{"id":9865,"date":"2024-09-12T08:18:57","date_gmt":"2024-09-12T08:18:57","guid":{"rendered":"https:\/\/ntval.com\/?page_id=9865"},"modified":"2025-06-07T12:03:26","modified_gmt":"2025-06-07T12:03:26","slug":"gate-valve-manufacturer","status":"publish","type":"page","link":"https:\/\/ntval.com\/fr\/gate-valve-manufacturer\/","title":{"rendered":"Vanne \u00e0 guillotine"},"content":{"rendered":"\t\t
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Trusted Gate Valve Manufacturer<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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NTVAL provides durable Gate Valves for industrial use, offering excellent sealing and reliable operation in tough environments. ISO9001 and API6D certified, our valves ensure long-lasting performance and cost efficiency.<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\"ntval-partner-logo
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<\/div><\/figure><\/div>\t\t\t<\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Reliable Gate Valve<\/h2>\t\t\t\t<\/div>\n\t\t
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NTVAL offers high-quality Gate Valves designed for industrial use. Our Gate Valves are known for their durability, excellent sealing performance, and reliable operation in demanding environments. With certifications from ISO9001 and API6D, we guarantee top-tier products. No wonder our valves provide long-lasting performance and cost efficiency.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Quality Control<\/h2>\t\t\t\t<\/div>\n\t\t
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The PMI test verifies that the gate valve\u2019s material matches the specified metals, making sure it is appropriate for its intended use.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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PMI Test<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t
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The sealing test checks the gate valve for leaks by confirming it closes tightly and securely, keeping fluids contained without escaping.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Sealing Test\u200b<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The low emission test examines the gate valve’s ability to limit harmful gas releases, helping to maintain a safer environment for workers.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Low Emission Test\u200b<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The impact test evaluates whether the gate valve can withstand force or shock without breaking, proving it can function in tough conditions.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Impact Test\u200b<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Dimension inspection measures the gate valve\u2019s components to verify they meet design specifications, confirming proper fit and function within the system.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Dimension Inspection\u200b<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The painting thickness test determines how thick the valve’s paint coating is, helping verify its ability to protect against rust and corrosion.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Painting Thickness Test\u200b<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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PT, or penetrant testing, detects tiny surface cracks on the gate valve by applying a special liquid that highlights any hidden defects.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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PT<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Material inspection checks that the raw materials used in the gate valve meet the necessary standards for strength and durability.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Material Inspection\u200b<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Our Valve Applications in Key Industries <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t
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Gate valves are ideal for the chemical processing industry because they handle strong chemicals safely, controlling the flow without leaking.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Chemical Processing\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate valves work well in the petrol chemical industry by regulating the flow of oil and gas, preventing spills and maintaining safety.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Petrol Chemical\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate valves provide reliable control in O.P.G and nuclear industries, managing the flow of critical fluids under extreme pressure and conditions.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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O.P.G & Nuclear\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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In the pulp industry, gate valves control the movement of thick liquids, helping maintain smooth operations without clogging or interruptions.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Pulp\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate valves are essential in water and sewage systems, allowing workers to control water flow for treatment and distribution with ease and reliability.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Mining<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate valves are essential in water and sewage systems, allowing workers to control water flow for treatment and distribution with ease and reliability.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Water & Sewage\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate valves in steam systems control high-temperature steam, making it easier to manage pressure and maintain safe operations across facilities.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Steam System\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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In boiling systems, gate valves regulate water flow and steam, helping boilers function efficiently while preventing dangerous overflows or malfunctions.<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Boiling System\n<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Get More Versatile Valve<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"industrial\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Gate Valve<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\n\t\t\t\t

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Ball Valve<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"industrial\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Globe Valve<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"industrial\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Check Valve<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"industrial\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Plug Valve<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"industrial\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
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Butterfly Valve<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Main Parameters<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\u00a0<\/td><\/tr>

Ansi Std.Gate
Valves<\/p><\/td>

Class 150 Lb-2500 Lb Size 1\/2″~60″<\/p><\/td><\/tr>

Din Std.Gate
Valves<\/p><\/td>

Dn50~dn1200, Pn16~pn420<\/p><\/td><\/tr>

Jis Std.Gate Valves<\/p><\/td>

Dn15~dn800 10 K~40 K<\/p><\/td><\/tr>

Bs Std.Gate Valves<\/p><\/td>

Dn15~dn800, Pn16~pn420<\/p><\/td><\/tr>

Design &
Manufacture Std.<\/p><\/td>

Api600,api 6 D,asme B16.34,api603 Bs1414,din3352,bs1984 Etc.<\/p><\/td><\/tr>

Face to Face Std.<\/p><\/td>

Asme B16.10,api 6 A,,din3202,en558,bs2080,mss Sp-81,jis
B2002,nfe29-305,iso5752 Etc.<\/p><\/td><\/tr>

End Connection Std<\/p><\/td>

Asme B16.5,asme B16.11,asme B1.20.1,asme B16.25,en1092-1,
Din2501,din2543-2550 ,jisb2212-Jisb2214,jis2220 (connection Type:
Rf,ff,rtj,bw,sw,npt,)<\/p><\/td><\/tr>

Test Standard<\/p><\/td>

Api598,api 6 D,bs 6755,din3230,en12266 ,jis B2003<\/p><\/td><\/tr>

Operated Type<\/p><\/td>

Handwheel, Bevel Gear , Pneumatic, Electric, Bare Stem with Iso 5210 Top
Mounting Pad<\/p><\/td><\/tr>

Material<\/p><\/td>

Carbon Steel: A216 Wcb, Wcc, Wc1, Astm A105
Stainless Steel: A351 F8 (f304), Cf8 M (f316), Cf3 (f304 L), Cf3 M (f316 L), Cf8 C (f347), F321, F321 H, Ck20
Alloy Steel: Monel 400, Monel K500, Alloy 20, 904 L, Cn7 M, Inconel, Hastelloy B & C, Titanium Alloy
Duplex Stainless Steel: A351 Cn7 M (b473), Cd4 M Cu (f50), Ck3 M Cu N (f44), Cg8 M, A890-1 A, 4 A, 5 A, 6 A, A182 F44, F50, F51, F53, F310
Low Temperature Steel: A352 Lcb, Lcc, Lca, Lc3, A350 Lf2, Lf3
High Temperature Steel: A217 Wc6, Wc9, Wc5, Wc11, C5, C12, C12 A, A182 F22, F11, F5, F9
Bronze, Nickel Aluminum Bronze (nab), Gunmetal: B148 C95500, C95800, C95400, C83600, C92200, Astm B62, B61, B150 C63200
Din Material: Gs-C25\/1.0619, 1.4408, 1.4308, C22.8<\/p><\/td><\/tr>

Gate Valve
Catalogue<\/p><\/td>

Gate Valves Catalogue (5.4 Mb)din Gate Valves Catalogue(1.4 Mb)<\/p><\/td><\/tr>

Special Gate Valves<\/p><\/td>

Except for Common Gate Valves,we Also Produce Cryogenic Gate Valves,
Bellow Sealed Gatevalve,jacketed Gate Valves,through Conduit Gate
Valve,parallel Slide Gate Valve,knife Gate Valve,high-Temperature Gate
Valve,high pressure valves etc.<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Gate Valve Design<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tGate valve Bonnet Design<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The bonnet of a gate valve ensures a leakproof seal for the valve body. Screw-in bonnets offer a simple, durable seal, union bonnets are ideal for easy inspection and cleaning, and bolted bonnets are used in larger, high-pressure valves. A pressure seal bonnet, designed for high-pressure applications above 15 MPa (2250 psi), tightens the seal as internal pressure increases, preventing leaks at the body-bonnet joint.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\tGate Valve Disc Design<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The disc in a gate valve can be designed as either a solid or flexible wedge, or as a parallel disc. A solid wedge provides a strong and simple closure, while a flexible wedge allows for slight movement to accommodate pressure changes, reducing the risk of jamming. The parallel disc design uses two discs that close against each other, offering a tight seal and smoother operation in certain conditions.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tStem Design in Gate Valves<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves come with either a rising or non-rising stem. Rising stems show the valve’s position visually, while non-rising stems are used in areas with limited vertical space or underground installations. NTVAL valves feature a one-piece wrought stem, not welded, with a “T” type connection to the disc, providing a strong and reliable bond that meets API 591 strength standards.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tSeat Design in Gate Valves<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In carbon steel gate valves, the seat is typically made of forged steel, with the sealing surface welded with a customer-specified hard alloy. For valves NPS 10 or smaller, a renewable threaded-in seat ring is standard, with the option for a welded-on seat if needed. In stainless steel gate valves, the seat is either integral or welded with a hard alloy, with the choice of a threaded-in or welded-on seat also available.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tBack Seat Design in Gate Valves<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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All NTVAL gate valves feature a back seat design. Typically, carbon steel gate valves have a renewable back seat, while in stainless steel valves, the back seat is machined directly into the bonnet or after welding. When the gate valve is fully open, the back seat provides a reliable seal, though API 600 guidelines advise against adding or changing the packing under line pressure.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tBody-Bonnet Gasket Design in Gate Valves<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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For Class 150 gate valves, a combination of carbon steel or stainless steel with flexible graphite is used for the gasket. In Class 300 and Class 600 gate valves, a stainless steel and flexible graphite spiral wound gasket is standard, with the option for a ring-type joint gasket in Class 600 valves. For Class 900 valves, a ring-type joint gasket is used, while pressurized seal designs are applied to Class 1500 to Class 2500 valves.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tGate Valve Packing Seal Design<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Molded flexible graphite is commonly used as the packing material in gate valves, with PTFE or a combination of materials available if needed. The internal surface of the stuffing box, where it contacts the packing, is finely finished for smoothness, while the stem surface is carefully machined and treated for a high level of finish and compactness. This attention to detail helps create a secure and tight seal in the stem area.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tStem Nut Features in Gate Valves<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The stem nut is typically made from copper alloy or ASTM A439 D2. For larger gate valves, such as NPS 10 for Class 150 or NPS 8 for Class 300, a rolling bearing is added beneath the stem nut to reduce the force needed to open and close the valve. This design helps make operating the valve easier, especially in larger sizes, ensuring smoother and more efficient operation under higher pressure conditions.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\tGate Valve Operation Methods<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves are typically operated using a hand wheel or gearbox, with the option for a chain wheel if needed. For valves that require actuation, the top flange dimensions are made according to ISO 5211 standards. These options provide flexibility in how the valve can be controlled, depending on the application.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tBelleville Spring-Loaded Packing Option<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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If needed, Belleville spring-loaded packing can be added to improve the durability and reliability of the packing seal. This feature helps maintain a tight seal over time, providing consistent valve performance. It’s an option that can be used when extra reliability is important.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate Valve Types<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves come in various designs, each suited to specific applications and operational needs. The type of gate valve often depends on how the valve stem is designed, which influences how the valve operates and its ease of use. Understanding these different types helps in selecting the right valve for a given application.<\/div>
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1. Based on Valve Stem designed<\/h3>
Gate valves can be categorized based on how their valve stem is designed, which directly impacts their operation and functionality. The stem design determines how the valve opens and closes, as well as how the valve’s position is indicated. Understanding these differences is crucial for selecting the right valve for specific operational needs. Below are the different types of gate valves based on their stem design:<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Rising Stem Gate Valve<\/h4>
In this design, the stem nut is located on the valve bonnet or bracket. When the valve is operated, the stem rotates, lifting the gate to open or lowering it to close. This design is popular because it allows for easy lubrication of the stem and provides a clear indication of whether the valve is open or closed.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Non rising stem gate valve<\/h4>
In a non-rising stem gate valve, the stem nut is located within the valve body and comes into direct contact with the fluid. The benefit of this design is that the valve\u2019s height remains constant, making it ideal for situations where space is limited or for larger diameter valves. However, the downside is that the stem cannot be lubricated, and its direct exposure to the fluid can lead to erosion and damage over time.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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2. Based on gate configuration<\/h3>
Gate valves can also be classified according to their gate configuration, which influences how they seal and operate. The configuration of the gate, whether single or double, affects the valve\u2019s ability to manage flow and maintain a secure seal. Below are the different types of gate valves based on their gate configuration.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Parallel Slide Gate Valve Design<\/h4>
A parallel slide gate valve comes in two variations: single gate and double gate. In this design, the sealing surfaces are parallel to the vertical centerline of the valve, with the double gate version featuring two parallel sealing surfaces. This design helps in maintaining a consistent seal when the valve is closed.<\/div>
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Wedge Gate Valve Design<\/h4>
Wedge gate valves come in three types: single gate, double gate, and flexible gate. In these valves, the sealing surfaces are angled relative to the vertical centerline, creating a wedge shape. This design helps in achieving a tight seal when the valve is closed.<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate Valve Configuration and Working Principle<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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A gate valve uses a gate to open and close, moving vertically against the flow of fluid. This valve is designed only for shutting off flow and is not suitable for adjusting or throttling. Gate valves can have either self-sealing or forced sealing mechanisms; in self-sealing, the fluid pressure presses the gate against the valve seat, while in forced sealing, external force is applied to create a tight seal.<\/div>
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When the valve is fully opened, the gate lifts to a height equal to the valve diameter, allowing unimpeded flow. However, the gate’s exact position cannot be monitored during operation. To ensure the valve is fully open, it\u2019s common to turn the handwheel to its maximum and then back off slightly. This helps account for possible handwheel locking due to temperature changes and provides a reliable indication of the fully open position.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Advantages of Gate Valve<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Gate valves are widely used in various industries due to their efficient and straightforward design. They offer several key benefits that make them a preferred choice for controlling fluid flow in pipelines. Below are the primary advantages that contribute to the reliability and versatility of gate valves in different applications:<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tLow Flow Resistance<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves are designed with a straight-through path, allowing fluid to move directly without many obstacles. This design minimizes resistance, making the flow smoother and more efficient. It\u2019s ideal for applications where maintaining high flow rates is important.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tEffortless Operation<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The gate in these valves moves perpendicular to the fluid flow, which makes opening and closing the valve easy. This simple movement reduces the effort needed during operation. It\u2019s especially useful in systems where frequent valve adjustments are necessary.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tFlexible Installation<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves are symmetrical, allowing fluid to flow in either direction through the valve. This feature simplifies the installation process, making it easier to adapt to various piping layouts. It\u2019s a practical choice for systems requiring flexibility in flow direction.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tCompact Design<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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With a short end-to-end dimension, gate valves occupy less space between connection points. This compact size makes them suitable for installations where space is limited. The design also allows for easier integration into existing systems.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tSimple and Versatile<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The straightforward design of gate valves makes them easy to manufacture and apply in many settings. Their versatility allows them to be used across different industries. This makes gate valves a common choice for various fluid control applications.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Disadvantages of Gate Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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While gate valves have many benefits, they also have some drawbacks that should be considered. Below are the key disadvantages of gate valves:<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Susceptibility to Erosion and Scratches<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves are prone to erosion and scratches on their sealing surfaces, which can complicate maintenance. These imperfections can lead to leaks and reduced sealing efficiency. Over time, the wear and tear can make the<\/div>
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Large Size and Space Requirements<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves are large and require significant space for operation. This makes them less suitable for areas with limited space. Additionally, the time needed to fully open or close the valve is longer compared to other valve types.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t
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Exposed Stem Packing<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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The stem packing in gate valves is often exposed, making it more vulnerable to wear. This exposure can lead to leaks over time, reducing the valve’s effectiveness. Regular maintenance is required to address these issues and ensure proper function.<\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t
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Primary Applications of Gate Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Gate valves are widely used in various industries, particularly in oil and gas pipelines where they help control the flow of crude oil and natural gas. They are also essential in managing pipelines and storage facilities for refined oil products. Additionally, gate valves play a crucial role in oil and gas mining wellhead facilities, ensuring smooth operation and safety.<\/div>
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In urban infrastructure, gate valves are key components in intercity gas transmission pipelines, helping to regulate the flow of natural gas. They are also commonly used in tap water and sewage treatment projects, where they control the flow of water and waste efficiently. These applications highlight the versatility and importance of gate valves in essential services.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Proper Installation and Use of Gate Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Proper installation and use of gate valves are essential to their performance and longevity. By following specific steps during installation and routine maintenance, you can help prevent common issues like leaks or operational failures. Here are the key guidelines to follow for installing and maintaining gate valves effectively:<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tInspect Valve Cavity and Sealing Surfaces<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Before installing the gate valve, check that the valve cavity and sealing surfaces are clean and free from dirt or sand. This step is important for achieving a proper seal and preventing future problems. A clean surface helps maintain the valve’s effectiveness over time.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tEvenly Tighten Connection Bolts<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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All bolts at the connection points should be tightened evenly to maintain a secure seal. Uneven tightening can lead to leaks and uneven pressure distribution across the valve. Properly tightened bolts help the valve operate smoothly and efficiently.\u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tAdjust Packing for Optimal Operation<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The packing should be adjusted to create a good seal while allowing the valve to operate smoothly. Proper adjustment is essential for maintaining the valve\u2019s performance. This also helps to avoid unnecessary wear on the valve components.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tVerify Valve Type and Specifications<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Before installation, confirm that the valve type, connection size, and flow direction match your specific application. Making sure the valve is compatible with the system ensures proper function. This step is crucial to avoid operational issues later on.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tAllow Adequate Space for Operation<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Ensure there is enough space around the valve for proper installation, maintenance, and repairs. Sufficient room allows easy access for adjustments and helps prevent accidental damage during operation.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\tFollow Wiring Instructions<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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When wiring the drive unit, carefully follow the circuit diagram provided by the manufacturer. Correct wiring is important for the safe and efficient operation of the valve. Proper installation also minimizes the risk of electrical issues and ensures long-term reliability.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\tRegular Maintenance and Protection<\/span>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Perform regular maintenance on the gate valve and avoid hard impacts, especially on the sealing surfaces. Consistent care helps prevent damage and extends the valve’s lifespan. Regular checks also keep the valve in good working order.<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Routine Maintenance of Gate Valves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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