Trusted Knife Gate Valve Manufacturer
NTVAL provides durable Knife Gate Valves for tough industrial environments. Built for easy maintenance and reliable performance, they handle thick fluids and slurries without clogging. Trust NTVAL for efficient, dependable valve solutions.
Reliable Knife Gate Valve
The Knife Gate Valve is a powerful tool for managing the flow of dense liquids and slurries, often used in industries like mining and wastewater treatment. This valve works with a thin, sharp-edged blade that can slice through thick or gritty materials, opening and closing to control flow effectively. Its design helps prevent clogging and makes it ideal for applications where traditional valves might struggle.
With a straightforward structure and a compact body, this valve offers reliable, low-maintenance performance. Built to handle challenging materials, the Knife Gate Valve is a dependable choice for a wide range of industrial needs.
Control de calidad
The PMI test scans the knife gate valve’s metal to confirm it matches the required specifications for optimal performance.
Prueba PMI
In the sealing test, pressure is applied to check if the knife gate valve closes properly without allowing any leaks.
Prueba de estanquidad
The low emission test checks if the knife gate valve releases any gases or fluids during use to support safety and performance.
Prueba de bajas emisiones
The impact test subjects the knife gate valve to sudden forces, verifying its ability to withstand shocks and remain functional.
Prueba de impacto
Dimension inspection measures the knife gate valve to confirm it fits correctly and aligns with installation requirements for effective function.
Inspección dimensional
In the painting thickness test, inspectors measure the valve’s coating to verify it provides enough protection against rust and corrosion.
Prueba de espesor de pintura
The PT test checks for tiny surface cracks on the knife gate valve, detecting defects that could affect long-term durability.
PT
Material inspection verifies that the knife gate valve’s components meet quality standards, confirming it is made from appropriate materials.
Inspección de materiales
Aplicaciones de nuestras válvulas en sectores clave
Descubra cómo nuestras avanzadas soluciones de válvulas mejoran el control del flujo, ofreciendo mayor eficacia, seguridad y una estricta garantía de calidad.
A knife gate valve handles harsh chemicals effectively, providing a safe and dependable solution for controlling fluid flow in processing plants.
Procesado químico
In the petrochemical industry, the knife gate valve works well with high-pressure pipelines, helping to control liquids and gases effectively.
Gasolina Química
Knife gate valves perform well under extreme conditions in nuclear operations, providing secure flow control for critical systems like reactors.
O.P.G & Nuclear
The pulp industry uses knife gate valves to manage thick slurries, making them ideal for handling the flow of pulp and fiber.
Pulp
In the mining industry, knife gate valves excel at handling abrasive materials, allowing efficient movement of slurries and other tough substances.
Minería
Knife gate valves manage water and sewage flow, providing an excellent solution for handling large volumes in treatment plants and pipelines.
Agua y alcantarillado
Steam systems utilize knife gate valves for smooth, efficient flow control under high pressure, promoting safety and operational reliability.
Sistema de vapor
Boiling systems benefit from knife gate valves by maintaining heat and pressure balance, making them a reliable option for fluid control.
Sistema de ebullición
Obtenga una válvula más versátil
Knife Gate Valve Seal Materials
Stainless Steel Body Options
Knife gate valves with a stainless steel body are designed for durability and performance in various applications. The standard seal material for these valves is white EPDM, which can handle temperatures ranging from 250°F to 280°F. For higher temperature applications, white Viton seals are available, capable of withstanding temperatures between 230°F and 350°F.
Carbon Steel Body Options
For knife gate valves with a carbon steel body, the standard seal material is black EPDM, suitable for temperatures from 215°F to 280°F. If higher temperature resistance is required, black viton seals are an available option, offering durability in temperatures from 230°F to 350°F.
Optional Accessories for Knife Gate Valves
Choosing the right accessories can enhance the functionality and ease of use of knife gate valves. Below are the optional accessories available, designed to meet various operational needs and preferences:
Optional Accessories for Knife Gate Valves
Choosing the right accessories can enhance the functionality and ease of use of knife gate valves. Below are the optional accessories available, designed to meet various operational needs and preferences:
Actuadores
- Pneumatic: Uses air pressure to open and close the valve automatically.
- Electric: Powered by electricity, allowing remote control of the valve.
- Gear Operators: Provide manual control with less effort, ideal for larger valves.
- Chainwheels: Allows for operation in hard-to-reach places by using a chain mechanism.
- Floor Stands: Provides a stable base for operating the valve from the ground level.
Positioners
- Pneumatic: Adjusts the valve’s position using air pressure, offering precise control.
- Electro-pneumatic: Combines electrical signals with air pressure for even more accurate valve positioning.
Switches
- Limit Switches (Yoke Mounted): Detects the open or closed position of the valve and sends a signal.
- Proximity Switches (Yoke Mounted): Senses the position of the valve without physical contact and provides feedback.
One Piece Body: DN 50- DN 800
Parts List
| Pos | Part | Material(Name) |
| 1 | Hand wheel | φ200-φ315 Cast iron GG 25 |
| ≥φ400Cast iron (GG20) | ||
| 2 | Yugo | Stainless steel (SS2333-02/AISI304) |
| DN 900-DN 1200: | ||
| Caststeel (GS C25) | ||
| 2a | Rodamiento | Brass(SS5170-00) |
| 2b | Slide washer | POM |
| 2c | Rodamiento | Brass(Ss5170-00) |
| 3 | Vástago | DN 50 DN250; |
| Stainless steel (SS 2320-02) | ||
| ≥DN 300: | ||
| Stainless steel (SS2383-02) | ||
| 4 | Stem nut | Brass(CW603 N) |
| ≥DN 800:Brass (SS 5453) | ||
| 4a | Stem nut holder | Stainless steel (SS 2333-02) |
| 4b | Screw | Stainless steel (A2) |
| 4c | Lavadora | Stainless steel(A2) |
| 4d | Nut | Stainless steel (A2) |
| 5 | Tie rod | Stainless steel (SS2333-02) |
| 5a | washer | Stainless steel (A2) |
| 5b | Nut | Stainless steel (A2) |
| 6 | Puerta | Stainless steel |
Two Piece Body: DN 900-DN 1200
Parts List
| Pos | Part | Material(Name) |
| 7 | Beam | Aluminium(EN AW-6063-T6) |
| 8 | Gland(E-body) Gland (L-body) | Stainless steel (EN1.4408) Cast steel (GSC25) |
| 8a | Stud bolt | Stainless steel (A2)+zinc |
| 8b | Lavadora | Stainless steel (A2) |
| 8c | Nut | Stainless steel (A2)+zinc |
| 9 | Box packing | Grafito |
| 9a | Box bottom support | DN 500-DN 800 polyethylene |
| 10-a-b | Valve body | Cast steel(GS C25) |
| 11 | Body gasket | PTEE |
| 12 | Retainer ring | Stainless steel |
| 12a | Locking screw | Stainless steel (A2) |
| 13 | Seat* | EPDM |
| 14 | Guide strip | Polyethylene |
| 15 | Bushing | Oil-bronze |
| 16 | Gateguard,not for HW | Stainless steel (SS 2333-02) |
| 17 | Gate clevis | Stainless steel (SS 2346-02) |
| 18 | Cylinder | Stainless steel |
| 20 | Clevis pin | Stainlesssteel (SS 2346-02) |
| 21 | Splitpin | Stainless steel (SS 2343-02) |
| 25 | Piston rod | Stainless steel (SS 2383-02) |
| 28 | Locking nut | Stainless steel (SS 2346-02) |
One Piece Body: DN 50- DN 800
Two Piece Body: DN 900- DN 1200
| SIZE (DN) | A | B | C | D | E | F | G | H | J | K | L | W.T (kg) |
| Unidad:mm | ||||||||||||
| 50 | 52 | 41 | 91 | 80 | 200 | 56 | 360 | 475 | 116 | 620 | 230 | 7 |
| 65 | 64 | 41 | 107 | 80 | 200 | 65 | 380 | 495 | 130 | 650 | 250 | 7 |
| 80 | 70 | 51 | 124 | 80 | 200 | 88 | 405 | 545 | 135 | 690 | 275 | 8 |
| 100 | 103 | 51 | 154 | 80 | 200 | 102 | 453 | 593 | 155 | 765 | 323 | 10 |
| 125 | 128 | 56 | 179 | 80 | 250 | 116 | 495 | 685 | 178 | 830 | 365 | 13 |
| 150 | 153 | 60 | 204 | 80 | 250 | 130 | 550 | 740 | 205 | 910 | 420 | 15 |
| 200 | 202 | 60 | 267 | 145 | 315 | 160 | 694 | 1017 | 268 | 1115 | 555 | 31 |
| 250 | 250 | 69 | 320 | 145 | 315 | 192 | 779 | 1102 | 320 | 1250 | 640 | 40 |
| 300 | 302 | 78 | 374 | 145 | 315 | 230 | 879 | 1252 | 375 | 1400 | 740 | 55 |
| 350 | 332 | 78 | 419 | 175 | 400 | 240 | 993 | 1415 | 420 | 1550 | 820 | 90 |
| 400 | 380 | 89 | 479 | 175 | 400 | 245 | 1083 | 1555 | 490 | 1690 | 910 | 120 |
| 450 | 428 | 89 | 535 | 200 | 520 | 280 | 1180 | 1680 | 560 | 1820 | 990 | 180 |
| 500 | 470 | 114 | 580 | 250 | 520 | 313 | 1315 | 1865 | 625 | 2010 | 1127 | 245 |
| 600 | 560 | 114 | 680 | 260 | 635 | 370 | 1540 | 2355 | 740 | 2340 | 1352 | 340 |
| 700 | 665 | 118 | 800 | 310 | 635 | 390 | 1750 | 2513 | 865 | 2650 | 1565 | 460 |
| 750 | 710 | 118 | 860 | 310 | 635 | 490 | 1880 | 2900 | 930 | 2830 | 1635 | 700 |
| 800 | 760 | 118 | 900 | 310 | 635 | 490 | 1970 | 3030 | 985 | 2970 | 1780 | 540 |
| 900 | 855 | 118 | 1010 | 320 | 635 | 580 | 2220 | 3380 | 1160 | 3340 | 1985 | 900 |
| 1000 | 950 | 150 | 1110 | 320 | 635 | 640 | 2400 | 3670 | 1280 | 3630 | 2215 | 1500 |
| 1200 | 1200 | 150 | 1335 | 490 | – | 750 | – | – | 1500 | 4300 | 2860 | – |
Flange Drilling
EN 1092 PN 10
| TAMAÑO(DN) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| Unidad:mm | ||||||||||
| Outside flange diameter(mm) | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 395 | 445 | 505 |
| Bolt circle diameter(mm) | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 350 | 400 | 460 |
| Number of throughgoing bolts(O) | – | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 6 | |
| Number oftapped holes(●) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 10 |
| Bolt size | M16 | M16 | M16 | M16 | M16 | M20 | M20 | M20 | M20 | M20 |
| Size of throughgoing holes in flange | φ18 | φ18 | φ18 | φ18 | φ18 | φ22 | φ22 | φ22 | φ22 | φ22 |
| β° | 45 | 45 | 22.5 | 22.5 | 22.5 | 22.5 | 22.5 | 15 | 15 | 11.25 |
| Screwlengths¹) | 8²) | 8²) | 12 | 12 | 12 | 14 | 13 | 17 | 20 | 19 |
| TAMAÑO(DN) | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 |
| Unidad:mm | |||||||||
| Outside flange diameter(mm) | 565 | 615 | 670 | 780 | 895 | 1015 | 1115 | 1230 | 1455 |
| Bolt circle diameter(mm) | 515 | 565 | 620 | 725 | 840 | 950 | 1050 | 1160 | 1380 |
| Number of throughgoing bolts(O) | 6 | 6 | 6 | 6 | 10 | 10 | 12 | 12 | 10 |
| Number oftapped holes(●) | 10 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 22 |
| Bolt size | M24 | M24 | M24 | M27 | M27 | M30 | M30 | M33 | M36 |
| Size of throughgoing holes in flange | φ26 | φ26 | φ26 | φ30 | φ30 | φ33 | φ33 | φ36 | φ39 |
| β° | 11.25 | 9 | 9 | 9 | 7.5 | 7.5 | 6.43 | 6.43 | 5.63 |
| Screwlengths¹) | 22 | 22 | 27 | 27 | 25 | 27 | 27 | 30 | 32 |
EN 1092 PN 16
| TAMAÑO(DN) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| Unidad:mm | ||||||||||
| Outside flange diameter(mm) | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 405 | 460 | 520 |
| Bolt circle diameter(mm) | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 | 470 |
| Number of throughgoing bolts(O) | – | – | 4 | 4 | 4 | 4 | 6 | 6 | 6 | 6 |
| Number oftapped holes(●) | 4 | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 6 | 10 |
| Bolt size | M16 | M16 | M16 | M16 | M16 | M20 | M20 | M24 | M24 | M24 |
| Size of throughgoing holes in flange | φ18 | φ18 | φ18 | φ18 | φ18 | φ22 | φ22 | φ26 | φ26 | φ26 |
| β° | 45 | 45 | 22.5 | 22.5 | 22.5 | 22.5 | 15 | 15 | 15 | 11.25 |
| Screwlengths¹) | 8²) | 8²) | 12 | 12 | 12 | 14 | 13 | 17 | 20 | 19 |
| TAMAÑO(DN) | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 |
| Unidad:mm | |||||||||
| Outside flange diameter(mm) | 580 | 640 | 715 | 840 | 910 | 1025 | 1125 | 1255 | 1485 |
| Bolt circle diameter(mm) | 525 | 585 | 650 | 770 | 840 | 950 | 1050 | 1170 | 1390 |
| Number of throughgoing bolts(O) | 6 | 6 | 6 | 6 | 10 | 10 | 6 | 12 | 10 |
| Number oftapped holes(●) | 10 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 22 |
| Bolt size | M27 | M27 | M30 | M33 | M33 | M36 | M36 | M39 | M45 |
| Size of throughgoing holes in flange | φ30 | φ30 | φ33 | φ36 | φ36 | φ39 | φ39 | φ42 | φ48 |
| β° | 11.25 | 9 | 9 | 9 | 7.5 | 7.5 | 6.43 | 6.43 | 5.63 |
| Screwlengths¹) | 22 | 22 | 27 | 27 | 25 | 27 | 27 | 30 | 32 |
Tips for Valve Installation
When installing valves, paying attention to specific details can help create a secure and efficient setup. Below are the key points to consider:
- Include Flange and Washer Thickness: Make sure to account for the thickness of the flanges and washers when adding the valves. This helps maintain proper alignment and fit.
- Screw Size on Seat Side: The screws on the seat side should be 3mm larger to provide a more stable attachment, improving the valve’s overall stability.
- Hole Types:
- O through-going holes: These holes allow screws or bolts to pass completely through the material.
- Tapped holes: These are pre-threaded holes designed to receive screws or bolts directly, without needing a nut on the other side.
JIS B 2238 10K
| TAMAÑO(DN) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| Unidad:mm | ||||||||||
| Outside flange diameter(mm) | 155 | 175 | 185 | 210 | 250 | 280 | 330 | 400 | 445 | 490 |
| Bolt circle diameter(mm) | 120 | 140 | 150 | 175 | 210 | 240 | 290 | 355 | 400 | 445 |
| Number of throughgoing bolts(O) | – | – | 4 | 4 | 4 | 4 | 6 | 6 | 8 | 6 |
| Number oftapped holes(●) | 4 | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 8 | 10 |
| Bolt size | M16 | M16 | M16 | M16 | M20 | M20 | M20 | M22 | M22 | M22 |
| Size of throughgoing holes in flange | φ19 | φ19 | φ19 | φ19 | φ23 | φ23 | φ23 | φ25 | φ25 | φ25 |
| β° | 45 | 45 | 22.5 | 22.5 | 22.5 | 22.5 | 15 | 15 | 15 | 11.25 |
| Screwlengths¹) | 8²) | 8²) | 12 | 12 | 12 | 14 | 13 | 17 | 20 | 19 |
| TAMAÑO(DN) | 400 | 450 | 500 | 600 | 700 | 750 | 800 | 900 | 1000 |
| Unidad:mm | |||||||||
| Outside flange diameter(mm) | 550 | 620 | 675 | 795 | 905 | 970 | 1020 | 1120 | 1235 |
| Bolt circle diameter(mm) | 510 | 565 | 620 | 730 | 840 | 900 | 950 | 1050 | 1160 |
| Number of throughgoing bolts(O) | 6 | 6 | 6 | 6 | 10 | 10 | 10 | 12 | 12 |
| Number oftapped holes(●) | 10 | 14 | 14 | 18 | 14 | 14 | 18 | 16 | 16 |
| Bolt size | M24 | M24 | M24 | M30 | M30 | M30 | M30 | M30 | M36 |
| Size of throughgoing holes in flange | φ27 | φ27 | φ27 | φ33 | φ33 | φ33 | φ33 | φ33 | φ39 |
| β° | 11.25 | 9 | 9 | 7.5 | 7.5 | 7.5 | 6.43 | 6.43 | 6.43 |
| Screwlengths¹) | 22 | 22 | 27 | 27 | 25 | 25 | 27 | 27 | 30 |
ANSI B16.5 CLASS 150
| TAMAÑO(DN) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| Unidad:mm | ||||||||||
| Outside flange diameter(mm) | 152.4 | 177.8 | 190.5 | 228.6 | 254 | 297.4 | 342.9 | 406.4 | 482.6 | 533 |
| Bolt circle diameter(mm) | 120.7 | 139.7 | 152.4 | 190.5 | 215.9 | 241.3 | 298.5 | 362 | 431.8 | 476.3 |
| Number of throughgoing bolts(O) | – | – | 2 | 4 | 4 | 4 | 4 | 6 | 6 | 6 |
| Number oftapped holes(●) | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 6 | 6 | 6 |
| Bolt size | 5/8-11 | 5/8-11 | 5/8-11 | 5/8-11 | 3/4-10 | 3/4-10 | 3/4-10 | 7/8-9 | 7/8-9 | 1-8 |
| Size of throughgoing holes in flange | φ18 | φ18 | φ18 | φ18 | φ22 | φ22 | φ22 | φ26 | φ26 | φ30 |
| β° | 45 | 45 | 22.5 | 22.5 | 22.5 | 22.5 | 22.5 | 15 | 15 | 15 |
| Screwlengths¹) | 8²) | 8²) | 12 | 12 | 12 | 14 | 13 | 17 | 20 | 19 |
| TAMAÑO(DN) | 400 | 450 | 500 | 600 | 700 | 750 | 800 | 900 | 1000 | 1200 |
| Unidad:mm | ||||||||||
| Outside flange diameter(mm) | 597 | 635 | 699 | 813 | 927.1 | 984.3 | 1060 | 1168.4 | 1289.1 | 1511 |
| Bolt circle diameter(mm) | 539.8 | 577.9 | 635 | 749.3 | 863.6 | 914.4 | 977.9 | 1085.9 | 1200.1 | 1422.4 |
| Number of throughgoing bolts(O) | 6 | 6 | 6 | 6 | 10 | 10 | 10 | 12 | 18 | 28 |
| Number oftapped holes(●) | 10 | 10 | 14 | 14 | 18 | 18 | 18 | 20 | 18 | 16 |
| Bolt size | 1-8 | 1-1/8-7 | 1-1/8-7 | 1-1/4-7 | 1-1/4-7 | 1-1/4-7 | 1-1/2-6 | 1-1/2-6 | 1-1/2-6 | 1-1/2-6 |
| Size of throughgoing holes in flange | φ30 | φ33 | φ33 | φ36 | φ36 | φ36 | φ42 | φ42 | φ42 | φ42 |
| β° | 11.25 | 11.25 | 9 | 9 | 6.43 | 6.43 | 6.43 | 5.63 | 5 | 4.01 |
| Screwlengths¹) | 22 | 22 | 27 | 27 | 25 | 25 | 27 | 27 | 33 | 32 |
Key Installation Notes for Valves
When setting up valves, it’s important to consider specific factors to achieve a reliable and efficient installation. Below are the main points to keep in mind:
- Account for Flange and Washer Thickness: Be sure to include the thickness of flanges and washers when installing the valves to maintain proper alignment and fit.
- Increase Screw Size on Seat Side: Use screws that are 3mm larger on the seat side to enhance the stability and security of the valve attachment.
- Hole Types:
- O through-going holes: These holes allow screws or bolts to pass completely through, making them suitable for situations where a nut can be used on the other side.
- Tapped holes: These are pre-threaded holes designed to securely hold screws or bolts without the need for a nut.
Main Parts
Materiales
| Part No | Designación | Materiales | Notes | |
1 | Cuerpo | EN-GJL-250 | JL 1040 1.0044/ S275JR | Single piece upto DN 500 two piece from DN 600 |
| 2 | Yugo | Acero | 1.4305/AISI303 | |
| 3 | Vástago | Stainless steel. | 1.4571/AISI316Ti | Non-rising |
| 4 | Valve disc | Stainless steel. | 1.4301/AISI304 | DN 50-400 |
| Stainless steel. | DN 450 and largeR | |||
| 5 | U-shaped rod seal | Steel cored EPDM | ||
| 6.1 | O-ring | EPDM | Integrated flange seal | |
| 6.2 | O-ring | EPDM | ||
| 7 | Gland flange | EN-GJS-400-15 | JS 1030 | |
| 8 | Gland flange | PTFE Impregnated syntheticfibres | ||
| 9 | Stem nut | Brass | ||
| 10 | Guiding bush | Brass | ||
| 11 | Anti-frictondisc | Nylon | ||
| 12 | Spring-type straight pin | Acero | DIN 7346 | |
| 13 | Hex. Head bolt | A2 | ||
| 14 | Bolts | A2 | ||
| 15 | Hexagon nut | A2 | ||
| 16 | Volante | Acero | DN 50-300 | |
| EN-GJL-250 | JL1040 | From DN 350 |
Test and Operating Pressures
| Nominal pressure | Nominal diameter | Shell/body pressure test With water | Leak test With water | Permissible operating pressures |
| PN | DN | |||
| 10 | 50-250 | 15 | 11 | 10 |
| 6 | 300-400 | 9 | 6.6 | 6 |
| 5 | 450 | 7.5 | 5.5 | 5 |
| 4 | 500-600 | 6 | 4.4 | 4 |
| 2 | 700-1200 | 3 | 2.2 | 2 |
Key Standards and Specifications for Valve Testing
When it comes to valve testing, specific standards and conditions must be met to ensure reliable performance. Below are the essential details:
- DIN EN 12266-1 Compliance: This standard outlines the general requirements for valve testing to guarantee that the valves perform effectively.
- Leakage Rates Based on Valve Size: For valves sized DN 50-600, the acceptable leakage rate is A. For larger valves, sized DN 700-1200, the acceptable leakage rate is B.
- Fluid Temperature: The testing is conducted with fluid temperatures up to 120°C.
Variantes
Chain Wheel
(non-rising stem)
Quick-Action Lever
Gearbox
(non-rising stem)
Pneumatic Actuator
(double-acting)
Electric Actuator
(rising-stem)
Dimensiones
Dimensiones
Face-to-Face Length: The face-to-face length of the valve, which is the distance between the two ends, follows the standard EN558-1/20 (previously known as DIN3202K1).
Applicable Sizes: This standard applies to valves up to DN 500. For valves starting from DN 600, please refer to the specific table for exact measurements.
Flange
Standard Mating Dimensions: The flanges are designed to match the standard dimensions according to EN1092-2 PN10, ensuring a proper fit with other components.
Additional Flange Connections: If you need different flange connections, additional options are available upon request.
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Más información general
Specs of Knife Gate Valve
Tamaño y dimensiones
Knife Gate Valves used in industrial settings typically range in size from 2 inches to 48 inches in diameter. The valve body is generally flat and rectangular, optimizing space in large pipeline systems. The point is, these dimensions allow the valves to handle high volumes of thick fluids and slurries efficiently.
Material and Construction
The valves are made from strong materials like stainless steel, cast iron, or ductile iron. These materials are chosen for their durability and resistance to corrosion. The construction includes a sharp-edged blade that can cut through thick fluids and solids, making it perfect for demanding applications.
Características de diseño
NTVAL’s Knife gate valves include advanced design features for improved performance. They have a precision-machined gate and seat, which provide a tight seal to prevent leaks. The valves are also designed for easy operation and maintenance, offering long-lasting service and minimal downtime.
Feature of Knife Gate Valve
Construcción duradera
Knife Gate Valves are built with strong materials like stainless steel, cast iron, or ductile iron. This durable construction allows the valve to withstand harsh conditions and heavy usage. The design makes it a reliable choice for industrial applications.
Sharp-Edged Blade
One of the standout features is the sharp-edged blade. This blade is designed to cut through thick fluids and solids, preventing clogs and maintaining smooth flow. The sharp edge sets it apart from other valves that might struggle with similar tasks.
Precision-Machined Gate and Seat
The precision-machined gate and seat provide a tight seal, preventing leaks. This feature is crucial for maintaining efficiency and safety in large systems. NTVAL's Knife Gate Valves are known for this high level of precision, making them a top choice in the market.
Benefits of Knife Gate Valve
Improved Flow Efficiency
By using a Knife Gate Valve, users can experience improved flow efficiency. The valve's design reduces the chances of clogging, allowing fluids and solids to pass through smoothly. This efficiency can lead to better overall system performance.
Reducción de los costes de mantenimiento
The durable construction and reliable sealing mean that these valves require less frequent maintenance. This results in reduced maintenance costs over time. Users can benefit from less downtime and lower repair expenses.
Enhanced Safety and Reliability
The tight seal provided by the precision-machined gate and seat enhances safety by preventing leaks. Reliable operation is crucial in industrial settings, and these valves offer consistent performance. Think about it, having dependable valves means fewer disruptions and a safer working environment, which are essential for maintaining productivity and protecting your investments.
Applications of Knife Gate Valve
Industrial Processing
Knife Gate Valves are widely used in industrial processing for handling slurry, pulp, and other thick fluids. These valves can cut through solids, making them ideal for processes that involve heavy mixtures. They help maintain a smooth flow in pipelines, reducing the risk of blockages. NTVAL Knife Gate Valves are especially valued for their reliability in these demanding applications.
Petrochemical
Knife Gate Valves are used to control the flow of thick fluids like crude oil, slurries, and other chemicals. These valves are built to handle viscous or solid-laden fluids, making them perfect for cutting through heavy mixtures in pipelines. Their durability and precision are valuable in maintaining smooth operations and preventing blockages in petrochemical processes.
Mining Operations
Knife Gate Valves are crucial in mining operations where they handle abrasive materials like ore and slurry. Their sturdy construction and sharp blade make them suitable for the tough conditions in mining. You know how important it is to keep the flow of materials controlled and uninterrupted, and these valves are designed to do just that, providing efficiency and reliability in operations.
Wastewater Treatment
In wastewater treatment plants, Knife Gate Valves are essential for controlling the flow of sewage and sludge. For example, they can easily cut through thick, solid waste in a sludge pipeline, ensuring smooth flow. Their ability to handle such tough materials makes them perfect for this environment. They help manage the flow and prevent clogs in the system, contributing to the overall efficiency and safety of wastewater management.
3 Considerations When Buying Knife Gate Valve
01
Temperature Compatibility
The operating temperature of the fluid is a critical factor. Some materials and designs are better suited for extreme temperatures. For example, a valve used in high-temperature steam applications (up to 450°F or 232°C) must be able to withstand the heat without degrading. Verify that the valve’s materials and construction can handle your system’s temperature range.
02
Bolted Bonnet and Accessible Packing Gland
Consider the ease of maintenance for the valve. Valves that are difficult to disassemble and clean can lead to increased downtime and higher operational costs. A valve with a bolted bonnet and accessible packing gland will save significant time during maintenance. NTVAL valves feature these design elements, offering easy access and simple disassembly to streamline maintenance tasks.
03
ISO 9001 Certification
This certification indicates that the manufacturer adheres to international quality management standards. A valve from an ISO 9001 certified company follows strict quality checks and consistent production processes. In other words, choosing valves from such manufacturers provides high reliability and performance in your applications.
FAQS About Knife Gate Valve
NTVAL offers technical assistance to troubleshoot any issues, guidance on valve operation, and solutions to problems encountered. If needed, we can send replacement parts or a new valve. Customers can benefit from repairs or replacements within the warranty period.
Yes, each Knife Gate Valve we supply comes with a 3.1 certificate at no additional cost. We will send the certificate for your approval before delivery.
We don’t require a minimum order, so you can order as few as one Knife Gate Valve if needed.
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