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Our Valve Applications in Key Industries
Chemical Processing
Petrol Chemical
O.P.G & Nuclear
Pulp
Mining
Water & Sewage
Steam System
Boiling System
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Main Parameters
 | |
Ansi Std.Gate | Class 150 Lb-2500 Lb Size 1/2″~60″ |
Din Std.Gate | Dn50~dn1200, Pn16~pn420 |
Jis Std.Gate Valves | Dn15~dn800 10 K~40 K |
Bs Std.Gate Valves | Dn15~dn800, Pn16~pn420 |
Design & | Api600,api 6 D,asme B16.34,api603 Bs1414,din3352,bs1984 Etc. |
Face to Face Std. | Asme B16.10,api 6 A,,din3202,en558,bs2080,mss Sp-81,jis |
End Connection Std | Asme B16.5,asme B16.11,asme B1.20.1,asme B16.25,en1092-1, |
Test Standard | Api598,api 6 D,bs 6755,din3230,en12266 ,jis B2003 |
Operated Type | Handwheel, Bevel Gear , Pneumatic, Electric, Bare Stem with Iso 5210 Top |
Material | Carbon Steel: A216 Wcb, Wcc, Wc1, Astm A105 |
Gate Valve | Gate Valves Catalogue (5.4 Mb)din Gate Valves Catalogue(1.4 Mb) |
Special Gate Valves | Except for Common Gate Valves,we Also Produce Cryogenic Gate Valves, |
Gate Valve Design
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.
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.
Gate Valve Types
1. Based on Valve Stem designed
Rising Stem Gate Valve
Non rising stem gate valve
2. Based on gate configuration
Parallel Slide Gate Valve Design
Wedge Gate Valve Design
Gate Valve Configuration and Working Principle
Advantages of Gate Valve
Disadvantages of Gate Valves
Susceptibility to Erosion and Scratches
Large Size and Space Requirements
Exposed Stem Packing
Primary Applications of Gate Valves
Proper Installation and Use of Gate Valves
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.
Routine Maintenance of Gate Valves
- Use of Bypass Valve: Before operating a gate valve equipped with a bypass valve, open the bypass valve first. This helps balance the pressure difference between the inlet and outlet, making it easier to operate.
- Actuator Installation: Gate valves with an actuator should be installed following the guidelines in the product instruction manual. Proper installation ensures safe and efficient operation.
- Regular Lubrication: For valves that are used frequently, lubrication should be done at least once a month. This keeps the valve in good working condition and reduces wear over time.
Troubleshooting Gate Valve Operation Issues
Addressing Leakage at the Stem Port
Tighten Packing Bolts
Check for Foreign Material
Replace Damaged Stem Packing
Addressing Seat Leakage in Gate Valves
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Additional General Insights Here
Specs of Gate Valve
Sizes
Pressure Ratings
End Connections
Features of Gate Valve
Tight Sealing
One of the key features of Gate Valves is their ability to provide a tight seal. The gate mechanism allows for complete closure, preventing any leakage. This is crucial in applications where maintaining the integrity of the fluid flow is essential.
Full Bore Design
Gate Valves often have a full bore design, meaning the opening is as wide as the pipeline. This feature reduces pressure drops and allows for smooth flow of fluids. In other words, it is especially beneficial in applications where maintaining flow efficiency is important.
Easy Operation
Gate Valves are straightforward to operate, often requiring only a simple turn of a wheel or handle. This ease of use makes them a preferred choice in various industrial settings. Their design allows for full flow when open and minimal resistance when closed.
Benefits of Gate Valve
Efficient Flow Control
Gate Valves provide efficient flow control, allowing for precise regulation of fluid movement. Their design minimizes pressure drop and turbulence, ensuring smooth operation. This efficiency makes them ideal for applications where consistent fluid flow is necessary.
Cost-Effective
Gate Valves are a cost-effective solution for controlling fluid flow in pipelines. Their durability means they have a long service life, reducing maintenance and replacement costs. NTVAL Gate Valves offer an economical choice without compromising quality.
Versatility
Gate Valves are versatile and can be used in a wide range of applications, from water supply systems to oil and gas pipelines. Their ability to handle different types of fluids and withstand harsh conditions makes them suitable for various industries. This versatility means they can be employed in multiple projects, providing flexibility for different needs.
Applications of Gate Valve
Water Supply Systems
Oil and Gas Pipelines
Chemical Processing
Petrochemical Industry
3 Considerations When Buying Gate Valve
01
Operational Mechanism
Consider how the Gate Valve will be operated, whether manually, electrically, or pneumatically. Manual valves are simple and cost-effective for smaller systems. For larger or more complex systems, electric or pneumatic actuators provide automated control. For example, an oil refinery might use pneumatic actuators for quick and precise valve operations. This choice can greatly enhance efficiency and reduce manual labor in demanding environments.
02
Temperature Tolerance
03
Maintenance Requirements
Types of Gate Valve
Wedge Gate Valve
Bellow Gate Valve
Knife Gate Valve
Slide Gate Valve
Double Disc Gate Valve
Slab Gate Valve
OS&Y Gate Valve
Pressure Seal Gate Valve
Through Conduit Gate Valve
API 602 Gate Valve
Stainless Steel Gate Valve
Dive Deeper Into Our Resources
Looking for more diverse product options? Browse through our handpicked selections:
Specialty Gate Valves:
- Bellow Seal Gate Valve
- Knife Gate Valve
- Double Disc Gate Valve
- Pressure Seal Gate Valve
- Through Conduit Gate Valve
Standard Gate Valves:
For some insightful reads, we’ve curated a list of recommended articles just for you:
Gate Valve Fundamentals:
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