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Help CenterPlunger Valve, Alloy Steel, Natural Gas High Pressure, 10" Size, 2500LB, Fire Safe Design
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium 10-inch, 2500LB Alloy Steel Plunger Valve designed specifically for high-pressure natural gas applications. As a dedicated manufacturer established in 2016, we combine engineering excellence with rigorous quality control to deliver valves that ensure safety, reliability, and long service life. This plunger valve features a fire-safe design and is built to withstand the demanding conditions of natural gas transmission and distribution systems. With ISO9001 certification and an annual export value exceeding US$1 million, our products are trusted by clients across North America, Europe, Asia, and more.
Our plunger valve utilizes a unique reciprocating plunger mechanism that provides tight shut-off and smooth throttling capabilities. The all-alloy-steel construction offers superior corrosion resistance and mechanical strength, making it ideal for high-pressure gas environments. The 2500LB pressure class ensures compatibility with the most stringent pipeline requirements, while the 10-inch size delivers optimal flow capacity for large-scale industrial applications.
Key Features & Technical Specifications
- Fire-Safe Design: Complies with API 607/6FA fire test requirements, ensuring valve integrity during fire emergencies.
- Alloy Steel Body & Trim: High-strength low-alloy steel (ASTM A216 WCB or equivalent) with hard-faced seat and plunger for extended wear life.
- Double Block & Bleed Capability: Provides positive isolation and allows safe venting of trapped pressure between seals.
- Low Torque Operation: Optimized plunger geometry reduces operating torque, enabling easy manual or actuated control.
- Flanged End Connections: Standard raised face or ring-type joint flanges per ASME B16.5, suitable for Class 2500.
- Anti-Static Device: Prevents static charge buildup, critical for flammable gas services.
- Seal Options: Available with PTFE, graphite, or metal seals to match specific temperature and pressure requirements.
- Inspection & Testing: 100% hydrostatic shell test, seat leakage test, and fire-safe test per API 607.
| Parameter | Value |
|---|---|
| Size | 10 inch (DN250) |
| Pressure Class | 2500LB (Class 2500) |
| Body Material | Alloy Steel (ASTM A216 WCB / A217 WC6) |
| Trim Material | 13Cr / 304SS / 316SS (Stellite overlay optional) |
| End Connection | Flanged (RF or RTJ) ASME B16.5 |
| Design Standard | ASME B16.34 / API 6D (optional) |
| Fire Safe Test | API 607 / API 6FA |
| Operating Temperature | -29°C to +200°C (higher on request) |
Benefits for Your Application: This valve delivers exceptional sealing performance even under high differential pressure. The fire-safe seating ensures that in the event of a fire, the valve maintains a seal that meets stringent industry standards. Its robust alloy steel construction resists sulfide stress cracking, making it suitable for sour gas (NACE MR0175 optional). The compact design reduces installation footprint, and the low-maintenance internal geometry minimizes downtime.
Our manufacturing facility in Shanghai, China, employs advanced CNC machining and robotic welding to ensure dimensional accuracy. Each valve undergoes a series of quality checks including radiographic examination (RT), magnetic particle inspection (MT), and hydrostatic testing at 1.5 times the rated pressure. We also offer optional nitrogen purge and bubble leak testing for zero fugitive emissions.
Why Choose Shanghai Zhibang Valve?
Since 2016, we have grown into a reliable valve manufacturer with an annual export value between US$1 million and US$1.5 million. Our ISO9001:2015 certified quality management system ensures consistent product excellence. We serve diverse markets across North America, South America, Europe, Africa, Oceania, the Middle East, and Asia. Our valves are shipped from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring fast and cost-effective logistics.
We understand that every project is unique. Our engineering team offers customization options such as extended bonnets, gear operators, limit switches, and special coatings. We provide comprehensive documentation including material certificates, test reports, and a standard 12-month warranty. With a focus on fire safety and high-pressure reliability, our 10" 2500LB alloy steel plunger valve is the optimal choice for natural gas pipeline operators, gas processing plants, and utility companies.
Contact us today for a competitive quote and technical data sheet. Let Shanghai Zhibang Valve be your trusted partner in critical flow control.
Frequently Asked Questions
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Q: What is the difference between a plunger valve and a gate valve?
A: A plunger valve uses a cylindrical plunger that moves linearly to open or close the flow path. It provides better sealing and throttling capabilities compared to a gate valve, especially in high-pressure gas services. The plunger design also offers self-cleaning action and reduced maintenance. -
Q: Is this valve suitable for sour gas (H₂S) service?
A: Yes, the alloy steel body and trim can be supplied with NACE MR0175/ISO 15156 compliance upon request. We recommend specifying the H₂S content in your gas to ensure the correct material selection, such as Inconel overlay or controlled hardness. -
Q: What fire-safe standards does this valve meet?
A: Our plunger valve is designed and tested to API 607 (fire test for quarter-turn valves) and API 6FA (fire test for gate valves). However, the plunger valve's seat design ensures a metal-to-metal seal that passes the test. We can provide a fire-safe certificate upon request. -
Q: Can the valve be operated with an actuator?
A: Absolutely. The valve top flange is designed to ISO 5211, allowing direct mounting of pneumatic, electric, or hydraulic actuators. We also offer manual gear operators for high-torque applications. -
Q: What is the delivery time for a 10" 2500LB plunger valve?
A: Standard delivery is 30–45 days from order confirmation. For urgent projects, we can offer expedited production (15–20 days) with a small surcharge. Please contact our sales team for current lead times. -
Q: Do you provide third-party inspection services?
A: Yes, we welcome third-party inspection by SGS, BV, Lloyd's, or any client-nominated agency. Our facility is open for inspection at any stage of production. -
Q: What is the warranty period?
A: We offer a standard 12-month warranty against manufacturing defects from the date of shipment. Extended warranty options are available for critical applications. -
Q: Can you customize the valve for low-temperature service?
A: Yes, we can supply low-temperature carbon steel (LTCS) or stainless steel versions for cryogenic applications. Please specify your minimum design temperature, and we will recommend suitable materials.
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