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Help CenterAlloy Steel Plunger Valve, Natural Gas High Pressure, 12-Month Warranty, Mill Test Report, Standard Compliant
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Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, is a professional manufacturer specializing in industrial valves. Our Alloy Steel Plunger Valve is engineered for high-pressure natural gas applications, offering reliable performance and long service life. Backed by ISO9001 certification and a 12-month warranty, this valve delivers exceptional sealing and safety, making it a trusted choice for global markets including North America, Europe, and Southeast Asia.
This plunger valve is designed with precision-machined alloy steel components to withstand extreme pressures and corrosive natural gas environments. Each unit undergoes rigorous testing and is supplied with a Mill Test Report (MTR) for full material traceability. The valve’s standard-compliant design ensures seamless integration into existing pipeline systems, while the plunger mechanism provides bubble-tight shut-off and minimal maintenance requirements.
Key Features & Specifications
- Material Excellence: Constructed from high-strength alloy steel (AISI 4140 / 4130), offering superior hardness and wear resistance for high-pressure gas service.
- Pressure Rating: Available in Class 1500LB to 2500LB (PN 250 – PN 420), suitable for natural gas transmission and distribution pipelines.
- Sealing Performance: Metal-to-metal sealing with optional soft seal inserts ensures zero leakage even after thousands of cycles.
- Operation: Manual handwheel, gearbox, or pneumatic/electric actuator options (customizable upon request).
- Temperature Range: -29°C to +121°C (extended range available).
- End Connections: Flanged (RF/RTJ) per ASME B16.5, or butt-weld ends on request.
- Standard Compliance: Design meets API 6D, ASME B16.34, and ISO 17292 requirements.
Technical Parameters (Typical)
| Size Range | 2" – 24" (DN50 – DN600) |
| Pressure Rating | Class 1500 / 2500 (PN 250 / 420) |
| Body Material | Alloy Steel A216 WCB / A217 WC6 / A182 F11 |
| Trim Material | 13Cr / Stellite (hardfacing) |
| Test Pressure | Shell: 1.5x rated pressure; Seat: 1.1x rated pressure |
Advantages & Customer Benefits
- Enhanced Safety: The plunger design prevents accidental opening under high pressure, ideal for natural gas systems where safety is critical.
- Reduced Maintenance: Self-lubricating plunger and replaceable seat rings extend service intervals, lowering operational costs.
- Full Traceability: Every valve is supplied with a Mill Test Report (MTR) for chemical composition and mechanical properties, ensuring material quality.
- 12-Month Warranty: Covers defects in materials and workmanship, giving you peace of mind.
- Global Compatibility: Designed to meet international standards (API, ASME, ISO), suitable for export to North America, Europe, Middle East, and more.
Trust & Reliability
Shanghai Zhibang Valve Manufacture Co., Ltd. has been a trusted manufacturer since 2016, with an annual export value of US$1 Million – US$1.5 Million. Our products are exported to over 15 regions including North America, South America, Southeast Asia, Africa, and Oceania. We are certified under ISO9001, ensuring a robust quality management system from raw material procurement to final inspection. Each Alloy Steel Plunger Valve is hydrostatically tested and functionally verified before shipment, and we offer flexible shipping options from Shanghai, Guangzhou, Hong Kong, and Beijing ports. With a strong commitment to customer satisfaction, we provide technical support and customization services to meet your specific requirements. Contact us today to discuss your project needs or request a quote.
Frequently Asked Questions (FAQ)
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Q: What materials are used in the plunger valve body?
A: The body is made of alloy steel such as A216 WCB, A217 WC6, or A182 F11, depending on pressure and temperature requirements. The plunger and seat are typically hardened with Stellite or 13Cr for wear resistance. -
Q: Is this valve suitable for sour gas (H2S) service?
A: Yes, with appropriate material selection (e.g., NACE MR0175 compliant) we can provide valves for sour gas environments. Please specify the service condition when ordering. -
Q: What is the standard lead time?
A: For standard sizes (2"-12"), typical lead time is 30-45 days. Custom sizes or special materials may require 60-90 days. We can expedite for urgent orders upon request. -
Q: Does the valve come with a Mill Test Report?
A: Yes, every valve ships with a Certified Mill Test Report (MTR) for the body and trim materials, including chemical and mechanical property data. -
Q: What actuation options are available?
A: We offer manual handwheel, gearbox, pneumatic cylinder, and electric actuator options. Actuators can be sourced from reputed brands or your preferred supplier. -
Q: How do you ensure the valve meets high-pressure natural gas standards?
A: Our design complies with API 6D and ASME B16.34. Each valve undergoes hydrostatic shell test, seat leakage test, and optional fugitive emission test (ISO 15848). -
Q: Can I get a sample before mass production?
A: Yes, we provide sample valves for evaluation. Sample cost depends on size and specifications; it is refundable for bulk orders. -
Q: What is your warranty policy?
A: We offer a 12-month warranty from the date of shipment against manufacturing defects. Warranty covers replacement parts or repair, excluding misuse or improper installation.
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