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Help CenterSpring Loaded Check Valve 304 Stainless Steel Class 150 for Oilfield Gas Transmission Pipeline
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Shanghai Zhibang Valve Manufacture Co., Ltd., a professional manufacturer established in 2016, proudly presents our Spring Loaded Check Valve made of 304 Stainless Steel, rated Class 150, specifically designed for oilfield gas transmission pipelines. This valve combines robust construction with reliable spring-assisted closure, ensuring minimal backflow and maximum system integrity. With ISO9001 certification and annual export value exceeding US$1 million, we deliver high-quality solutions trusted by customers across North America, Europe, and Asia. Our valve is engineered to withstand harsh oilfield environments, offering long service life and low maintenance.
Key Features and Benefits:
- 304 Stainless Steel Construction: Excellent corrosion resistance against sour gas, saltwater, and chemicals, ensuring durability in demanding oilfield conditions.
- Spring-Loaded Design: Provides rapid closure upon flow reversal, reducing water hammer and protecting downstream equipment.
- Class 150 Pressure Rating: Suitable for low to medium pressure gas transmission lines, complying with ASME B16.34 standards.
- Flanged or Threaded Connections: Available in both options to fit existing pipeline systems, facilitating easy installation and maintenance.
- Metal-to-Metal Sealing: Optional PTFE seats for bubble-tight shutoff, ensuring zero leakage in critical applications.
- Wide Size Range: From 1/2 inch to 12 inches, with customizable end connections to meet specific project requirements.
- Low Pressure Drop: Streamlined flow path minimizes energy loss, optimizing pipeline efficiency.
Technical Specifications:
| Parameter | Value |
| Material | 304 Stainless Steel (body, spring, disc) |
| Pressure Rating | Class 150 (PN20) |
| Size Range | 1/2" – 12" (DN15 – DN300) |
| Connection Type | Flanged (RF) / Threaded (NPT/BSP) |
| Seat Material | 304 SS (Metal-to-Metal) or PTFE |
| Spring Material | 304 Stainless Steel |
| Working Temperature | -20°C to +150°C (-4°F to +302°F) |
| Applicable Medium | Natural gas, crude oil, water, air |
Why Choose Shanghai Zhibang Valve?
As a dedicated manufacturer with ISO9001 quality management system, we ensure every valve undergoes rigorous testing before shipment. Our annual export value of US$1 million to US$1.5 million demonstrates our global reach and customer trust. We serve diverse markets including North America, South America, Eastern Europe, Southeast Asia, Africa, and Oceania, providing tailored solutions for oilfield, petrochemical, and gas transmission industries. Our valves are shipped from Shanghai, Guangzhou, Hong Kong, and Beijing ports, with flexible logistics to meet your deadlines. Combined with our technical support and competitive pricing, you can rely on us for dependable, long-lasting check valves. Contact us today for a quote or detailed engineering drawings.
Frequently Asked Questions
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Q1: What is the working pressure of this check valve?
A: The valve is rated Class 150, corresponding to a maximum allowable working pressure of 285 psi (19.6 bar) at ambient temperature, per ASME B16.34. -
Q2: Can this valve be used for liquid service?
A: Yes, it is suitable for both gas and liquid applications, including water, oil, and natural gas. However, for high-viscosity fluids, please consult our engineering team. -
Q3: Are spare parts available?
A: Yes, we supply replacement springs, seats, and gaskets. Please specify your valve size and model when ordering. -
Q4: What is the minimum opening pressure required?
A: The spring is pre-loaded to ensure closure at zero flow. The cracking pressure is typically 0.5–1 psi, adjustable upon request. -
Q5: Can you provide NACE MR0175 compliant valves?
A: While our standard valves are made of 304 SS, we can offer NACE-compliant materials (e.g., 316L) as an option. Note that NACE certification is available upon request. -
Q6: How long is the warranty period?
A: We offer a standard 12-month warranty from date of shipment against manufacturing defects. Extended warranty can be negotiated. -
Q7: Do you provide custom sizes or end connections?
A: Yes, we can customize the valve size, end connections (e.g., socket weld, grooved), and face-to-face dimensions to meet your pipeline specifications. -
Q8: What is the typical lead time?
A: For standard sizes and materials, lead time is 15–30 days. For customized orders, please allow 30–45 days depending on complexity.
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