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Help CenterSpring Loaded Check Valve With 1 Year Warranty and Mill Test Report for Oilfield Pipeline
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Shanghai Zhibang Valve Manufacture Co., Ltd., an ISO9001-certified manufacturer established in 2016, proudly presents our Spring Loaded Check Valve — a reliable solution for oilfield pipeline applications. With an annual export value of US$1–1.5 million and a global market presence spanning North America, Europe, Asia, and more, we combine engineering expertise with rigorous quality control. Each valve comes with a 1-year warranty and a Mill Test Report (MTR) to ensure traceability and performance. Our spring-loaded design ensures rapid closure, preventing backflow and protecting downstream equipment even under high-pressure or fluctuating flow conditions.
This check valve is specifically engineered for the demanding environment of oilfield pipelines, where reliability and safety are paramount. The spring mechanism provides positive closing action independent of gravity, making it suitable for horizontal, vertical, or inclined installations. Whether used in crude oil transport, gas gathering lines, or water injection systems, our valve minimizes water hammer and pressure surges, extending the life of your pipeline network.
Key Features & Technical Specifications
- Spring-Loaded Design: Ensures quick, positive shut-off to prevent reverse flow, even at low flow rates.
- Durable Construction: Available in carbon steel, stainless steel, or alloy steel to withstand corrosive media and high pressures.
- Wide Size & Pressure Range: From 2" to 24" (DN50-DN600) and pressure ratings up to ANSI 2500# (PN420).
- Multiple Connection Options: Flanged (RF/RTJ), threaded (NPT/BSP), or butt-weld ends for easy integration.
- Enhanced Sealing: Seat materials include PTFE, NBR, or Viton, providing leak-tight performance across a wide temperature range.
- Mill Test Report Included: Every valve is supplied with an MTR documenting material composition, mechanical properties, and pressure test results.
- 1-Year Warranty: Covers manufacturing defects, giving you peace of mind.
| Parameter | Standard Range | Customizable? |
| Body Material | Carbon Steel / Stainless Steel / Alloy Steel | Yes |
| Size (Nominal) | 2" – 24" | Yes (up to 48" on request) |
| Pressure Rating | ANSI 150# – 2500# | Yes |
| Connection Type | Flanged / Threaded / Butt Weld | Yes |
| Spring Material | SS304 / SS316 | Yes |
| Seal Material | PTFE / NBR / Viton | Yes |
| Temperature Range | -29°C to +425°C | Yes |
| Warranty | 1 Year | N/A |
Our spring-loaded check valves are manufactured in accordance with API 6D, ASME B16.34, and other international standards. Each valve undergoes 100% pressure testing (hydrostatic and pneumatic) before shipment. The MTR provides full traceability of raw materials, verifying that the valve meets your project specifications. The 1-year warranty covers both parts and labor, reflecting our confidence in product durability.
Why Choose Shanghai Zhibang Valve?
- ISO9001 Certified: Our quality management system ensures consistent production excellence.
- Experienced Manufacturer: Founded in 2016, we have shipped over 10,000 valves to clients worldwide.
- Global Reach: Serving North America, Europe, Middle East, Africa, Oceania, and Asia with annual exports exceeding US$1 million.
- Flexible Shipping: Available from Shanghai, Guangzhou, Hong Kong, and Beijing ports for fast delivery.
- Custom Solutions: We offer customized sizes, materials, and pressure ratings to meet your specific oilfield requirements.
Backed by a dedicated team of engineers and a robust supply chain, Shanghai Zhibang Valve is your trusted partner for oilfield pipeline components. Our spring-loaded check valves have been installed in major oil and gas projects, delivering reliable performance under extreme conditions. With the Mill Test Report, you can verify every aspect of the valve's quality. Contact us today to discuss your requirements or request a quotation. We are ready to support your next project with competitive pricing, fast delivery, and exceptional after-sales service.
Frequently Asked Questions
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Q: What is the warranty period for this check valve?
A: We offer a 1-year warranty covering manufacturing defects. The warranty is valid from the date of shipment. -
Q: Do you provide a Mill Test Report (MTR) with every valve?
A: Yes, each valve is supplied with an MTR that includes material certifications, pressure test results, and dimensional inspection data. -
Q: Can this valve be used for high-temperature applications?
A: Yes, depending on the seal and body material. Standard temperature range is -29°C to +425°C, and higher temperatures are available upon request. -
Q: Is the spring replaceable?
A: The spring is designed for long service life, but it can be replaced during maintenance. We recommend consulting our technical team for specific instructions. -
Q: What connections are available?
A: We offer flanged (RF/RTJ), threaded (NPT/BSP), and butt-weld connections. Other custom connections are possible. -
Q: How long does delivery take?
A: For standard sizes and materials, delivery is typically 15–30 days after order confirmation. Custom orders may take longer. Please inquire for exact lead times. -
Q: Can you provide valves for sour gas (H2S) service?
A: Yes, we can supply valves with NACE MR0175 compliant materials. Please specify your requirements when ordering. -
Q: Do you have a minimum order quantity?
A: We accept small orders, but larger quantities may receive better pricing. Contact our sales team for details.
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