Engineered for North American water, wastewater, and industrial plants. ASME B16.5 / API 594 compliant. Direct pricing from a trusted Chinese OEM.
If you manage pumps, pipelines, or water treatment infrastructure, you know the true cost of a failing check valve isn't just the replacement part. It's the downtime, water hammer damage, and energy waste that quietly erode your O&M budget. Here are the most common pain points we hear from US plant managers:
Result: You're forced to choose between expensive domestic brands or risky offshore suppliers. There is a better way.
At Ningjin Thriveon Valve Co., Ltd., we've spent over a decade perfecting the balance between engineering precision and cost-effective manufacturing. Our double flange check valves are designed specifically to outperform traditional swing and wafer checks in demanding US applications.
Spring-assisted dual plates close before reverse flow develops, eliminating water hammer. Ideal for pump discharge lines where surge protection is critical.
Streamlined body design and optimized plate geometry reduce head loss by up to 30% compared to conventional swing checks, saving significant pump energy over the valve's lifetime.
Need special end connections, non-standard flange drilling, exotic alloys (SS316, Duplex), or custom coatings? Our engineering team delivers tailored solutions with fast turnaround.
As a vertically integrated factory in Hebei, China, we control our casting, machining, and assembly. Standard lead times: 4–8 weeks (vs. 16–20 from other suppliers). Expedited shipping available.
| Parameter | Range / Details |
|---|---|
| Size Range | 2″ – 48″ (DN50 – DN1200) |
| Pressure Class | ASME Class 150, 300, 600, 900, 1500 (PN10 – PN250) |
| Body Materials | Ductile Iron, WCB, WCC, CF8, CF8M, Duplex SS |
| Design Standard | API 594, ASME B16.34, AWWA C508 |
| Flange Drilling | ASME B16.5 (Class 150/300/600), ASME B16.47 (Series A/B) |
| Trim Material | SS304, SS316, Monel, Nitrile-coated, BUNA-N, Viton |
| Certification | ISO 9001, CE, API 594, ASTM Material Certs, PMI Test Reports |
Ideal for: Pump discharge lines, HVAC cooling towers, municipal water distribution, wastewater treatment, fire protection systems, and industrial process piping.
We are proud to supply valves to US engineering firms, municipal utilities, and Fortune 500 manufacturers. Our quality speaks for itself.
"We standardized on Thriveon's double flange check valves across three plants. Water hammer incidents dropped to zero, and we cut our valve maintenance budget by 37% in the first year. Their engineering support is world-class."
"Lead times were critical for our expansion project. Thriveon delivered 18 units of 24″ Class 150 in just 5 weeks – half the time of our previous supplier. The valves fit perfectly and passed all acceptance tests on the first try."
"We were skeptical about importing valves from China, but Thriveon's quality management is exceptional. Full ASTM material certs, positive material identification, and hydrostatic test reports came with every valve. We've since placed 3 repeat orders."
A wafer check valve is sandwiched between two pipeline flanges and relies on compression for sealing, making it lighter and more compact. A double flange check valve has its own integral flanges, bolting directly to the pipe flanges. This provides superior stability, easier installation, and better support for higher pressure classes (Class 300 & above) or larger diameters. It also allows the valve to be removed without disturbing the upstream/downstream piping.
A silent check valve (also called a non-slam or dual plate check valve) uses a spring-loaded mechanism that closes the plates instantly as soon as the forward flow stops. Unlike a swing check which relies on gravity and reverses flow to close, the spring acts before the flow column reverses, preventing the pressure surge that causes water hammer.
For standard sizes (2″–24″) in ductile iron or WCB, our lead time is typically 4–6 weeks. Larger sizes or exotic alloys may require 8–10 weeks. We also offer expedited production for urgent projects. Contact our sales team for a real-time delivery schedule.
Absolutely. We provide ASTM material certificates (EN 10204 3.1 or 3.2), PMI test reports, and hydrostatic/pneumatic pressure test reports as standard with every order. We also offer third-party inspection (SGS, BV, Lloyds) at your request.
Yes! As an OEM manufacturer, we can accommodate non-standard flange drilling, special face-to-face dimensions (AWWA, ISO, or custom), and specific end preparations. Just share your drawing or requirements, and our engineering team will provide a solution.
Our MOQ is 1 piece for standard valves. We understand the need for project-based purchases and prototype testing. For custom engineered valves, MOQ may be 5–10 pieces depending on complexity.
Our pricing is typically 30–50% lower than comparable US or European manufacturers, without compromising on material quality or traceability. By buying direct from our Chinese factory, you eliminate intermediary margins while gaining full engineering support and fast delivery. We offer a 100% performance guarantee or your money back.
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Get a custom quote, 2D/3D CAD drawing, and delivery timeline within 24 hours. We'll help you select the exact double flange check valve for your application.
Ningjin Thriveon Valve Co., Ltd.
📍 South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei, China
📞 +86-311-86935302 | ✉️ info@thriveonvalve.com | 🌐 www.thriveonvalves.com
✅ 100% Performance Guarantee | ✅ Free Samples for Qualified Projects | ✅ ISO 9001 / CE / API 594
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Call us on:
+86-311-86935302
+86-311-86935302
Email Us:
info@thriveonvalve.com
South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China 
