Eliminate backflow risk, protect your pipeline investment, and meet code compliance — with a valve engineered for reliability. Designed for purchasing managers, technical directors, and operations teams who demand performance, not promises.
Every day without a double check valve in your critical lines, you're gambling with contamination, downtime, and regulatory fines. Here are the biggest risks procurement teams face:
A single backflow event can introduce chemicals, sewage, or bacteria into your potable water supply. Fines from EPA/OSHA can exceed $25,000 per violation.
Standard swing check valves fail silently. When they stick open, you lose pressure. When they slam shut, you get water hammer. Average repair: $1,200-$4,700 per incident.
US building codes (IPC, UPC, IAPMO) increasingly require double check valve assemblies for commercial and industrial applications. Using the wrong valve means failed inspection and schedule slips.
Many suppliers promise low prices but hide shipping fees. Oversized, heavy valves from fragmented suppliers drive up your total landed cost by 30-50%.
Cheap castings, thin discs, and poor sealing surfaces lead to premature failure. Replacing a valve every 6-12 months eats into your maintenance budget and operational efficiency.
A double check valve (DCV) is a backflow prevention device that uses two independently operating check valves — typically spring-loaded poppet or disc-type — to prevent contaminated water from flowing backward into a potable water supply. Unlike a single check valve, it provides redundant protection in compliance with AWWA and ASSE standards.
At Ningjin Thriveon Valve Co., Ltd., we engineer DCVs that solve the pain points above — with a focus on quality assurance, fast delivery, and cost transparency.
We operate a fully integrated manufacturing facility in Northern China — casting, machining, assembly, and testing under one roof. No middlemen. You get factory pricing and complete traceability.
Our DCVs are tested to ISO 9001, CE, and RoHS standards. Each valve undergoes a 100% hydrostatic shell test, seat leakage test, and crack pressure verification before shipping.
Need a specific flange drilling, thread type (NPT/BSP/G), or custom pressure rating? Our engineering team (10+ years experience) can deliver prototypes in 10-14 days.
Standard lead time: 15-25 days for most sizes. We use consolidated shipping to the US, Saudi Arabia, South Africa, and Italy — reducing your freight costs by up to 25% compared to fragmented suppliers.
Two independently seated spring-loaded discs provide redundant backflow prevention even if one seat is compromised. Suitable for low- to medium-hazard applications (ASSE 1015 compliant).
Choose from ductile iron, cast steel, stainless steel (SS304/SS316), or bronze. Threaded, flanged, or grooved ends available — standard sizes 1/2" to 12".
Compare our standard models. Custom configurations available upon request.
| Parameter | TBV-100 (Threaded) | TBV-200 (Flanged) | TBV-300 (Grooved) |
|---|---|---|---|
| Size Range | 1/2" – 2" | 2" – 12" | 2" – 8" |
| Pressure Rating | 200 psi (PN16) | 150 psi (PN10/PN16) | 300 psi (PN20) |
| Temperature Range | -20°F to 250°F | -20°F to 350°F | -20°F to 250°F |
| Body Material | Bronze / SS316 | Ductile Iron / Cast Steel / SS304 | Ductile Iron / SS304 |
| Disc Material | SS316 / NBR | SS304 / EPDM | SS304 / EPDM |
| End Connections | NPT / BSP / G Thread | ANSI 125/150 Flange | Grooved (Victaulic compatible) |
| Compliance | ASSE 1015, CSA B64.2 | AWWA C510, ASSE 1015 | AWWA C510, ASSE 1015 |
| Testing | 100% hydrostatic + seat test | 100% hydrostatic + seat test | 100% hydrostatic + seat test |
what does double check valve mean what is a double check valve used for what is a double check valve tap
* Custom pressure ratings (PN25/PN40) and materials (SS316, duplex) available. Contact us for your specific requirements.
In high-rise water supply systems, DCVs prevent backflow from boiler loops, cooling towers, and irrigation lines into potable water. A major US hotel chain reduced contamination risk by 100% after switching to Thriveon DCVs.
Chemical mixing tanks, cooling jackets, and washdown stations require dual redundancy to protect sensitive processes. Our SS316 DCVs handle aggressive fluids without corrosion.
Fertilizer injectors and pesticide mixers create cross-connection hazards. DCVs at the point of use keep your main water supply safe — compliant with local health department codes.
Pump stations, water treatment plants, and reclaimed water systems rely on DCVs to separate potable and non-potable streams. Our flanged models meet AWWA C510 standards.
A double check valve (DCV) is a backflow prevention device consisting of two independent spring-loaded check valves in a single body. Under normal flow, both discs open. If backflow occurs, the first disc closes, and if it fails, the second disc provides backup. This creates a redundant barrier against contamination. It's commonly used in low- to medium-hazard applications (ASSE 1015).
A standard check valve uses a single disc or swing mechanism to prevent backflow. A double check valve has two independent seating surfaces, providing dual protection. If one seat wears or debris prevents sealing, the second seat still stops backflow. This redundancy is critical for code compliance in commercial and industrial systems. DCVs also include test ports for field verification.
In the US, International Plumbing Code (IPC) and Uniform Plumbing Code (UPC) require DCVs for low-hazard cross-connections — such as irrigation systems, fire sprinkler systems (non-potable), and boiler feed lines. Many state and local health departments also mandate DCVs for commercial kitchens, laundries, and industrial washdown stations. Always verify with your local authority having jurisdiction (AHJ).
Absolutely. We offer OEM/ODM customization including: specific flange drillings (ANSI, DIN, JIS), special thread types (NPT, BSP, G), custom pressure ratings (up to PN40), alternative elastomers (EPDM, Viton®, NBR), and higher-grade materials (SS316, Duplex). Our engineers can deliver samples in 10-14 days. Contact us with your specifications.
Standard lead time is 15-25 days from order confirmation. For urgent projects, we offer expedited production (10-15 days) at a small premium. We ship via consolidated sea freight to major US ports (Los Angeles, Houston, New York), reducing your shipping cost. A typical 20GP container can hold 2,000-3,000 DCVs (depending on size). Request a quote for exact pricing to your location.
Yes. We offer free samples for qualified buyers (standard sizes up to 2"). Simply pay the shipping cost. Sample delivery takes 5-8 days via DHL/FedEx. This allows you to test material quality, sealing performance, and dimensional accuracy before placing a bulk order.
We provide a 12-month warranty against manufacturing defects from the date of shipment. For high-volume or strategic accounts, extended warranties are negotiable. All claims are processed within 48 hours with replacement parts or units dispatched immediately.
Maintenance is minimal. We recommend annual testing using the built-in test ports (per ASSE 1015). Inspect the discs and seats for wear if the valve is in a high-cycling application. Replace the elastomer seals every 3-5 years or as needed. Thriveon provides a maintenance kit and technical support for all our DCVs.
"We switched to Thriveon for our HVAC retrofit project. Their double check valves performed flawlessly during pressure testing. The lead time was 18 days, which saved our schedule. I've already placed a second order for 300 units."
★★★★★
"Quality is consistent, and the pricing is transparent. No hidden fees. Their SS316 DCVs are holding up well in our coastal environment. Highly recommend for any buyer looking for a reliable supplier."
★★★★★
"The OEM process was smooth. We needed custom flange drilling and special elastomers for a chemical plant. Thriveon delivered prototypes in 12 days. The final batch was perfect. Engineering support is top-notch."
★★★★★
"Our previous supplier had 40% rejection rates. Thriveon's Q.C. is rigorous — 100% tested before shipping. We haven't had a single failure in 18 months. That's the kind of reliability we need."
★★★★★
"We distribute Thriveon valves to our contractor network. The feedback is overwhelmingly positive. Competitive pricing, fast delivery, and no quality complaints. A great partner for our business."
★★★★★
Tell us your size, material, quantity, and target price. We'll respond with a detailed quotation including factory pricing, lead time, and shipping options.
Or email us: info@thriveonvalve.com | Call: +86-311-86935302
Company address: South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei, China
Related Products
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 
Trusted by Engineers and Buyers Across the Globe