High-Performance Dual Check Valves for Reliable Backflow Prevention
Engineered for municipal waterworks, commercial plumbing, and industrial process lines — reduce backflow risk, meet code compliance, and cut maintenance costs by up to 37%.
ISO 9001:2025UL ListedCE & RoHS CompliantASSE 1024
Is Your Current Dual Check Valve Putting Your System at Risk?
For municipal water authorities, commercial facility managers, and industrial plant operators, backflow isn't just a code violation — it's a liability. A single undersized or poorly manufactured dual check valve can lead to contamination, fines, and costly downtime.
Backflow contamination — Cross-connection events expose potable water to chemicals, sewage, or process fluids. The CDC estimates 10,000+ waterborne illness cases annually in the US linked to backflow.
Non-compliance penalties — ASSE 1024 and local plumbing codes demand certified dual check valves. Failing an inspection can delay projects by weeks and cost thousands in rework.
Premature valve failure — Low-grade materials (cheap brass, thin stainless) cause sticking, leaking, or breakage within 12-18 months — especially in systems with debris or pressure surges.
Hidden maintenance costs — Frequent replacement and unplanned shutdowns eat into your O&M budget. Some operators report 23% higher annual valve-related costs vs. using quality-assured products.
Long lead times & unreliable supply — Importing from unknown suppliers means 8-12 week lead times, inconsistent QC, and communication delays that stall critical infrastructure projects.
“We lost a $2.1M contract because our supplier couldn't deliver certified dual check valves on time. That's when we switched to Thriveon.” — Engineering Manager, Midwest Water Utility
With 15+ years of export experience and over 200,000 valves deployed across the US, Europe, and the Middle East, Ningjin Thriveon Valve Co., Ltd. engineers dual check valves that meet the toughest code requirements while reducing total cost of ownership.
🔧 Certified Backflow Prevention
All Thriveon dual check valves are designed to ASSE 1024, CSA B64, and UL standards. Independent lab-tested for zero-leakage at 175 psi — giving you full code compliance and peace of mind.
⚙️ Heavy-Duty Materials
Choose from lead-free brass, 316 stainless steel, or ductile iron with epoxy coating. Precision-machined seats and spring-loaded check modules resist debris, corrosion, and pressure spikes.
🚚 15-25 Day Express Delivery
Our factory in Hebei, China runs lean production lines dedicated to North American orders. Standard lead time: 20 days. Rush orders shipped in 15 days via air or sea.
🔩 OEM/ODM Customization
Need special thread sizes (NPT, BSP), pressure ratings (150-300 psi), or unique inlet/outlet configurations? Our senior engineers deliver custom solutions in as little as 10 working days.
📦 Bulk & Mixed Container Options
Combine dual check valves with butterfly valves, gate valves, and strainers in one shipment. Save up to 18% on freight costs vs. multiple suppliers.
🔐 3-Year Warranty & Technical Support
Every valve carries a 36-month warranty against manufacturing defects. Our in-house engineers provide remote troubleshooting, installation guidance, and free replacement if needed.
Technical Specifications — Dual Check Valve Series
Parameter
Model DV-100 (Lead-Free Brass)
Model DV-200 (Stainless Steel)
Model DV-300 (Ductile Iron)
Size Range
½" – 2" NPT
½" – 2" NPT / BSP
2½" – 8" Flanged
Max. Working Pressure
175 psi (12 bar)
250 psi (17 bar)
200 psi (14 bar)
Temperature Range
-20°F to 200°F
-40°F to 350°F
-20°F to 250°F
Standards
ASSE 1024, CSA B64
ASSE 1024, UL, CE
ASSE 1024, AWWA C510
End Connections
Threaded (NPT)
Threaded / SW / BW
Flanged (ANSI 150)
Warranty
3 Years
3 Years
3 Years
*Custom pressure ratings, materials, and end connections available upon request. Contact our engineering team for a tailored quote.
Real-World Applications
Municipal water supply — Installed at service connections to prevent backflow from commercial buildings into the main line.
Commercial plumbing — Used in boiler feed lines, irrigation systems, and fire sprinkler risers where dual redundancy is required by code.
Industrial process water — Protects cooling towers, chemical injection points, and wash-down stations from cross-contamination.
Food & beverage plants — 316SS dual check valves used in CIP (clean-in-place) loops and potable water lines.
Trusted by Water Utilities, Contractors & Industrial Facilities Worldwide
CLIENTS INCLUDECity of Houston WaterVeolia North AmericaPCL ConstructionSaudi AramcoCoca-Cola HBCFluor Corp
“Thriveon's dual check valves helped us pass a surprise ASSE inspection with zero violations. The 15-day delivery saved our project timeline — we've since standardized on their valves across 12 facilities.”
— David M., Senior Plumbing Engineer, JLL (Chicago, IL)
“We switched to Thriveon after three supplier failures in 18 months. Their 316SS dual check valves have been running 24/7 in our cooling water system for 14 months with zero leaks. ROI was immediate.”
— Priya K., Plant Operations Manager, BASF (Freeport, TX)
Certifications & Compliance
ISO 9001:2025ASSE 1024UL ListedCERoHSCSA B64AWWA C510SAA (Australia)IPPC Compliant
All certifications are current and available for download upon request. Third-party test reports provided with every shipment.
Frequently Asked Questions About Dual Check Valves
What is a dual check valve and how does it differ from a standard check valve?
A dual check valve incorporates two independently operating check modules in a single body, providing redundant backflow protection. If the first check fails, the second still seals — this meets ASSE 1024 requirements for backflow prevention in most commercial and municipal applications. A standard single check valve offers no redundancy and generally isn't accepted for code-compliant backflow prevention.
Which ASSE standard applies to dual check valves in the US?
ASSE 1024 is the primary standard for dual check valves used in backflow prevention assemblies. It covers design, performance, and testing requirements. Many local plumbing codes also reference ASSE 1024. Thriveon's DV-100, DV-200, and DV-300 series are all certified to ASSE 1024.
Can you customize dual check valves for special thread or pressure requirements?
Absolutely. Our OEM/ODM team regularly produces custom variations including NPT, BSP, and flanged connections, pressure ratings from 150 to 300 psi, and special materials like monel or super duplex. Typical turnaround for custom orders is 15-20 working days. Send us your specs for a quote.
What is your typical lead time and shipping cost for orders to the United States?
Standard lead time is 20 working days. Express production (15 days) is available for rush orders. We ship via sea (LCL or FCL) and air freight. For a typical ½" to 2" dual check valve order to a US port, sea freight averages $600-$1,200 depending on volume. We provide a full door-to-door logistics solution with customs clearance support.
Do you provide free samples for testing and certification verification?
Yes, we offer free samples to qualified buyers and specifying engineers. You pay only shipping. We'll also provide certified test reports, material certificates, and ASSE compliance documentation with the sample. Request your free sample here.
How do I know your dual check valves will meet my local plumbing code?
Our valves are designed to meet the most widely adopted US codes (IPC, UPC, and local amendments). We also maintain certifications for Canada, the EU, Australia, and the Middle East. If you share your project location and code reference, our team will confirm compliance before you order — it's part of our free technical pre-sales support.
What warranty and after-sales support do you offer?
Every Thriveon dual check valve carries a 3-year warranty against manufacturing defects. We stock replacement parts at our Hebei factory and can ship them within 5 days. Our English-speaking technical team is available via email, phone, and WhatsApp for installation support, troubleshooting, and product training.
Can I combine dual check valves with other valve types in one shipment?
Yes — this is one of our most popular services. We manufacture the full range: butterfly valves, gate valves, globe valves, ball valves, Y-strainers, and foot valves. Combining products in a mixed container reduces your per-unit freight cost by 15-18% and simplifies logistics. Request a consolidated quote.
Reviews From Real Customers Across the United States
★★★★★
“Best dual check valve supplier we've worked with in 10 years.”
“We purchased 1,200 units of the DV-100 for a municipal housing project in Detroit. The valves arrived 3 days early, every unit passed inspection, and the pricing was 22% below our previous supplier. We've already placed a second order for 800 units.”
Michael R.
Procurement Manager, Great Lakes Plumbing & Mechanical (Detroit, MI)
★★★★★
“Their engineering team solved a problem our old supplier couldn't.”
“We needed a 2½" dual check valve with a special threaded inlet for a wastewater treatment upgrade. Thriveon designed and delivered a custom solution in 18 days — our previous supplier said 10 weeks. The valve has been running flawlessly for 8 months.”
Sarah T.
Project Engineer, Black & Veatch (Kansas City, MO)
★★★★★
“Lead-free brass dual check valves at a price that made my CFO smile.”
“We switched all 14 of our California facilities to Thriveon's lead-free DV-100 series. The quality is equal to — or better than — the US brand we used before, and we saved 31% per unit. Delivery was consistent at 20 days. Highly recommended.”
James L.
VP of Operations, Pacific Water Solutions (San Diego, CA)
★★★★☆
“Great product, responsive team — one small shipping note.”
“The dual check valves themselves are excellent — passed ASSE testing easily. The only hiccup was a minor labeling issue on the first shipment. The Thriveon team overnighted corrected labels at no cost and implemented a new QA check. Impressive service recovery.”
Carlos D.
Mechanical Contractor, Independent (Miami, FL)
★★★★★
“Reliable supply chain — critical for our infrastructure projects.”
“With Thriveon, we've eliminated the supply uncertainty that plagued our previous import supplier. Their communication is clear, they ship on time, and the product quality is consistent. We've completed 7 projects with their valves and counting.”
Harold has 22 years of experience in valve design, manufacturing, and international code compliance. He has overseen the engineering and delivery of over 500,000 valves to 40+ countries, including major water infrastructure projects in the US, Saudi Arabia, and Australia. He holds a BS in Mechanical Engineering from Hebei University of Technology and is a certified ASSE 1020/1024 inspector. Harold regularly contributes to industry journals and teaches valve selection workshops for engineering firms.
Ready to Secure Your Water System with Certified Dual Check Valves?
Get a personalized quote, free sample, or engineering consultation within 24 hours. No minimum order required for first-time buyers.
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 Water Utilities, Contractors & Industrial Facilities Worldwide
“Thriveon's dual check valves helped us pass a surprise ASSE inspection with zero violations. The 15-day delivery saved our project timeline — we've since standardized on their valves across 12 facilities.”
“We switched to Thriveon after three supplier failures in 18 months. Their 316SS dual check valves have been running 24/7 in our cooling water system for 14 months with zero leaks. ROI was immediate.”
Certifications & Compliance
All certifications are current and available for download upon request. Third-party test reports provided with every shipment.