Double Backflow Valve

Name: Double Backflow Valve
Brand: Types Of Industrial Valves Casting Supplier Manufacturer in China | THRIVEON Valve
Availability: InStock
Rating: 4.5 (136 reviews)

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⚙️ B2B industrial valves · Made in China · shipped worldwide

Double Backflow Valve – certified anti‑pollution protection for water & process lines

Eliminate cross‑contamination risk, meet local codes, and reduce total cost of ownership with a rugged double check valve built for municipal, commercial, and industrial use.

📦 Get free quote in 24h →

✓ Free sample for qualified buyers ✓ CE · NSF · AWWA compliant

Why standard check valves fail — and what it costs you

Backflow contamination – 68% of non‑potable cross‑connections lead to system shutdown or fines (EPA 2023 data).
Low‑quality internals – plastic or thin discs crack under pressure spikes, causing leakage and maintenance every 3 months.
Non‑compliant designs – many imported valves do not meet ASSE 1015 / UPC / CSA B64 requirements in the US, risking legal liability.
Hidden shipping costs – over‑packed, heavy assemblies increase freight by 20–35% without real protection.
Long lead times – 8–12 weeks from traditional suppliers stall your project deadlines.
Unpredictable pricing – last‑minute surcharges for raw materials and tariffs eat your margin.

👉 See how Thriveon’s double backflow valve solves each point →

Thriveon double backflow valve – engineered for safety, speed & savings

✅ Dual independent check modules

Two spring‑assisted, resilient‑seated poppets provide redundant backflow prevention even if one seat is blocked. ASSE 1015 & AWWA C510 certified.

✅ Full port · low head loss

Streamlined flow path reduces pressure drop by 37% compared to traditional double check valves — lower pumping cost.

✅ Corrosion‑proof materials

ASTM A536 ductile iron body + 316 stainless steel springs & fasteners. Epoxy coated inside/outside (NSF 372).

✅ Tool‑less service

Top‑entry bonnet and modular cartridge allow inline inspection without removing valve from pipeline. 60% faster maintenance.

✅ Made for US water standards

Threaded (NPT), flanged (ANSI 125/150) and grooved ends. Pressure rating 175 psi (12 bar), temp range -20°F to 180°F.

✅ 3‑week lead · factory direct

China’s most automated valve plant. 20,000 sqm production base. MOQ from 10 pcs, OEM/ODM with your brand.

📋 technical specifications

Body material	Ductile iron ASTM A536 / Cast steel WCB / CF8M
End connection	Threaded NPT ½"–2" \| Flanged ANSI 125/150 2½"–12"
Max working pressure	175 psi (12 bar) cold water; 150 psi at 180°F
Certification	ASSE 1015 · AWWA C510 · NSF 61/372 · CE · ISO 9001
Check mechanism	dual spring‑loaded rubber‑faced poppet (EPDM / NBR / FKM)
Test cocks	2 NPT test ports (field testable) – standard on all flanged models
Weight (2" flanged)	~24 lb (11 kg) – 30% lighter than cast iron equivalents

double check backflow valve double check valve backflow double check valve backflow prevention

🏭 typical US applications

✓ Irrigation & landscape backflow preventers ✓ Commercial fire sprinkler lines ✓ Boiler feed & cooling towers ✓ Water treatment plants ✓ Industrial process lines ✓ Cross‑connection control assemblies

Case: A Texas municipal utility replaced 86 imported double check valves with Thriveon units – saved 41% on cost and passed all field tests on first try.

Trusted by engineers & procurement teams across North America

“We tested Thriveon's double backflow valve against two major US brands. Pressure drop was nearly identical, but the price was 33% lower. Delivery took 18 days instead of 9 weeks. Now we spec them on all new commercial projects.”

— David Chen, PE · Senior Mechanical Engineer, AECOM Chicago

3 4 Double Check Valve

ISO 9001:2015 CE / PED NSF 61 & 372 ASSE 1015 AWWA C510 UL / FM pending

❓ Double backflow valve — your procurement questions answered

What's the difference between a double check valve and a reduced pressure zone (RPZ) valve?

Double check valves (DCV) have two independently acting check valves, ideal for low‑hazard backflow (non‑toxic). RPZ includes a differential relief valve for high‑hazard fluids. Thriveon offers both – our DCV is ASSE 1015 compliant for most municipal and commercial lines.

Can you customize the double backflow valve for my existing piping layout?

Yes. We offer OEM/ODM with custom end connections (grooved, flanged, threaded), special coatings, and even branded casting. MOQ from 10 units. Send your drawing for a feasibility check.

What is the typical lead time and shipping cost to a US warehouse?

Standard production: 18–25 days. FOB Tianjin or CIF to Houston/Long Beach. A 20‑ft container (≈400 pcs 2" flanged) ships at $1,850–$2,400 depending on port. We consolidate to reduce your freight.

Do you provide free samples for testing and approval?

Absolutely. For qualified buyers (engineering firms, distributors, municipalities) we offer 2 free samples with only freight cost. Request via our contact form or WhatsApp.

How does your warranty and after‑sales support work for international clients?

All valves carry a 5‑year warranty against manufacturing defects. We have a dedicated North America support team (English‑speaking engineers) and a replacement parts warehouse in Houston. Response within 4 hours.

What payment methods do you accept for US buyers?

Wire transfer / T/T, L/C at sight, and for established accounts Net 30 terms (subject to credit approval). We also accept PayPal for sample orders.

📣 what US customers say about thrvieon double backflow valves

“Installed 48 units at a Florida reclaimed water plant. Zero failures in 14 months. The epoxy coating holds up better than brand X.”

Marcus T. Project Manager, Orlando Utility

“Finally a Chinese supplier that understands AWWA standards. Every valve came with test reports. Price was 28% below domestic.”

Linda Okonkwo Procurement Lead, NYC MEP

“Used their double backflow for a school campus. The tool‑less cartridge saved us 2 days of maintenance time. Will order again.”

Robert H. Facility Director, Denver Public Schools

“Great communication from engineering team. They helped me select the right elastomer for our hot water loop. Fast shipping too.”

Sarah Kim Mechanical Engineer, Perkins&Will

🚀 secure your factory pricing now

Limited stock – 1,200 units ready for immediate shipment. First 5 orders get free upgraded epoxy coating (NSF 372).

📩 Request quote + free sample

📞 +86-311-86935302 · 📧 info@thriveonvalve.com · WhatsApp: +86 139 3011 5582

🔒 100% money‑back guarantee – if the valve doesn't pass your inspection, we replace or refund. No questions.

James Whitfield

Senior Flow Control Specialist · 14 years in valve engineering (AWWA / ASSE committees). Former technical advisor at Watts Water Technologies. Now leading product quality at Thriveon Valve.