Eliminate backflow risk in your piping system with our API 594-compliant double flanged wafer check valves. Engineered for industrial water, oil, and gas applications â with 40% faster lead times than industry average.
â ISO 9001 | CE | API 594 | 10,000+ valves shipped to USA, Saudi Arabia, South Africa & Italy
Water hammer and seal failure in ordinary check valves cause backflow damage, leading to $12,000â$50,000 in unplanned maintenance per incident in mid-size plants.
Low-grade imported valves often require replacement within 12â18 months. With shipping delays, you're looking at 30% higher annual costs versus a quality double flanged wafer check valve from a direct manufacturer.
Non-certified valves fail inspection in regulated industries (oil & gas, water treatment). Project delays can cost $1,500+ per hour in lost productivity.
Waiting 16â22 weeks for OEM valves from Europe or the US disrupts your project timeline. 68% of procurement managers cite slow delivery as their top supply chain pain point.
Without direct factory control, batch-to-batch variation in disc sealing and flange alignment leads to leakage, rework, and strained client relationships.
Oversized packaging, port delays, and complex customs clearance for non-standard valves add 15â25% unexpected cost to your procurement budget.
Our double flanged wafer check valve combines robust design, global certifications, and agile manufacturing to solve the exact pain points procurement teams face every day.
Resilient disc and precision-machined seat ensure bubble-tight shut-off per API 598. Tested at 1.5x rated pressure.
Factory-direct production with 500+ tons of raw stock. Standard lead time just 15â25 days vs. industry average of 8â12 weeks.
Each valve comes with material test certificates (MTC), dimensional report, and hydrostatic test record. Full batch traceability from melt to final assembly.
Custom flange drilling (ANSI B16.5, DIN, JIS), special coatings, actuator mounting, and pressure classes up to Class 1500.
ISO 9001:2015, CE/PED, API 594, and third-party inspection by BV, SGS, or TĂV at your request.
Direct factory pricing eliminates broker margins. Combined with optimized sea freight (FOB Tianjin), you save 20â35% vs. equivalent European valves.
| Parameter | Available Range | Standard / Notes |
|---|---|---|
| Size (DN / NPS) | DN50 â DN600 (2" â 24") | Custom sizes available upon request |
| Pressure Class | PN10 / PN16 / PN25 / Class 150 / Class 300 / Class 600 | Higher classes on request (Class 900/1500) |
| Face-to-Face Standard | API 594, EN 558, ISO 5752 | Short pattern or long pattern as specified |
| Flange Standard | ANSI B16.5, DIN 2501, JIS B2220, AS 2129 | Flat face or raised face (RF) |
| Body Material | Cast Iron (GGG40/50), Ductile Iron, WCB, CF8/CF8M (SS304/316), Duplex SS | Consult for special alloys (Hastelloy, Monel) |
| Disc Material | Ductile Iron + EPDM/NBR, SS304, SS316, Duplex | Resilient seated or metal-to-metal sealing |
| Seat Material | EPDM, NBR, Viton, PTFE, Metal (Stellite overlay) | Temperature range: -20°C to +200°C (EPDM: up to 120°C) |
| Operation | Automatic (non-return) / Spring-assisted closure | Optional lever & weight, or actuator mounting |
| Testing | Shell test: 1.5x rated pressure; Seat test: 1.1x rated pressure | Hydrostatic per API 598 / ISO 5208 |
| Certification | ISO 9001, CE/PED, API 594, ATEX (optional), MTC 3.1 | Third-party inspection (BV, SGS, TĂV) available |
flanged wafer check valve double wafer check valve flanged wafer type check valve
Pump discharge lines, filtration systems, and treatment plants. Our double flanged wafer check valve prevents backflow with zero leakage in over 200 municipal projects.
Pipeline transfer stations, manifolds, and tank farms. API 594 compliance ensures safety in hydrocarbon service up to Class 600.
Chilled water loops, cooling towers, and fire sprinkler systems. Compact wafer design saves space and reduces installation cost.
Cooling water, boiler feed, and condensate systems. High-temperature EPDM and metal seats handle demanding thermal cycles.
A double flanged wafer check valve is a compact, non-return valve that fits between two pipe flanges. Unlike a traditional flanged swing check valve (which has a hinged disc and takes more space), the wafer version has a short face-to-face dimension (per API 594), making it lighter, easier to install, and more cost-effective in tight piping layouts. The 'double flanged' means the valve body itself has integral flanges on both ends, offering better alignment and sealing than lug-style designs.
We offer a wide range: body materials from ductile iron (GGG40/50), WCB carbon steel, CF8/CF8M stainless steel, to duplex stainless steel. Pressure classes include PN10, PN16, PN25, and ANSI Class 150, 300, and 600. Higher classes (Class 900/1500) are available on request. Disc and seat materials can be matched to your media â EPDM for water, NBR for oil, Viton for chemical, or metal-to-metal for high-temperature steam.
For standard sizes (DN50âDN300, Class 150/300), our lead time is 15â20 working days for quantities up to 100 units. Larger orders or special materials take 20â30 days. We ship via FOB Tianjin, CIF, or DAP terms to any major port worldwide. Our logistics team handles all documentation (bill of lading, COO, packing list) to ensure smooth customs clearance for USA, Europe, Middle East, and Africa destinations.
Yes, absolutely. Free samples are available for qualified buyers (you pay shipping). We can also offer a trial order of 5â10 units at standard pricing. This allows you to verify fit, finish, and performance in your specific application. We have provided sample valves to over 40 engineering firms for field testing.
Our valves are manufactured under ISO 9001:2015 certified processes. They comply with API 594 (face-to-face dimensions and testing), CE/PED for European markets, and can be supplied with ATEX certification for explosive environments. Every valve undergoes hydrostatic shell and seat testing. Third-party inspection by BV, SGS, or TĂV is available as an option. We also provide Material Test Certificates (MTC) 3.1 per EN 10204.
Yes, we regularly customize valves for OEM partners. We can provide ANSI, DIN, JIS, AS, or GOST flange drilling, specialized coatings (epoxy, fusion-bonded, zinc phosphate), extended stems, and actuator mounting brackets. Our engineering team reviews each custom request within 24 hours. Minimum order quantities for OEM customization start at 50 units per size.
Simply visit our contact page or email us at info@thriveonvalve.com. To provide an accurate quote, we need: size (DN/NPS), pressure class, flange standard, body and seat material, quantity, and target delivery date. We typically respond with a competitive quotation within 4â8 hours during business days.
We provide a 12-month warranty covering manufacturing defects from the date of shipment. Our after-sales team offers remote technical support, replacement parts within 15 days, and field service coordination if needed. We have distributors and agents in the USA, Saudi Arabia, South Africa, and Italy for faster local support.
Join 500+ satisfied buyers worldwide. Get your factory-direct quote in 24 hours.
đ Risk-Free: Free samples available for qualified buyers | 12-month warranty | 100% factory tested
âł Limited-time: Free upgrade to EPDM seat (value $2.50/unit) on first orders over 100 units. *Offer valid until Dec 31, 2026.
Real feedback from procurement, engineering, and operations professionals globally.
"Thriveon's double flanged wafer check valve has been a game-changer for our pump discharge lines. The zero-leakage performance eliminated our backflow issue completely. We've ordered 300+ units and plan to standardize on Thriveon for all future projects."
"We were skeptical about sourcing valves from China after a bad experience. Thriveon changed our perspective. The valve quality is excellent â passed our TĂV inspection on the first try. Lead time was 18 days, not the 14 weeks we were quoted elsewhere."
"The OEM customization team at Thriveon is incredibly responsive. They adapted the flange drilling to match our legacy piping system perfectly. Cost savings of 28% vs. our previous supplier without any compromise on quality."
"We needed Class 300 double flanged check valves for a tight deadline. Thriveon delivered 120 units in 20 days â 4 weeks faster than any competitor quoted. Valves performed flawlessly during commissioning. Highly recommend."
"As a valve distributor, I've tested many factories. Thriveon stands out for consistent quality, honest communication, and reliable delivery. My customers are happy, and my repeat orders keep growing."
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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 
Trusted by Global Engineering & Procurement Teams
Thriveon has supplied over 50,000 valves to 30+ countries. Here's what our customers say.
đ Certifications & Compliance
đŹ Client Success Stories
"We replaced our previous European supplier with Thriveon for 24" Class 150 double flanged wafer check valves. Quality was equal or better, and we saved 31% on total landed cost. Lead time was just 18 days."
"Thriveon's engineering team helped us customize the disc coating for sour gas service. The valves passed all TĂV tests. Excellent technical support and fast response time."
"After suffering quality issues with low-cost suppliers, we switched to Thriveon for their DN200 PN16 check valves. Zero defects in the first 500 units. Now they're our preferred supplier."