Cut procurement costs by 22-35% without sacrificing API 609 compliance. OEM/ODM designs delivered in 30 days. Zero-defect guarantee on every double flange type butterfly valve.
✅ ISO 9001 · CE · API 609 · 10+ years serving US & Saudi markets
"We selected a low-cost supplier, but after adding compliance modifications and expedited shipping, our total landed cost was 43% higher than the quoted price." — Feedback from a Texas-based EPC contractor.
A major Midwest water treatment plant reported 12% field failure rate on imported double flange butterfly valves within the first 6 months, leading to costly emergency shutdowns.
With global supply chain volatility, 62% of procurement officers say late deliveries are their top concern. Standard lead times of 60-90 days often stretch to 120+ days without notice.
Documentation errors, missing material certifications, or incorrect flange drilling patterns cause weeks of delays in project approval and installation.
We don't just sell valves. We provide a certified, on-spec, on-time flow control solution that eliminates the headaches you've been tolerating.
Every valve is independently tested and certified. No documentation gaps, no compliance risks. Full material traceability from foundry to final assembly.
Standard production in 25-35 days for sizes DN50-DN1200. Need it faster? Our expedited program ships in 15 days — without premium surcharges.
Each double flange type butterfly valve undergoes rigorous pressure testing per API 598. Zero-defect policy — if a valve fails, we replace it and cover your freight.
Need special coating, extended stem, or actuator mounting? Our engineering team designs and delivers custom configurations for chemical, marine, and HVAC systems.
Warehouses in Tianjin, Shanghai, and Ningbo. We manage all shipping documentation, including FDA, CE, and RoHS certifications for hassle-free customs clearance.
When you email us, you get a response from a senior engineer with 10+ years of experience — not a sales script. Technical support is included with every purchase.
| Parameter | Standard Range | Available Options |
|---|---|---|
| Size Range | DN50 – DN1200 (2" – 48") | Custom sizes up to DN2400 |
| Pressure Rating | PN10 / PN16 / PN25 | ANSI 150 / ANSI 300 (Class 150/300) |
| Body Material | Ductile Iron GGG50 (EN-JS1050) | WCB, CF8, CF8M (Stainless Steel) |
| Disc Material | Ductile Iron + Nylon Coated | SS304, SS316, Duplex SS, Aluminum Bronze |
| Seat Material | EPDM (Standard) | NBR, Viton, PTFE, Silicone, Hypalon |
| Flange Standard | EN 1092-1 (PN10/PN16) | ANSI B16.5, AS 2129, JIS B2220 |
| Face-to-Face | EN 558 (Series 14) | API 609 Table 1, ISO 5752 |
| Test Pressure (Shell) | 1.5 x PN (min 24 bar) | Per API 598 / EN 12266 |
| Test Pressure (Seat) | 1.1 x PN (min 17.6 bar) | Per API 598 / EN 12266 |
| Temperature Range | -20°C to +120°C (EPDM) | -40°C to +200°C (Viton/PTFE) |
| Actuator Mounting | ISO 5211 (Top Flange) | Pneumatic, Electric, Hydraulic, Lever |
| Certifications | ISO 9001:2015, CE, API 609 | FDA, RoHS, WRAS, UL (on request) |
double flanged butterfly valve double flanged short pattern butterfly valve flange type butterfly valve
Used in raw water intake, sludge handling, and filtration systems. Our resilient-seated design provides bubble-tight shut-off even after 50,000+ cycles.
Installed in chiller plants and cooling towers across commercial buildings in Dubai and Singapore. Zero leakage at 16 bar operating pressure.
Approved for use in firewater systems and utility lines at Saudi Aramco and ADNOC facilities. Full compliance with API 609 Category A.
Stainless steel disc + PTFE seat configuration handles aggressive media like caustic soda and acids. Used by BASF and Dow Chemical suppliers.
"We replaced our previous European supplier with Thriveon. The double flange butterfly valves arrived 3 weeks ahead of schedule and passed all NDT tests on the first try. We've standardized on Thriveon for all our water projects in Africa."
— David M., Project Director · Cape Town, South Africa
"The OEM customization process was smooth. We needed a special 7-inch flange drilling pattern and they delivered 48 units in 28 days. The quality is consistent with what we used to get from Japan, at a much better price."
— Luis R., Procurement Manager · Texas, USA
"We've been using Thriveon's double flange valves for 3 years across 5 projects. Zero failures, zero leaks. Their technical team responds within 2 hours, even when we need updated material certs for client submittals."
— Ahmed A., Mechanical Engineer · Jeddah, Saudi Arabia
A double flange type butterfly valve has flanges on both ends that bolt directly to pipe flanges, providing full structural support and allowing for use at higher pressures (up to PN25/ANSI 300). A lug type valve has threaded inserts that allow for dead-end service but typically at lower pressure ratings. For mainline isolation in water and industrial systems, double flange is preferred.
Standard lead time is 25-35 working days for sizes DN50-DN1200. For urgent projects, we offer an express program at 15 working days with no extra charge for order quantities above 20 units. Shipping to US ports takes approximately 20-25 days via sea freight.
Yes. We manufacture double flange valves compatible with ANSI B16.5, AS 2129, JIS B2220, and EN 1092-1 flanges. Please specify your required standard when requesting a quote. Our engineering team can also accommodate special drilling patterns for retrofit projects.
We accept TT (Telegraphic Transfer), LC (Letter of Credit) at sight, and for established companies, 30% deposit + 70% against BL copy. For orders under $5,000, we also accept PayPal (with 3.5% fee). We can provide DP (Documents against Payment) terms for verified companies with a minimum of 1 year in business.
Every double flange type butterfly valve undergoes 3-stage inspection: (1) Raw material verification with mill certificates, (2) In-process dimensional check and shell test per API 598, (3) Final seat leakage test and coating inspection. We provide free MTC (Material Test Certificates) and NDT reports upon request.
For most US orders, we recommend sea freight to major ports (Los Angeles, Houston, New York) via FOB Tianjin or CIF destination. For urgent or smaller orders, air freight (DDP available) is typically 5-7 days. We handle all export documentation, including Fumigation Certificate, Bill of Lading, and Certificate of Origin.
Absolutely. We provide 12-month warranty against manufacturing defects from the date of shipment. Our technical team is available via email (info@thriveonvalve.com) and WhatsApp for installation support. We also offer free replacement for any valve that fails due to material or workmanship issues within the warranty period.
Yes. We offer free sample valves (DN50-DN200) for qualified buyers. You only pay for shipping. The sample cost will be deducted from your first bulk order. Contact our sales team to arrange a sample that matches your exact specifications.
Stop overpaying for inconsistent quality. Get a certified, custom-engineered double flange type butterfly valve delivered to your site on time.
Or call us directly. Our engineers are available Monday-Friday, 8:00 AM - 6:00 PM (CST).
"We've ordered over 200 double flange valves from Thriveon for our water distribution projects in California. The quality consistency is remarkable. Every valve is pressure-tested and the paperwork is always complete. Saved us 30% compared to our previous supplier."
— James T., Senior Buyer · California Water Authority, USA
"The OEM team at Thriveon customized the actuator mounting bracket for our pneumatic system. The valves arrived perfectly matched to our actuators. Zero modification needed on-site. Their engineering support is world-class."
— Carlos M., Automation Engineer · Monterrey, Mexico
"We use Thriveon valves in our fire-fighting systems for oil terminals. The EPDM seats provide bubble-tight shut-off even after years of standby. Their delivery is always on time, and the pricing is transparent with no hidden fees."
— Saeed H., Maintenance Manager · Abu Dhabi, UAE
"I was skeptical about switching to a Chinese supplier, but Thriveon changed my mind. The double flange valves meet our spec perfectly, the certifications are genuine, and the communication is excellent. We've placed 3 repeat orders so far."
— Robert K., Project Manager · Chicago, USA
"Thriveon's logistics team handled the entire shipping process for our project in Johannesburg. The valves arrived 2 weeks early and all documentation was compliant with South African customs. We are very satisfied with the service."
— Pieter V., Supply Chain Director · Johannesburg, South Africa
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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 
