Eliminate fugitive emissions and unplanned downtime. Our flanged butterfly valves meet API 609, ISO 5211, and ASME B16.5 standards — with 30% faster lead times than industry average. Designed for chemical, HVAC, water treatment, and oil & gas applications.
✓ 2,300+ valves shipped to US buyers in 2025 | ✓ 98% on-time delivery
A substandard flange type butterfly valve can leak VOCs or hazardous fluids, leading to OSHA fines and environmental penalties. In 2024, US chemical plants averaged $187,000 in leakage-related penalties per facility.
Low-grade disc and seat materials wear out in 12–18 months in continuous operation. With labor and downtime, replacing a single 12-inch flanged butterfly valve costs $2,400–$4,800 — often more than the valve itself.
Waiting 16–24 weeks for a high-performance butterfly valve from Europe or domestic suppliers forces costly project delays. Every week of downtime in a mid-size water treatment plant equals $12,000 in lost revenue.
Without proper material certification and hydrostatic test reports, you risk valve failure during commissioning. 1 in 5 imported valves fail to meet ASME face-to-face dimensions, causing flange bolt alignment issues.
Non-standard ISO 5211 top flanges make it impossible to mount pneumatic or electric actuators — forcing you to buy a complete new valve assembly instead of simply upgrading the automation.
Our resilient-seated and triple-offset flanged butterfly valves are designed to achieve zero leakage in both directions. The precision-machined disc and seat interface eliminates fugitive emissions — even after 10,000+ cycles.
Every flange type butterfly valve is manufactured to strict ASME dimensions — 150#, 300#, and 600# classes. You get perfect bolt-hole alignment and face-to-face accuracy, reducing installation time by 40%.
All our butterfly valves with flanged ends feature standard ISO 5211 mounting pads. Add a pneumatic actuator, electric actuator, or gearbox off-the-shelf — no adapter plate required.
We provide EN 10204 3.1 material certificates, pressure test reports, and PMI (Positive Material Identification) documentation. Every flanged butterfly valve is fully traceable from melt to finished product.
Our factory in Hebei, China, operates 6 production lines dedicated to flange type butterfly valves. Standard delivery is 4–6 weeks (vs. 12–20 weeks for European suppliers). Express service available for urgent orders.
Our engineers (10+ years average experience) help you select the right disc material, seat elastomer, and coating. Send us your P&ID or valve schedule — we'll respond with a free compatibility report within 48 hours.
| Parameter | Available Range | Standard / Option |
|---|---|---|
| Size Range | 2" – 48" (DN50 – DN1200) | Custom sizes available upon request |
| Pressure Class | ASME 150#, 300#, 600# | PN6 – PN40 also available |
| Face-to-Face | API 609 Table 1 & Table 2 | ISO 5752 Series 20 (wafer & lug) |
| Flange Standard | ASME B16.5 / B16.42 | EN 1092-1, JIS B2220 optional |
| Design Type | Concentric, Double Offset, Triple Offset | Resilient seated / Metal seated |
| Disc Materials | CF8M (316SS), CF8 (304SS), Duplex 2507, Monel, Hastelloy | Coated options: Nylon, Halar, PTFE |
| Seat Materials | EPDM, NBR, Viton® FKM, PTFE, RTFE, Metal | FDA-grade available for food & pharma |
| Top Flange | ISO 5211 – F05 to F60 | Direct actuator mounting |
| Temperature Range | -40°C to +260°C (depending on seat) | Cryogenic (-196°C) version available |
| Testing | API 598 / ISO 5208 Rate A (Zero Leakage) | Hydrostatic, Pneumatic, Fugitive Emission |
| Certifications | ISO 9001, CE/PED, ATEX, SIL 3, Fire Safe API 607 | CRN (Canada) available |
⬆️ All flange type butterfly valves include material certification & hydrostatic test report as standard.
Our PTFE-lined flanged butterfly valve handles HCl, NaOH, and aggressive solvents at 150°C. Installed at a Texas chemical plant — zero leakage after 18 months of continuous service.
Used in 48-inch raw water main lines for a Florida municipal plant. EPDM-seated flange type butterfly valve rated for 100,000+ cycles — 35% lighter than gate valve alternative.
Triple offset butterfly valve with flanged ends in 300# class for hydrocarbon isolation. API 607 fire safe design + SIL 3 rated for emergency shutdown (ESD) systems.
Stainless steel flanged butterfly valve with extended bonnet for -196°C service. Installed at a US LNG export terminal — certified to BS 6364.
FDA-grade EPDM seat and mirror-polished 316L disc. Our flange type butterfly valve meets 3-A sanitary standards and is CIP/SIP compatible.
A wafer type butterfly valve is clamped between two pipe flanges using long bolts, while a flange type butterfly valve has integral flanges that bolt directly to the pipe flanges. Flanged valves are preferred for larger sizes (≥12"), high-pressure classes, and applications requiring easy removal from the pipeline without disturbing adjacent flanges.
We offer ASME 150#, 300#, and 600# as standard, with PN6 to PN40 also available. For higher-pressure applications, our triple offset flanged butterfly valve can handle up to ASME 900#. Contact our engineering team for specific pressure/temperature ratings.
flange butterfly valve flanged butterfly valve flange in butterfly valve
Absolutely. We offer CF8M (316SS), duplex 2507, Hastelloy C276, Monel, and titanium discs. Coatings include nylon (Rilsan), Halar ECTFE, PTFE, and PFA. Send us your media composition and operating temperature — we'll recommend the optimal material pairing at no cost.
Yes, we supply fully assembled actuated flange type butterfly valves — including pneumatic (double-acting / spring-return), electric (on/off or modulating), and gearbox-operated versions. All actuators are pre-mounted and tested on the valve before shipment. Request a free actuator sizing with your quote.
Standard flange type butterfly valve sizes (2"–24", 150#) ship in 4–6 weeks. Larger sizes or special alloys may require 8–10 weeks. We offer express service (2–3 weeks) for urgent orders — just specify at the time of inquiry.
Every flanged butterfly valve ships with: EN 10204 3.1 material certificate, hydrostatic test report, dimensional inspection report, and Certificate of Conformance. Additional documents (PMI report, NDE reports, fire safe certificate, SIL assessment report) are available upon request.
All flange type butterfly valves undergo 100% inspection per API 598: shell test at 1.5x rated pressure, seat test at 1.1x rated pressure, and closure torque check. Random samples receive fugitive emission testing (ISO 15848) and cycle testing. Our QC lab is equipped with coordinate measuring machines (CMM) and hardness testers.
Yes, we provide free samples for qualified engineering companies and EPC contractors. You pay only the shipping cost. Sample valves are fully tested and come with complete documentation. Request your free sample today.
"We've standardized on Thriveon's flanged butterfly valves for all our plant expansions. The consistency in quality from batch to batch is outstanding — and the technical support team genuinely understands our applications. A true partner, not just a supplier."
"The 3-week express delivery saved our project. We had a critical line shutdown and needed 8-inch flange type butterfly valves fast. Thriveon delivered in 18 days — fully documented and ready to install. Highly recommend for emergency or turnaround projects."
"We switched from a domestic supplier to Thriveon for our HVAC chilled water system. The flanged butterfly valves were 40% more cost-effective, and the EPDM seats have shown zero degradation after 2 years of service. Plus, the ISO 5211 flange made actuator retrofit simple."
"The material traceability and documentation package is world-class. We're a top-tier EPC contractor — our clients demand full pedigree on every critical valve. Thriveon's flange type butterfly valve documentation meets even the strictest project specifications."
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+86-311-86935302
+86-311-86935302
Email Us:
info@thriveonvalve.com
South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China 
Trusted by Engineering & Procurement Teams Across North America
"We replaced a European brand with Thriveon's 12-inch flanged butterfly valve on our cooling water system. Saved 37% per valve and delivery was 5 weeks — less than half the lead time we were quoted elsewhere. No leaks, no issues."
"The ISO 5211 top flange made actuator integration seamless. We automated 45 flange type butterfly valves in our water treatment plant with zero modification. The material traceability documentation was complete and audit-ready."
"We ordered 6-inch triple offset butterfly valves with flanged ends for a refinery expansion. The 3.1 material certs and PMI reports arrived with the shipment. Valve performed perfectly during hydrotest — zero fugitive emissions."
Certifications & Compliance