Single Flange Butterfly Valve – Reliable Flow Control, Factory Direct Pricing
Eliminate costly overspecification and long lead times. Our single flange (wafer-style) butterfly valves deliver bubble-tight shut-off, full bidirectional sealing, and fast delivery for HVAC, water treatment, and industrial process lines — engineered for buyers who demand quality without the premium markup.
📥 Get Free Quote in 24h + Sample Available
✅ 10,000+ valves shipped to US & EU
✅ ISO 9001 / CE / RoHS certified
✅ 12-year track record
Why your current single flange butterfly valve supply chain is costing you more than you think
If you’re sourcing industrial butterfly valves for municipal water projects, chemical processing, or commercial HVAC systems, you’ve likely run into these common — and expensive — frustrations:
💸 1. Inflated pricing from intermediary layers
Distributors and trading companies add 30–50% markup before the valve reaches your dock. You end up paying for middlemen instead of engineering.
⚙️ 2. Inconsistent quality & material substitution
Cast iron bodies with substandard epoxy coating, incorrect disc materials, or undocumented rubber liners — leading to early failure and system downtime.
🚢 3. High shipping costs & container utilization
Many suppliers ship partially filled containers or use oversized packaging. You pay freight costs that are 20–35% higher than necessary for the same valve volume.
⏳ 4. Lead times that sabotage your project schedule
Standard delivery quoted at 60–90 days — and then delayed. When you’re managing a critical infrastructure timeline, every week of delay compounds costs.
🔧 5. Limited technical support & OEM flexibility
Need a custom stem length, special seat material, or a specific pressure class? Most suppliers lack the engineering depth to say “yes” without a huge premium.
📄 6. Compliance documentation gaps
Missing or incomplete test certificates, material traceability reports, and fire-safe certifications cause headaches for your QA team and regulators.
Result? You’re not just overpaying — you’re assuming risk that your project budget and timeline didn’t account for.
Why Thriveon’s single flange butterfly valve is the procurement win you’ve been looking for
At Ningjin Thriveon Valve Co., Ltd., we’ve been supplying high-performance single flange (wafer) butterfly valves to the US, Saudi Arabia, South Africa, Italy, and beyond for over 12 years. Our factory in Hebei, China, is built to deliver quality, speed, and flexibility — directly to you.
🏭
Powerful factory, direct pricing
Vertical integration from casting to assembly means you pay for the valve — not the middleman. Save 25–45% vs. traditional distributor pricing on equivalent spec.
✅
Certified quality assurance
ISO 9001, CE, RoHS — every single flange butterfly valve is hydrostatically tested and seat leakage tested. Full material traceability included with every shipment.
✏️
OEM/ODM engineering capability
Custom stem extensions, special seat materials (EPDM, Viton, PTFE), disc coatings, and pressure classes up to PN25/Class 150. Your spec, our execution.
🚀
High-speed delivery (15–35 days)
Standard production in 20–25 working days. Expedited service available for urgent orders. We consolidate containers intelligently to cut your freight cost.
🌍
Global compliance documentation
Full documentation package: pressure test certificates, material certificates, and declarations of conformity — ready for your QA review.
📞
Direct engineering support
Our in-house engineers (10+ years average experience) answer your technical questions within hours — not days. No runaround, just answers.
Technical specifications — single flange butterfly valve
| Parameter |
Detail |
| Valve type |
Single flange (wafer) butterfly valve, lug or wafer style |
| Size range |
DN50 – DN1200 (2″ – 48″) |
| Pressure rating |
PN6 / PN10 / PN16 / PN25 / Class 150 / Class 300 |
| Body material |
Ductile iron GGG50 / GGG40, Cast iron, CF8/CF8M stainless steel |
| Disc material |
Ductile iron nickel-plated, SS304, SS316, SS316L, duplex |
| Seat material |
EPDM, NBR, Viton, PTFE, Silicone — resilient or lined |
| Stem material |
SS410, SS420, SS304, SS316 |
| End connection |
Wafer (single flange) between flanges, or lug type |
| Face-to-face standard |
ISO 5752 / EN 558 / API 609 Table 1 |
| Top flange |
ISO 5211 (direct mounting for actuators) |
| Testing |
Hydrostatic 1.5x PN, seat leakage test 1.1x PN, bubble-tight |
| Certifications |
ISO 9001, CE, RoHS, WRAS (optional), FM (optional) |
stainless steel flanged butterfly valve mechanical butterfly valve pipe butterfly valve
Typical applications & industries
- HVAC & commercial buildings — chilled water, hot water, condenser water isolation
- Municipal water & wastewater — treatment plants, pumping stations, transmission mains
- Chemical & light industrial — corrosive fluid handling with PTFE/Viton seats
- Fire protection — line-size butterfly valves for deluge and sprinkler systems
- Irrigation & agriculture — large-diameter flow control for pivots and distribution
Trusted by engineering buyers across the globe
⚙️ Johnson Controls (US)
💧 Veolia Water (Saudi)
🏗️ L&T Engineering (India)
🔥 Viking Group (EU)
🛢️ PetroRabigh (KSA)
“We switched to Thriveon’s single flange butterfly valve for our Florida water treatment project. Saved 31% on unit cost and the documentation was perfect — ISO 9001 and material certs included. Lead time was 24 days instead of the 70 we were used to.”
— Michael R., Sr. Procurement Manager, Water Infrastructure (USA)
“The OEM support is outstanding. We needed a custom stem extension with a specific square drive for our actuator. Thriveon engineered it in 3 days and shipped ahead of schedule. Consistent quality across 3 shipments.”
— Ahmed S., Technical Director, HVAC Contracting (Saudi Arabia)
“Their single flange butterfly valve is the best value we’ve found in the market — ductile iron body, EPDM seat, full ISO 5211 top flange. We’ve standardized on Thriveon for all our commercial projects in Johannesburg.”
— Pieter V., Operations Manager, MEP Contractor (South Africa)
ISO 9001:2015
CE (PED 2014/68/EU)
RoHS Compliant
WRAS (Optional)
FM (Optional)
API 609
EN 558
Frequently asked questions about single flange butterfly valves
What is the difference between a single flange and a double flange butterfly valve?
A single flange (wafer) butterfly valve is clamped between two pipe flanges and held in place by flange bolts. It is lighter, more compact, and more cost-effective than a double flange valve. Double flange valves have flanges on both ends and are typically used for larger sizes or higher pressure classes. Single flange is ideal for DN50–DN1200 in HVAC, water, and general industrial service.
Can I get a single flange butterfly valve with a pneumatic or electric actuator?
Yes. All our valves feature the ISO 5211 top flange standard for direct mounting of pneumatic, electric, or hydraulic actuators. We can supply pre-assembled actuator-valve packages tested and calibrated to your control signal (4-20mA, on/off, etc.).
What seat materials are available for chemical service?
We offer EPDM (general water, wastewater), NBR (oil & fuel), Viton/FKM (aggressive chemicals up to 200°C), and PTFE (high corrosion resistance, low friction). For severe chemical or high-purity applications, we recommend PTFE-lined seats with a stainless steel disc.
How do you handle quality control before shipment?
Every valve undergoes hydrostatic shell test (1.5x rated pressure), seat leakage test (1.1x rated pressure, bubble-tight), and visual inspection of coating and dimensions. Random torque tests and material verification are performed per ISO 9001 procedures. Test reports and material certificates are included.
What is the typical lead time for a container order of single flange butterfly valves?
Standard production is 20–25 working days after confirmation of all technical details. For urgent orders, we can expedite to 15 working days. A full 20ft container (approx. 200–500 valves depending on size) typically ships within 30 days from order. We consolidate LCL shipments for smaller quantities.
Do you offer free samples for testing and qualification?
Yes. We provide free sample valves (customer pays shipping) for qualified buyers. You can test the valve under your operating conditions — pressure, temperature, cycle life — before placing a production order. This is a no-risk way to validate quality and performance.
What is the price range for a single flange butterfly valve DN200 (8 inch) ductile iron, EPDM?
Pricing depends on quantity, material grade, and required certifications. As a reference, a DN200 ductile iron wafer butterfly valve with EPDM seat and SS304 disc typically ranges between USD $18–$35 per unit FOB Qingdao for container quantities. Contact us for a firm quote based on your exact specification and volume.
What payment terms do you offer for international buyers?
We accept T/T (30% deposit, 70% against BL copy), L/C at sight, and for established buyers — open account terms after credit review. We also accept Western Union and PayPal for sample orders. All pricing is FOB, CIF, or DDP as agreed.
What our buyers say about our single flange butterfly valve
★★★★★
“Ordered 300 pcs DN150 for a school HVAC project in Texas. Valves arrived ahead of schedule, every one tested perfectly. The pricing was 40% lower than my previous US supplier. Will definitely reorder.”
— David L., Mechanical Contractor (USA)
★★★★★
“We’ve been buying from Thriveon for 3 years. Their single flange valve is our go-to for water distribution networks. Consistent quality, excellent documentation, and their team responds fast to technical questions.”
— Omar B., Procurement Lead, Utility Company (Saudi Arabia)
★★★★☆
“The OEM customization was what sold us. Needed a special SS316 disc with PTFE seat for a chemical plant. Thriveon delivered exactly to spec and the price was fair. Lead time was 26 days.”
— Johan D., Plant Engineer (South Africa)
★★★★★
“First time importing from China — I was nervous. But Thriveon made it easy. Clear communication, factory photos, third-party inspection arranged. Valves are in service and performing perfectly. Highly recommend.”
— Mark T., Project Manager, Municipal Water (Italy)
★★★★★
“We’ve standardized all our commercial projects on Thriveon’s single flange butterfly valve. Over 2,000 units installed, zero failures. That’s the kind of reliability you can build a reputation on.”
— Carlos M., VP Operations, MEP Firm (UAE)
Ready to reduce valve costs by 30–45% without compromising quality?
Get a firm quote, free sample, and technical datasheet within 24 hours. Your spec, our solution.
🔒 Free sample for qualified buyers
📄 Full documentation with every order
⏱️ 24/7 engineering support
David Xu
Senior Valve Engineer & Technical Advisor, Thriveon Valve
David has spent 14 years in the industrial valve industry — designing, testing, and sourcing butterfly valves, gate valves, and check valves for international clients. He has overseen more than 500 container shipments to 40+ countries and is a recognized voice on pipeline flow control and procurement strategy. He believes that transparency, quality, and speed should never be a premium — they should be the standard.
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South of Huanmadian Village Town, Ningjin County, Xingtai, Hebei Province, China
Trusted by engineering buyers across the globe