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China Suppliers Factory Wafer Butterfly Valve - Two Piece Shaft No-Pin Design, DN25-DN1200
⚙️ Features
✔Bubble-tight shut-off at full pressure rating
✔The seat and the disc are the only two valve parts in contact with the medium.
✔Superior design for abrasive and erosive media.
✔Replaceable cartridge seat
The replaceable seat consists of a reinforced back-up ring, on which the elastomer seat material is vulcanized. When mounting the valve between the pipe flanges this stable seat cannot be deformed or displaced. The cartridge design also prevents deformation when the valve is cycled, such as stretching and bending of the elastomer in front of the moving disc.
✔Large number of material combinations available.
✔Standardized actuator flange for easy operator interchangeability.
✔Top bushing absorbs side thrust loads.
✔Hub seal provided by preloaded contact between flatted seat surface and disc hub area for positive sealing at all disc positions.
✔One-piece wafer thin disc stem gives the very minimum obstruction to flow.
✔Field replaceable seat isolates the body and stem from the flow.
✔Molded-in O-rings provides flange sealing and eliminates need for gaskets.
✔Universal Mounting Flange
The cast-in actuator flange is universally designed in accordance with ISO 5211 standard dimensions. The mounting flange can accommodate all types of operators such as: 10-position handle kits, gear operators, electric actuators, and pneumatic actuators.
🔩 Materials Of Main Parts
| ITEM | PART NAME | MATERIAL |
|---|---|---|
| 1 | Body Material | Cast iron / Ductile iron / CF8 / CF8M / WCB / Duplex / Al-Bronze / Aluminium Etc. |
| 2 | Seat Material | EPDM / NBR / Buna / Viton / PTFE / Hypalon / Silicone / Neoprene Etc. |
| 3 | Stem Material | 45# / SS420 / SS410 / SS416 / SS316 / SS304 / Duplex stainless steel Etc. |
| 4 | Disc Material | DI+Ni, CF8, CF8M, CF3M, Duplex SS, Al-Bronze, DI+Nylon, DI+PTFE, DI Epoxy Etc. |
| 5 | Hand Lever | Malleable iron / Stamping steel / Aluminum / Stainless Steel |
| 6 | Bushing | PTFE / Bronze |
| 7 | O Ring | NBR / EPDM / VITON |
📋 Valve Standard
| Category | Details |
|---|---|
| Type | Lugged |
| Face to Face | API609, EN593, EN558-1 Series 20, DIN3202 K1, ISO5752 |
| Flange Drilling | EN1092 PN6 / PN10 / PN16 / JIS 5K / 10K / ANSI150 / AS Table D/E / SANS |
| Mounting Flange | ISO5211 |
| Pressure Rating | PN10 | PN16 | 150PSI | 200PSI | Class 150 |
| Application | HVAC, Water Supply & Sewage, Food & Beverage, Chemical / Petrochemical Processing, Power and Utilities, Paper and Pulp, Marine |
📐 Dimensions (mm)
🔍 More Details
🏭 Company Strength
⭐Tianjin Guoji Valve Co., Ltd. (TGV) has been a trusted name in valve manufacturing and export since 2007. We specialize in a broad spectrum of products—ball valves, gate valves, globe valves, check valves, butterfly valves, expansion joints, strainers, actuators, flanges, and pipe fittings—offering complete solutions for the oil and gas, petrochemical, HVAC, and waterworks sectors. Our commitment to strict quality control, competitive pricing, fast responsiveness, and on-time delivery ensures that every order meets the highest standards. Whether you need standard components or custom-engineered solutions, we are equipped to support your project with reliability and expertise. Ready to move forward? Simply send us your inquiry—we'll respond promptly with detailed information, a competitive quote, and the dedicated service you deserve.
❓ Frequently Asked Questions
Q What is the pressure rating of this lugged butterfly valve?
This lugged butterfly valve is rated for PN10, PN16, 150PSI, 200PSI, and Class 150. It provides bubble-tight shut-off at full pressure rating, ensuring reliable sealing performance across all supported pressure ranges.
Q What seat materials are available for this butterfly valve?
A wide range of seat materials are available to suit different media and applications, including EPDM, NBR, Buna, Viton, PTFE, Hypalon, Silicone, and Neoprene. The replaceable cartridge seat design allows for easy field replacement without dismantling the entire valve.
Q Which flange drilling standards does this valve comply with?
This valve supports multiple international flange drilling standards, including EN1092 PN6/PN10/PN16, JIS 5K/10K, ANSI 150, AS Table D/E, and SANS. Face-to-face dimensions comply with API609, EN593, EN558-1 Series 20, DIN3202 K1, and ISO5752.
Q What types of actuators are compatible with this valve?
The cast-in actuator mounting flange is designed to ISO 5211 standard, making it universally compatible with 10-position handle kits, gear operators, electric actuators, and pneumatic actuators. This ensures easy operator interchangeability on-site.
Q What industries or applications is this valve suitable for?
This lugged butterfly valve is suitable for a wide range of industries including HVAC, water supply and sewage, food and beverage, chemical and petrochemical processing, power and utilities, paper and pulp, and marine applications. Its superior design makes it ideal for both abrasive and erosive media.
Q Can TGV provide custom material combinations or engineered solutions?
Yes. Tianjin Guoji Valve Co., Ltd. (TGV) offers a large number of material combinations for the body, seat, stem, disc, and other components. Whether you require standard configurations or custom-engineered solutions for specific project requirements, TGV can accommodate your needs with competitive pricing and reliable on-time delivery.