01
Pneumatic Actuated Butterfly Valve Suppliers in China - High-Quality Factory Direct Options Available
⚙ 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 | Wafer |
| 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
Looking for a reliable partner in valves and fittings? Tianjin Guoji Valve Co., Ltd. (TGV) has been delivering excellence since 2007. As a premier manufacturer and exporter, we offer a complete range of products—ball valves, gate valves, globe valves, check valves, butterfly valves, expansion joints, strainers, actuators, flanges, pipe fittings, and more. Our solutions serve critical industries, including oil and gas, petrochemicals, HVAC, and waterworks. What makes us different? Uncompromising quality control, competitive pricing, rapid response, and on-time delivery—every time. From standard components to customized system solutions, we are equipped to support your projects with precision and dedication. Ready to discuss your requirements? Send us your inquiry now—let us show you the value of working with a partner who truly delivers.
❓ Frequently Asked Questions (FAQ)
Q
What is a wafer butterfly valve and how does it work?
A wafer butterfly valve is a quarter-turn valve designed to regulate or isolate flow in a pipeline. It features a disc mounted on a rotating stem; when the disc is turned 90°, it either allows full flow or completely shuts off the medium. The wafer design is clamped between two pipe flanges, making it compact and lightweight compared to lug or flanged types.
Q
What seat materials are available for this butterfly valve?
We offer a wide range of seat materials to suit different media and operating conditions, including EPDM, NBR (Buna), Viton, PTFE, Hypalon, Silicone, and Neoprene. The correct seat material should be selected based on the fluid type, temperature, and pressure requirements of your application.
Q
Which international standards does this valve comply with?
Our wafer butterfly valves comply with multiple international standards, including API 609, EN 593, EN 558-1 Series 20, DIN 3202 K1, and ISO 5752 for face-to-face dimensions. Flange drilling conforms to EN1092, JIS, ANSI 150, and AS Table D/E standards. The actuator mounting flange meets ISO 5211 requirements.
Q
What types of actuators are compatible with this valve?
The valve features a universal ISO 5211 mounting flange that is compatible with a wide range of operators, including 10-position handle kits, gear operators, electric actuators, and pneumatic actuators. This standardized design ensures easy interchangeability and flexibility for various automation requirements.
Q
What industries and applications is this butterfly valve suitable for?
These valves are widely used across many industries, including HVAC systems, water supply and sewage treatment, food and beverage processing, chemical and petrochemical plants, power generation and utilities, paper and pulp manufacturing, and marine applications. The broad range of material options makes them suitable for both clean and aggressive media.
Q
Can the seat be replaced in the field, and what are the benefits?
Yes, the valve features a field-replaceable cartridge seat design. The seat consists of a reinforced back-up ring with vulcanized elastomer material that cannot be deformed or displaced during installation or operation. This design extends valve service life, reduces maintenance downtime, and lowers the total cost of ownership by allowing seat replacement without removing the entire valve body.