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Stainless Steel Wafer Butterfly Valve for Multiple Applications - China Suppliers and Factory Direct Sales
⚙️ 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
Tianjin Guoji Valve Co., Ltd. (TGV) has built a strong reputation as a reliable manufacturer and exporter of premium valves, fittings, and related accessories. Our comprehensive product offering includes ball valves, gate valves, globe valves, check valves, butterfly valves, expansion joints, strainers, actuators, flanges, and pipe fittings—all designed to meet the demanding requirements of sectors such as oil and gas, petrochemicals, HVAC, and waterworks. We differentiate ourselves through a steadfast commitment to quality, competitive pricing, fast response times, and strict adherence to delivery schedules. Every product reflects our dedication to providing complete, dependable solutions tailored to our customers' operational needs. We look forward to hearing from you—send us your inquiry today, and let us demonstrate how our expertise and service can add value to your next project.
❓ Frequently Asked Questions
Q What is a wafer butterfly valve and how does it work?
A wafer butterfly valve is a quarter-turn rotational valve designed to be sandwiched between two pipe flanges. It uses a disc mounted on a stem that rotates 90° to open or close the flow path. The disc and seat are the only parts in contact with the medium, making it ideal for both on/off and throttling applications.
Q What seat materials are available for the wafer butterfly valve?
We offer a wide range of seat materials to suit various media and operating conditions, including EPDM, NBR, Buna, Viton, PTFE, Hypalon, Silicone, and Neoprene. The appropriate material depends on the fluid type, temperature, and pressure requirements of your application.
Q What pressure ratings does this butterfly valve support?
The wafer butterfly valve supports pressure ratings of PN10, PN16, 150 PSI, 200 PSI, and Class 150, making it suitable for a broad range of industrial and commercial piping systems.
Q Which flange standards is this valve compatible with?
The valve is compatible with multiple international flange drilling standards, including EN1092 (PN6/PN10/PN16), JIS 5K/10K, ANSI 150, AS Table D/E, and SANS. The face-to-face dimensions comply with API609, EN593, EN558-1 Series 20, DIN3202 K1, and ISO5752.
Q Can the seat be replaced in the field without removing the valve body?
Yes. The valve features a field-replaceable cartridge seat design. The reinforced back-up ring with vulcanized elastomer seat can be replaced without special tools, minimizing downtime. The cartridge design also prevents deformation of the seat during valve cycling.
Q What types of actuators can be mounted on this butterfly valve?
The valve features a universal ISO 5211 mounting flange that accommodates all common operator types, including 10-position handle kits, gear operators, electric actuators, and pneumatic actuators — providing maximum flexibility for automation and manual operation.