01
Hand Lever Wafer Butterfly Valve – Resilient Seated Valve from China Suppliers and Factory, Sizes DN25-DN300
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 — consists of a reinforced back-up ring with vulcanized elastomer seat material. Cannot be deformed or displaced when mounted between pipe flanges. 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 — Cast-in actuator flange designed per ISO 5211. Accommodates all operator types: 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 PN10/PN16 / JIS / ANSI150 / AS Table D/E |
| 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)
| SIZE | A | B | C | D | L | d0 | P | H | Key b×l | UPPER FLANGE | ANSI 150 | DIN PN10/16 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| in | DN | K | E | z-d | g | h | D1 | n-Ød1 | D1 | n-Ød1 | |||||||||
| 1 1/2 | 40 | 145 | 75 | 33 | 42.4 | 32 | 12.6 | - | - | 3×16 | 77 | 50 | 4-7 | 35 | 3 | 98.5 | 4-16 | 110 | 4-18 |
| 2 | 50 | 161 | 80 | 42 | 52.6 | 32 | 12.6 | 9 | 10 | 3×16 | 77 | 50 | 4-7 | 35 | 3 | 120.5 | 4-19 | 125 | 4-18 |
| 2 1/2 | 65 | 175 | 89 | 44.7 | 64.5 | 32 | 12.6 | 9 | 10 | 3×16 | 77 | 50 | 4-7 | 35 | 3 | 139.5 | 4-19 | 145 | 4-18 |
| 3 | 80 | 181 | 95 | 45.2 | 78.8 | 32 | 12.6 | 9 | 10 | 3×16 | 77 | 50 | 4-7 | 35 | 3 | 152.5 | 4-19 | 160 | 8-18 |
| 4 | 100 | 200 | 114 | 52.1 | 104 | 32 | 15.77 | 11 | 12 | 5×19 | 90 | 70 | 4-9 | 55 | 3 | 190.5 | 8-19 | 180 | 8-18 |
| 5 | 125 | 213 | 127 | 54.4 | 123.3 | 32 | 18.92 | 14 | 14 | 5×19 | 90 | 70 | 4-9 | 55 | 3 | 216 | 8-22 | 210 | 8-18 |
| 6 | 150 | 226 | 139 | 55.8 | 155.6 | 32 | 18.92 | 14 | 14 | 5×19 | 90 | 70 | 4-9 | 55 | 3 | 241.5 | 8-22 | 240 | 8-23 |
| 8 | 200 | 260 | 175 | 60.6 | 202.5 | 45 | 22.1 | 17 | 17 | 5×19 | 125 | 102 | 4-12 | 70 | 35 | 298.5 | 8-22 | 295 | 8/12-23 |
| 10 | 250 | 292 | 203 | 65.6 | 250.5 | 45 | 28.45 | 22 | 22 | 8×28 | 125 | 102 | 4-12 | 70 | 3.5 | 362 | 12-25 | 350/355 | 12-23/27 |
| 12 | 300 | 337 | 242 | 76.9 | 301.6 | 45 | 31.6 | 22 | 24 | 8×28 | 140 | 102 | 4-12 | 70 | 3.5 | 432 | 12-25 | 400/410 | 12-23/27 |
| 14 | 350 | 368 | 267 | 76.5 | 333.3 | 45 | 31.6 | 22 | 24 | 8×28 | 140 | 102 | 4-12 | 70 | 3.5 | 476 | 12-29 | 460/470 | 16-23/27 |
| 16 | 400 | 400 | 309 | 86.5 | 389.6 | 51/72 | 33.15/38 | 24 | 24 | 10×50 | 175 | 140 | 4-18 | 100 | 4 | 540 | 16-29 | 515/525 | 16-27/30 |
| 18 | 450 | 422 | 328 | 106 | 440.5 | 51/72 | 38/42.86 | 27 | 27 | 10×50 | 175 | 140 | 4-18 | 100 | 4 | 578 | 16-32 | 565/585 | 20-27/30 |
| 20 | 500 | 480 | 361 | 131.8 | 491.6 | 64/82 | 41.15/45.72 | 32 | 32 | 10×50 | 175 | 140 | 4-18 | 100 | 4 | 635 | 20-32 | 620/650 | 20-27/33 |
| 24 | 600 | 562 | 459 | 152 | 592.5 | 70/82 | 50.65/53.98 | 36 | 36 | 2-16×60 | 210 | 165 | 4-23 | 130 | 5 | 749.5 | 20-35 | 725/770 | 20-30/36 |
| 28 | 700 | 624 | 520 | 163 | 695 | 66/82 | 55/63.35 | - | - | 2-18×63 | 300 | 254 | 8-18 | 200 | 55 | 863.5 | 28-35 | 840 | 24-30/36 |
| 30 | 750 | 660 | 539 | 165 | 744.3 | 66/82 | 55/63.35 | - | - | 2-18×63 | 300 | 254 | 8-18 | 200 | 55 | 914.5 | 28-35 | - | - |
| 32 | 800 | 672 | 591 | 188 | 794.7 | 66/82 | 55/63.35 | - | - | 2-18×63 | 300 | 254 | 8-18 | 200 | 55 | 978 | 28-41 | 950 | 24-33/39 |
| 36 | 900 | 720 | 656 | 203 | 864.7 | 118 | 75 | - | - | 2-20×100 | 300 | 254 | 8-18 | 200 | 55 | 1086 | 32-41 | 1050 | 28-33/39 |
| 40 | 1000 | 800 | 721 | 216 | 965 | 142 | 85 | - | - | 2-20×100 | 300 | 254 | 8-18 | 200 | 55 | 1200 | 36-41 | 1160/1170 | 28-36/42 |
More Details
Company Strength
Since 2007, Tianjin Guoji Valve Co., Ltd. (TGV) has established itself as a trusted manufacturer and exporter of high-quality valves, fittings, and comprehensive flow control solutions. Our extensive product range covers ball valves, gate valves, globe valves, check valves, butterfly valves, expansion joints, strainers, actuators, flanges, and pipe fittings—making us a reliable one-stop partner for industries such as oil and gas, petrochemicals, HVAC, and waterworks. What sets us apart is our unwavering focus on customer satisfaction: we combine strict quality control, competitive pricing, prompt responsiveness, and on-time delivery to ensure every order exceeds expectations. Whether you need standard products or customized support for complex projects, our team is ready to deliver solutions tailored to your specifications. Contact us now with your inquiry—let us provide you with detailed quotations, technical support, and a partnership built on reliability and performance.
Frequently Asked Questions (FAQ)
❓
What pressure ratings are available for the hand lever wafer butterfly valve?
The hand lever wafer butterfly valve is available in pressure ratings of PN10, PN16, 150PSI, 200PSI, and Class 150, making it suitable for a wide range of industrial and commercial piping systems.
❓
What seat materials are available, and how do I choose the right one?
Seat materials include EPDM, NBR, Buna, Viton, PTFE, Hypalon, Silicone, and Neoprene. The choice depends on the medium and operating conditions: EPDM is ideal for water and mild chemicals; NBR suits oil-based media; Viton is recommended for high-temperature or aggressive chemical applications; PTFE offers excellent chemical resistance across a broad range of fluids.
❓
What flange standards does this butterfly valve comply with?
The valve complies with multiple international standards including API609, EN593, EN558-1 Series 20, DIN3202 K1, and ISO5752 for face-to-face dimensions. Flange drilling conforms to EN1092 PN10/PN16, JIS, ANSI150, and AS Table D/E, ensuring broad compatibility with global piping systems.
❓
Can the seat be replaced in the field without removing the valve body?
Yes. The valve features a field-replaceable cartridge seat design. The seat isolates the body and stem from the flow medium, and can be replaced on-site without removing the entire valve from the pipeline, significantly reducing maintenance downtime and costs.
❓
What types of actuators are compatible with this valve?
The cast-in universal mounting flange is designed in accordance with ISO 5211 standard dimensions, making it compatible with all common operator types including 10-position handle kits, gear operators, electric actuators, and pneumatic actuators for flexible automation options.
❓
What industries and applications is this butterfly valve suitable for?
This wafer butterfly valve is widely used across HVAC systems, water supply and sewage treatment, food and beverage processing, chemical and petrochemical industries, power and utility plants, paper and pulp manufacturing, and marine applications, thanks to its wide material selection and multi-standard compliance.