Product Details
The Butterfly Swing Wafer Type Check Valve is a compact wafer check valve for one-way flow control in water supply, petrochemical, food processing, medicine, textile, paper-making, and light industrial systems. The spring-assisted dual-disc structure helps reduce reverse flow and supports reliable sealing in compatible pipeline service.
Features
- Compact body with light weight and convenient maintenance.
- Paired disc and spring structure closes quickly and helps prevent reverse flow.
- Short face-to-face length, rigid body structure, and low flow resistance.
- Suitable for horizontal or vertical pipeline installation when installed according to flow direction.
- Designed for water supply, sewage, seawater, air, food, medicine, oil, acid, and compatible media service.
Technical Data
| Item | PN 1.0 | PN 1.6 | Unit |
|---|---|---|---|
| Nominal Diameter | 50 (2") – 700 (28") | 50 (2") – 450 (18") | mm (inch) |
| Nominal Pressure | 1.0 | 1.6 | MPa |
| Sealing Test Pressure | 1.1 | 1.76 | MPa |
| Shell Test Pressure | 1.5 | 2.4 | MPa |
| Working Temperature | -15 to +150 | -15 to +150 | deg C |
| Suitable Medium | Fresh water, sewage, sea water, air, food, medicine, oils, acids, etc. | Fresh water, sewage, sea water, air, food, medicine, oils, acids, etc. |
Main Parts Material
| Part | Material | Material Code | Working Temperature |
|---|---|---|---|
| Body | Cast Iron | Z | |
| Body | Ductile Iron | Q | |
| Body | Carbon Steel | C | |
| Body | Stainless Steel | P | |
| Body | Aluminum Bronze | T | |
| Disc | Plated Ductile Iron | 1 | |
| Disc | Aluminum Bronze | 2 | |
| Disc | Stainless Steel | 3 | |
| Disc | CF8M Stainless Steel | 5 | |
| Disc | CF3M Stainless Steel | 7 | |
| Stem | Stainless Steel | ||
| Rubber Gasket | EPDM | X3 | -46 to +121 deg C; short intermittent -50 to +150 deg C |
| Rubber Gasket | Neoprene | X4 | -29 to +99 deg C; short intermittent -35 to +113 deg C |
| Rubber Gasket | NBR | X5 | -23 to +82 deg C; short intermittent -23 to +93 deg C |
| Rubber Gasket | VITON | X7 | -23 to +150 deg C |
| Spring | Stainless Steel |
