Fire Protection Wafer Type Butterfly Valve
| Product Name | Fire Protection Wafer Type Butterfly Valve |
| Specifications | Nominal diameter: DN50–300 | Pressure: PN10/16/25 | Temp: 0–80°C |
| Category | Fire Protection Control Valve |
| Manufacturer | Shandong Lede Machinery Co., Ltd. |
Product Introduction
The wafer type butterfly valve is a compact, lightweight flow control valve designed for fire protection systems. It installs between two flanges and is operated by a handle or gear actuator for rapid open/close switching.
Features
- ✓The self-sealing center-line butterfly valve is a newly designed and innovative valve with a micro-interference between the rubber disc and valve channel, which can decrease abrasions to the sealing face, increasing the service life of valves.
- ✓With a self-sealing structure, the sealing property of the butterfly valve is proportional to fluid pressure, allowing the valves to withstand high pressures.
- ✓The sealing lip on the rubber disc can remove mud and dirt when the valve closes.
- ✓The outer and inner surfaces of the wafer valve are coated in a high quality epoxy powder, so the paint coat is complete and even, making the valve safe for use in the food, beverage and pharmaceutical industries.
Wafer Type Butterfly Valve — Specifications and Parts List
| No. | Names of Parts | Materials |
|---|---|---|
| 1 | Body | Ductile iron |
| 2 | Gasket | EPDM |
| 3 | Scare hole washer | Carbon steel hot galvanizing or stainless steel |
| 4 | Bolt | Carbon steel hot galvanizing or stainless steel |
| 5 | Spring washer | Carbon steel hot galvanizing or stainless steel |
| 6 | Flat washer | Carbon steel hot galvanizing or stainless steel |
| 7 | Plug | EPDM |
| 8 | Bearing bush | Bronze or POM |
| 9 | Driven shaft | Stainless steel 304 or 1Cr17Ni2 or Cr13 |
| 10 | Disc | Ductile iron + EPDM |
| 11 | Bearing bush | Bronze or POM |
| 12 | Actuating shaft | Stainless steel 304 or 1Cr17Ni2 or Cr13 |
| 13 | Bearing bush | Bronze or POM |
| 14 | O-rings | EPDM or NRM |
| 15 | O-rings | EPDM or NRM |
Actuating Device
A level handle D71X, gear operator D371X, electric actuator D971X, and pneumatic actuator D671X can be installed on the valve as per customer requirements.
Technical Data
| Parameter | Specification |
|---|---|
| Nominal Diameter | DN50–300 |
| Nominal Pressure | PN 10/16/25 |
| Temperature Range | 0–80 °C |
| Valve Standard | EN593 |
| Face to Face Length | EN558-1 ISO5752 |
| Flange Standard | EN1092-2 ISO7005-2 |
| Test Standard | EN12266 |
| End Connection | Wafer (between flanges) |
| Body Material | Ductile Iron |
| Disc Material | Ductile Iron + EPDM |
| Seat/Gasket Material | EPDM |
| Shaft Material | Stainless Steel 304 / 1Cr17Ni2 / Cr13 |
| Actuator Options | D71X lever / D371X gear / D971X electric / D671X pneumatic |
Dimension Drawing
