Unlined Diaphragm Valve
Working Principle:
The unlined diaphragm valve is a special form of shut-off valve. The opening and closing part is a diaphragm. The diaphragm is a kind of elastic material. It is connected to the valve stem with bolts. It moves up and down during operation. When the diaphragm rises, the valve Open, when the diaphragm is lowered, the valve closes.
The most prominent feature of the unlined diaphragm valve is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that the valve stem, valve disc and other parts above the diaphragm are not corroded by the medium. The packing sealing structure is omitted, and there is no leakage of the medium.
Application:
The unlined diaphragm valve is specially used to control non-corrosive or general corrosive medium.
Technical Indicators:
| Size |
DN25-DN100 |
| Temperature |
-5℃≈300℃ |
| Pressure |
PN16 |
| Body Material |
Ductile Iron, Cast Steel, Stainless Steel |
| Disc material |
cast iron, cast steel, stainless steel |
| Bonnet material |
cast iron, cast steel, stainless steel |
| Stem material |
cast steel, stainless steel |
| Diaphragm |
Rubber |
| Lining |
Unlined |
| Connection method |
Flange |
| Scope of application |
water, oil, gas, steam, etc. |
Outline Drawing:
Product Showing:
