Specification
Manufacturer of PVD-50 exhaust and sanitary blast valve is Temet, Helsinki Finland.
The PVD-50 exhaust and sanitary blast valve comprises a special heat resistant steel pressure disk mounted on a stainless steel spindle within cast steel valve body and casing. The valve disk is held open by the gas flow and closes in response to the blast load. For vent pipe application the valve disk is spring-loaded to keep the pressure disk in the open position during normal operation.