|Size||Available In Many Sizes|
Advantages: This design of valve maintains fluid tightness without the aid of wedging action. These valves are used for saturated and super heated steam.
Feature / Application: Popular in steam applications as the energised disc design handles thermal expansion without sticking like wedge gate valves. Another advantage is lower torque then wedge gate valves especially in venturi (Ferranti) reduced bore configuration. Parallel slide valves consist of two parallel gates that are energised against the seat at all times by springs or a wedging spreader bar between the two gates. No mechanical stress is exerted between the discs, and the valve is not subjected to dangerous strains in opening and closing