These couplings have automatic shut off valve at both ends; in socket & plug also. So on disconnection both socket & plug are sealed instantly. This type is widely used on Hydraulic lines carrying oils, water, chemicals & petroleum products. Material & seal are selected to suit the type of fluid.

Construction :

Value - Automatic shut off valve in both, socket & plug        Lock System - Ball lock or pin lock.
End Connection - F - Female threads                                  Material - Stainless Steel, Brass, Carbon Steel
Seal - Nitrile. Viton. Teflon - available on request.

Application : Chemical plants, Refineries, Ships.

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Double Shut Off ( High Pressure ) :

 

These couplings are designed for high pressure applications. As there is no air gap between plug & socket when connected, there is no chance of any air entering hydraulic lines, so air bleeding is unnecessary. Fluid leakage at the time of connection or disconnection is nil because it flows through the holes at the center of the valve body. Designed to provide one touch connection.

 

Application : High Pressure Hydraulic equipments. Hydraulic circuits having large pressure changes.