Category Archives: Spence Valves

Pressure Reducing Valve

Koss Industrial, Inc. sells the Type E Main Valve, which is a pressure reducing valve.  The Type E Main Valve is a self operated, external pilot type, single seated, metal diaphragm actuated, normally closed designed valve.  The internal parts of the valve consists of the seats, discs, stems & diaphragms, which are constructed of stainless steel.  There are no springs in the steam space and there is no stuffing box.  A major bonus of this valve is that the Type E Main Valve is easily maintained.  All of the valves parts are accessible without the valve needing to be removed from the line.  Pictured here is the Type E Main Valve with a D Pilot mounted on to it in order to regulate pressure.

Spence Valves

Type E Main Pressure Reducing Spence Valve with D PilotKoss Industrial, Inc. offers a wide selection of pressure reducing valves.  One line of reducing valves that can be found through Koss Industrial, Inc. at are the  spence valves.  The spence reducing valves, the Type E Main Valves, are generally used in fluid, gas, and vapor applications.  This valve is normally closed with a single seat, and has balanced metal diaphragms with a protected spring.  The Type E Main valve is virtually frictionless and has a easy in-line maintenance to help maintain a long service life.