Spirax Sarco Type 25p & 25PA Pressure Reducing Valves

Pressure Reducing Valve,Steam Pressure Reducing Valve

The 25P is a self-actuated pilotoperated pressure regulator. Downstream pressure is fed back through an external sensing line to the pressure pilot,which adjusts the opening of the main valve so as to maintain the set pressure. The main valve can close tight for ANSI/FCI 70-2 Class IV shut off when steam is not required.


• Ability to interchange or configure two or more pilots on the same regulator body-combine remote on/off control together with pressure reduction.
• Accurate control of pressure with choice of three color coded springs.
• Fatigue tested diaphragm designed without a piston prevents danger of sticking.
• Body materials available in cast iron, steel or stainless steel.
• Stainless steel internals for excellent durability and resistance to corrosion.
• Wide range of screwed and flanged connections.

The U-ideal instrument supplied steam pressure reducing valve (pressure control valve) is a kind of piloted piston type pressure reducing valve. Consists of main valve and pilot valve two parts. The main valve is mainly composed of valve seat, the main valve plate, piston and spring. Pilot valve is mainly composed of the seat, disc, diaphragm, spring and adjusting spring. Set spring outlet pressure By adjusting the spring, diaphragm transmit the sensing outlet pressure changes, the pilot valve opening and closing which drive piston to adjust the throttling flow area, realize the control function of pressure controller.

The products are mainly used for steam pipe, is pressure reducing and sustaining valve.