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Line PR
The EPTA® PR pressure pre-reducer is used mainly in pilot regulating valves or in pneumatic instruments to control the regulated pressure and to keep it stable regardless the downstream variation. In order to make the outlet pressure pair the variations of the signal, and thus to maintain a constant differential in the pilot so as to have a better control of the valve.
As the name suggests, it is used to reduce the inlet pressure to a pilot, thus improving the performance of the valve the pilot controls. -
Line PR6754
The EPTA® PR6754 pre-reducing pressure is used in pneumatic instruments to control the regulated pressure and to keep it stable regardless the downstream variation of the valve it controls. It receives an external signal which adds to the range of the spring previously compressed, so the outlet pressure can pair with the variations in the signal and thus maintain a constant differential in the pilot to provide a better control of the valve.
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Line P6351SR
The EPTA® P6351SR is a pressure reducing pilot used in pneumatic instruments to control the regulated pressure and to keep it stable regardless the downstream variation in the valve it controls.
It is used in valves type FC with differential actuator line RG.
It is also used in valves type FO with differential actuator as for example RG97, RG97S, RG107, RG2050, RG2070. -
Line R1
The 2-way pneumatic relay R1 (Direct or Reverse) is typically used together with a pneumatic switch to block or put back valves. It can also be used in pneumatic instruments as secondary element. When the registered pressure reaches the setting relay value, this sends a pneumatic signal to the switch producing a variation in their state. Its main function is to register the pressure in service line.
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Line R2
The pneumatic blocking relay R2 (Direct or Reverse) is typically used together with a pneumatic switch to block or put back valves. It can also be used in pneumatic instruments as a secondary element. When the registered pressure reaches the relay setting value, the relay sends a pneumatic signal to the switch thus producing a variation in its state. Its main function is to register service pressures on line.
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VR Check Valve
The EPTA® VR check valve is used to block or hold the fluid pressure supply of a valve. It is pneumatically operated whenever a dramatic fluid pressure drop occurs, thus keeping the valve in its working position.
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Rapid Vent Valve VVR
The EPTA® VVR rapid vent valve is used to quickly evacuate the fluid supply of a pneumatically operated valve whenever a blocking signal appears.
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Variable Restrictor RV
The EPTA® RV variable restrictor is an element which makes it possible to get a higher or lower responsiveness in the outlet or regulated pressure of a self-regulating valve (for example model 1099R or VD277) whenever there is any stream variation in the pilot valve.
