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PA Pulsar 4 RV unloader valve

Latest version of the historic PA Pulsar by-pass valve. The Pulsar 4rv by-pass valve can be used with working pressures up to 280 bar and with flow rates up to 40 l/min. It is equipped with two inlets and two by-pass outlets that make the valve very versatile and easy to install in different positions. The body is made of brass. The performances of the Pulsar, together with its versatility and ease of installation, suggest its use on washing systems designed to optimize space, especially high pressure washers or self-service car wash systems. The Pulsar is available in different versions: with white spring (160 bar) and with blue spring (280 bar), with or without knob, with or without the pressure gauge port.

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Technical data

Max pressure (bar) 280
Max flow rate (l/min) 40
Body brass

Part numbers

PN Max pressure (bar) KNOB Pressure gauge port FITTINGS JIT DELIVERY
1160000000 160 NO NO G 3/8" F
1160000060 280 NO NO G 3/8" F
1160000700 160 YES NO G 3/8" F
1160000760 280 YES NO G 3/8" F Check
1160004560 280 NO G 1/4" F G 3/8" F
1160001600 160 YES G 1/4" F G 3/8" F
1160001660 280 YES G 1/4" F G 3/8" F Check


  • Brand: PA
  • Available with integrated microswitch
  • Available with sst shaft
  • Available with nickel plated brass body
  • Made in Italy