PA VB9 pressure regulating unloader valve with port for pressure gauge. At gun shut off, the water flow is bypassed at reduced pressure. Sturdy steel and brass construction. Resetting of bypass at around 40 bar – 4 MPa which allows periods of non labour before the release for bypass setting. Hexagonal shaped check valve to avoid jamming. Version with knob, fitted with locknuts for min. and max. pressure regulation. Possibility to fit a venturi injector, on delivery, for chemicals.

PA VB9 pressure regulating unloader valve connected to an electric switch, electro-mechanic type, which when reaching a preset calibrated pressure, opens or closes an electric contact. At gun shut off, the water flow is bypassed at reduced pressure. Sturdy steel and brass construction. Electrical insulation: class IP55. Electric drive shunted from valve functions with two positions: 1) Unloader working in pressure. 2) Unloader with all the flow in bypass. Mechanical control of the electric switch for a simple and reliable function. Hexagonal shaped check valve to avoid jamming. Version with knob, fitted with locknut for min. and max. pressure regulation.