PA VB26 Pressure Regulating Unloader Valve. At gun shut off, the water flow is bypassed at reduced pressure. High level compensated design. Compact dimensions. Sturdy construction in Stainless steel Aisi 316. Adjustable locknut to control the max pressure. Hexagonal shaped check valve to avoid jamming. - Plastic cap with anti-removal system. By-pass G1/2 F. Easy maintenance. 280 Bar rated pressure. 80 Lpm max flow. 90°C rated water temperature. Trapped pressure valve. AISI 316 stainless steel. Plastic regulator knob. 1/2"BSPF inlet. 1/2"BSPF outlet. 1/2"BSPF bypass.