VB80/400 Stainless Steel UnloaderStainless steel pressure regulating valve equipped with double connection for inlet port. At gun shut off, the water flow is bypassed at reduced pressure Sturdy construction in Sst Aisi 303 Return action of the piston by means of a powerful spring, for confident working and a reliable pressure adjustment Multiple connections for easy installation Hexagonal shaped check valve to avoid jamming Specifications Max. Litres Per Minute: 80 Max. Bar: 450 Max.