The 535H Series pre-adjustable pressure reducing valves from Caleffi feature a dial indicator that shows direct psi setting. An optional pressure gauge is available for downstream pressure indication. The 535H also features a unique noise reducing, low-friction, pressure-balanced and replaceable cartridge for control stability. A high temperature rating of 180°F and high pressure rating of 300 psi also makes it ideal for hot water booster systems. The self-contained cartridge is removable for easy inspection, cleaning and maintenance.