... tensile strength gray cast iron MONO-BLOCK DIRECTIONAL CONTROL VALVE-Load check on each spool to prevent the fall of a cylinder as ... -Max pressure: 3,000 PSI-Built-in relief valve , adjustable from 1,500 to 3,000 PSI, preset @ 2,100 PSI-Power ... -Optional 4 Position Float on 1st spool Mono-Block Directional Control Valve