Prince Hydraulic Works

Polyhydron directional control valves are spool-type hydraulic valves designed to direct the flow of fluid in a hydraulic system, available in manual (lever-operated) and solenoid-operated versions. They feature a five-chamber body design for low pressure drop, a balanced spool for reliability, and a rotatable operating head for mounting flexibility. Common characteristics include subplate mounting to ISO 4401 standards, compatibility with mineral oil, and options for spring-centered, spring-offset, or detented spool positions.