HydraForce, Inc. Spool-Type, 3-Port, Normally Closed, Control Valve Flow Control HyPerformance® HPV12-31

A high pressure, solenoid-operated, electrically-variabl e, three-port, pressure-compensated , spool-type, normally open when de-energized, proportional flow control valve. It can be used as a priority-type flow regulator with pressure-compensated , regulated and bypass flow. It can also be used as a restrictive-type 2-way, pressure-compensated flow regulator when the bypass line (port 2) is blocked. OPERATION With inlet flow at port 1, the HPV12-31 will regulate priority flow out of port 3 regardless of system working pressure, with flow rate inversely proportional to current applied to the solenoid. Excess flow will bypass out of port 2 and can be used for auxiliary function control. Note: Avoid dead-heading of priority line by external valving to prevent blocking of bypass line. In restrictive mode applications, bypass port 2 has to be blocked. Flow rate out of port 3 remains inversely proportional to current applied to the solenoid regardless of load (pressure) applied to port 3. FEATURES • Excellent linearity and hysteresis. • Hardened spool and cage for long life. • Compensated flow control. • Efficient wet-armature construction. • Patented high-strength solenoid tube. • 2 or 3-ported operation. • Uses more compact 10-size coil. • Coil waterproofing standard. • All HyPerformance™ products are tested to NFPA specification T2.6.1. • and are tested at a verification level of 90% and an assurance of 99%.