FCR51-3/4-30 Series FULL RANGE PRESSURE COMPENSATING VARIABLE FLOW CONTROL VALVE with relief valve 

Relief Pressure setting at 1500PSI. 750~3000PSI Adjustable. 

Flow range: 

30GPM, port size 3/4" NPT

Other Available parts:

Part code             Flow            Ports          Relief Set pressure

FCR51-3/4-30        0~30GPM       3/4"NPT      1500PSI(750~3000PSI adjustable) 

FCR51-12-30        0~30GPM       SAE12         1500PSI(750~3000PSI adjustable) 

FCR51-1/2-16        0~16GPM       1/2"NPT      1500PSI(750~3000PSI adjustable) 

FCR51-10-16       0~16GPM       SAE10          1500PSI(750~3000PSI adjustable) 

Description

FC flow controls are priority type flow controls. A constant rate of flow (through a spool type compensator) is maintained at the constant flow port (CF) regardless of change in load pressure located downstream. Once maximum controlled flow is achieved, the compensator spool shifts to deliver any excess flow to an excess flow port EX. Excess flow can either be used to supply flow to another function or be directed to tank. Should the excess flow port be plugged or blocked, the FC will function as two-port pressure compensated flow control.

 Specification

·        See flow chart for capacity

·        Input flow 35GPM (131.25 LPM

·        Control flow

8GPM/30LPM (SAE8 or 3/8” NPT)

16GPM/60LPM (SAE10 or ½” NPT)

30GPM/112.5LPM (SAE12 or ¾” NPT)

·        Pressure Rated

3000PSI(207Bar) at SAE ports, 2500PSI at NPT ports.

·        Temp range operation: -40⁰F to 200⁰F (-40⁰C to +93^oC)

·        30 Micron filtrations recommended

·        Torque to turn side level spool 35 in.lbs with 3000PSI on EX port 

Operation

Flow enters inlet port IN and travels to the spool. The spool is spring compensated and normally open to the CF port. A rotary lever adjusts the amount of controlled flow. Any amount of flow in excess of the controlled flow is diverted by the spool to the excess flow port. Controlled flow is maintained by a pressure (around 50PSI) pressure differential in the compensator spool and spring.

 The rotary lever rotates an orifice which increases or decreases the controlled flow. The level is marked in gradient of 0 through 12. At 0, all flow is directed to the EP. The CF is blocked. At 1, The orifice begins opening the controlled flow port until it is fully open at 10. The number 1~10 represent position only and do not correspond to a rate of flow.