PILOT OPERATED RELIEF VALVE

RF SERIES

FEATURES

• RF series relief valve is designed on the theory of differential pressure created by flow across the orifice of the balance piston. This differential pressure acts to open the piston against the spring, permitting enough fluid vented to tank at the set pressure.
• Piston moves smoothly, and controlled by pilot pressure, provides stable pressure control and good repeatability.








 
 
 
 



 
 
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Model Code
Specifications
Dimensions
 
 



Model Code -
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Symbols - top




Specifications - top


  MAX. PRESSURE ADJ. MAX. FLOW MOUNTING BOLTS (FOR G TYPE)
MODEL PRESSURE RANGE LPM(GPM) MM(INCH)
  BAR (PSI) BAR (PSI)    
RF-*04 245 (3550) 1:7-69(100-1000)  100 (25) M12x70L(1/2"x2-3/4") 2PCS M12x90L(1/2"x3-1/2") 2PCS
RF-*06 2:35-138(500-2000) 200 (50) M16x60L(5/8"x2-1/4") 2PCS M16x80L(5/8"x3-1/4") 2PCS
RF-*10 3:69-247(1000-3550) 400 (100) M20x70L(3/4"x2-3/4") 2PCS M20x90L(3/4"x3-1/2") 2PCS



PERFORMANCE CURVES - top

TEST CONDITIONS
Viscosity: 35 cSt (175 SSU) Temperature: 50° C (122° F)

 
NOMINAL OVERRIDE MIN. ADJ. PRESSURE









Dimensions - top UNIT: mm(inch) WEIGHT: 1.5 kgs(3.4 lbs)

RFG-04


RFG-06/10



MODEL A B C D E F G H I J K WEIGHT
                        KGS LBS
RF-G06 175 (6.89) 104 (4.09) 160 (6.30) 104 (4.09) 70 (2.76) 66.6 (2.62) 44.1 (1.74) 11.1 (1.74) 19.5 (0.76) 122 (4.80) 23.8 (0.94) 6.7 14.7
RF-G10 184 (7.24) 120 (4.72) 195 (7.68) 125 (4.92) 82 (3.23) 88.9 (3.50) 63.6 (2.50) 12.7 (0.50) 18.5 (0.73) 150 (5.91) 31.8 (1.25) 10.1 22.1


Dimensions - top UNIT: mm(inch)


RF-T*



MODEL A B C D P PORT T PORT G PORT WEIGHT
                KGS LBS
RF-T04 SERIES MAX. 142 (5.59) 92 (3.62) 111 (4.37) 84.5 (3.33) PT 1/2" PT 1/2" PT 1/4" 3.4 7.5
                   
RF-T06 SERIES MAX. 148 (5.83) 102 (4.02) 140 (5.51) 103 (4.05) PT 3/4" PT 3/4" PT 1/4" 5.3 11.7
                   
RF-T10 SERIES 151 MAX. (5.94) 120 (4.72) 183 (7.20) 120 (4.72) PT 1-1/4" PT 1-1/4" PT 1/4" 8.5 18.7