HY-YF04-05 (Direct-Operated Relief Valve)

When the pressure value of port P is 85% of the spring set pressure, oil port P to T will be closed; If the pressure is more than 85% and continue rising, the fluid will be relieved from port P to T, till to the max spring set pressure value.

Brief introduction:

Product features:

Screw-in cartridge;

Small size; compact structure;

Direct-operated, poppet-type;

Optional pressure adjustment spring.

 

Function:

When the pressure value of port P is 85% of the spring set pressure, oil port P to T will be closed; If the pressure is more than 85% and continue rising, the fluid will be relieved from port P to T, till to the max spring set pressure value. (note: the rate 85% is an approximate value, it’s normal that the actual value may slightly deviates.)

 

Technical specification (for application beyond these parameters, please contact with us)

Model

HY-YF04-05

Installation position

Optional

Shortage temperature (℃)

-03 to +120

Installation torque (N.m)

13.5-16

 

Hydraulic parameters (for application beyond these parameters, please contact with us)

Maximum pressure

210 Bar

Maximum flow

15 L/min

Internal leakage

3 ml/min (measured at 210 bar)

Working medium

Mineral oil; phosphate-ester

Viscosity range

20-380 mm2/S

Oil temperature

-20 - +70℃

Pollution level

The maximum allowable cleanliness of the oil should be according to 9th degree of standard NAS1638. it is suggested that the minimum filter rating should be β10≥75.

Cavity

HYT-2102, see page H.1.11

 

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