HY-TS10-26 (Proportional Relief Valve)

A screw-in, cartridge-style, pilot-operated, spool-type hydraulic relief valve, which can be infinitely adjusted across a prescribed range using a variable electric input. The regulated pressure is proportional to the input electric current. This valve is intended for use as a pressure limiting device in demanding applications.


The TS10-26 blocks flow from ① to ② until sufficient pressure is present at ① to open the pilot section by offsetting the electrically induced solenoid force. With no current applied to the solenoid, the valve will relieve at approximately 6.9 bar (100 psi). The optional manual override allows the valve to be set when the electric supply is lost. The manual setting is added to the electric setting. To prevent the system from being over pressurized, the manual override should always be disengaged prior to applying power to the coil.


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



Installation position

When possible, the valve should be mounted below the reservoir oil level. This will maintain oil in the armature preventing trapped air instability. If this is not feasible, mount the valve horizontally for best results.

Storage temperature (℃)

-20℃ to +55℃

Ambient temperature (℃)

-20℃ to +50℃


Hydraulic specification

Max. operating pressure

241 Bar (3500psi)

Rated flow

94.6 Lpm/5gpm, DP=13.1 bar (190 psi) , cartridge only, ① to ②, coil energized

Flow path

Free flow: ① to ② coil de-energized;

Relieving: ① to ② coil energized

Max. Pilot flow

0.76 Lpm (0.2 gpm)


Less to 3%

Hydraulic fluid

Mineral oil, phosphate-ester


7.4 ~ 420 cSt (50 ~ 2000 sus)


-40℃~+120℃ (-40~250°F), with NBR seals


HY10-2, see page G.1.3


Electrical specification

Max. Control current

12 VDC coils: 1.1A;

24 VDC coils: 0.55A

Relief pressure range

(from zero to max. Control current)

A: 6.9-207bar (100-3000psi);

B: 6.9-159bar (100-2300psi);

C: 6.9-117bar (100-1700psi)


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