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- Products
HY-TS08-27 (Proportional Relief Valve)
A screw-in, cartridge-style, pilot-operated, hydraulic pressure relief valve, which can be infinitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. This valve is intended for use as a pressure limiting device in demanding applications.
Operation:
The TS08-27 blocks flow from ① to ② until sufficient pressure is present at ① to open the valve by overcoming the preset induced spring force. With no current applied, the valve will relieve at ±50 psi of the spring maximum. Applying current to the coil reduces the induced spring force thereby reducing the valve setting. The regulated pressure is inversely proportional to the input electrical current.
Note: this valve is ideal for hydraulic fan drive applications. Please contact the manufactory for more information about electronic controller for fan drive applications.
Technical specification (for application beyond these parameters, please contact with us)
|
Model |
HY-TS08-27 |
|
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 |
19 Lpm/5gpm; DP=7.8 bar (113.3 psi) ± 10%, cartridge only, ① to ② coil energized |
|
Flow path |
Free flow: ① to ② coil energized; Relieving: ① to ② coil de-energized |
|
Hysteresis |
Less to 3% |
|
Pressure rise |
A: 40 psi/gpm; B: 50 psi/gpm; C: 28psi/gpm |
|
Hydraulic fluid |
Mineral oil, phosphate-ester |
|
Fluids |
7.4 ~ 420 cSt (50 ~ 2000 sus) |
|
Temperature |
-40℃~+120℃ (-40~250°F), with NBR seals |
|
Cavity |
HY08-2, see page H.1.2 |
Electrical specification
|
Max. Control current |
12 VDC coils: 1.2A; 24 VDC coils: 0.6A |
|
Relief pressure range (from zero to max. Control current) |
Minimum pressure is factory-adjusted. Range a: 207-4.1bar (3000-60psi); Range b: 138-4.1bar (2000-60psi) |