TS08-20 Proportional Electrohydraulic Relief Valve (TS08-20)

A screw-in, cartridge-style, direct acting, poppet-type electro hydraulic relief valve, which can be infinitely adjusted across a prescribed range using a variable electric in-put. Pressure output is proportional to DC current input. This valve is intended for use as a pressure limiting device in demanding applications.

Product Operation

The TS08-20 blocks flow from 1 to 2 until sufficient pressure is present at 1 to offset the electrically induced solenoid force. With no current applied to the solenoid, the valve will free flow from 1 to 2. Note: Back pressure on port 2 becomes additive to the pressure setting at a 1:1 ratio.

Product Features

 12 and 24 volt coils standard.
 Optional waterproof E-Coils rated up to IP69K.
 Industry common cavity.
 Waterproofed coils standard.

Product Ratings

Maximum Inlet Pressure: 34.5 bar (500 psi)
Electrical Parameters:
Coil
Typical Max. Current
(A) at 0 gpm
Typical Resistance
± 5% @ 20°C (ohms)
Typical Apparent
Inductance (mH)
12 VDC
24 VDC
12 VDC
24 VDC
12 VDC
24 VDC
D-Coil0.650.329.8 ±5%39.3 ±5%88.9N/A
E-Coil0.750.378.8 ±5%33.8 ±5%12.462.1
Control Signal: DC or PWM (Significant improvements in valve performance occur with superimposed dither, with either control method.)
Hysteresis with Dither 250 Hz: 3.0% (7% maximum without dither)
Rated Flow: A:
3.8 lpm/1 gpm @ 1.4 bar/20 psi pressure drop B: 3.8 lpm/1 gpm @ 0.8 bar/12 psi pressure drop
Step Response: TON 3.400.1.
HYDRAFORCE.com®
Recommended Electronic Controllers:Model
EFDR2 Multi-Input Fan Drive Controller.For more information go to: http://www.hydraforce.com/Electro/fandrive.htmor
Recommended Electronic Controllers catalog page 2.001.1 (Table 2)

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