SYMBOL:
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DESCRIPTION
A drop-in, flange-mounted, cartridge-style, pilot-operated, spool-type hydraulic pressure reducing/relieving 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
Without applied current, the TS98-T34 allows flow from 3 to 4 while blocking 2. When the coil is energized, 3 is connected to 2, and pressure at 3 is controlled proportional to the amount of current applied to the coil. If pressure at 3 exceeds the setting induced by the coil, pressure is relieved to 4. Back pressure on port 4 becomes additive to the pressure setting at a 1:1 ratio.
Note: Consult factory for special OEM variations of this product.
FEATURES
• 12 and 24 volt coils standard.
• Economical drop-in style.
• Several push-on termination options.
• Integral waterproof coil standard; See page 3.400.1_pdf for a description of tests
••conducted to verify coil waterproofing.
RATINGS
Max. Inlet Pressure and Regulated Pressure: 30 bar (435 psi)
Max. Control Current: to achieve 20 bar (290 psi) regulated pressure:
0.85 amps for 12 VDC coil; 0.43 amps for 24 VDC coil
Note: Regulated pressures up to 29.3 bar (425 psi) can be attained with increased
current values and 30 bar (435 psi) inlet pressure
Deadband: 0.15 amps at 12 VDC; 0.075 amps at 24 VDC
Reducing/Relieving Pressure Range: from zero to max. control current:
0 to 20.7 bar (0 to 300 psi)
Rated Flow: 30 lpm (8 gpm) at 45 psi port 3 to 4 with coil de-energized
Max. Pilot Flow: 0.79 lpm (0.21 gpm) with 20.7 bar (300 psi) inlet
Hysteresis: 5% PWM for 20 bar (290 psi) control pressure
Flow Path: Free Flow: 3 to 4 coil de-energized; Reduced: 2 to 3 coil
energized; Relieving: 3 to 4 coil energized; Port 1 is not plumbed externally
Oil Temperature: -40 to 120°C (-40 to 248°F)
Ambient Air Temperature: -40 to 120°C (-40 to 248°F)
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: 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; See page 9.020.1
Flange Mounting Screws: M5 x 8; Part No. 4000039 (not provided with valve)
Cavity: VC-T003; See page 9.111.1; Cavity Tool: CT-T003R0-x-G; See page 8.600.1
Seal Kit: SK98-T3N; See page 8.650.1
RECOMMENDED ELECTRONIC CONTROLLERS
The EVDR Series controllers are recommended for use with most HydraForce proportional valves. These newer electronic controllers are versatile, reliable, and easily configured and customized for a wide range of applications. See the EVDR Product Selection Guide.
For other Electronic Controllers, see page 2.001.1_pdf |
