U.S. Patent 6,267,350
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DESCRIPTION
A screw-in, cartridge-style, direct acting, poppet-type hydraulic relief valve, which can be infinitely adjusted across a prescribed range using a variable electric input. Pressure output is inversely proportional to DC current input.
OPERATION
The TS38-21 blocks flow from 1 to 2 until sufficient pressure is present at 1 to open the valve by overcoming the preset 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.
FEATURES
• 12 and 24 volt coils standard.
• Optional waterproof E-Coils rated up to IP69K.
• Industry common cavity.
• Hardened parts for long life.
RATINGS
Max. Operating Pressure: 240 bar (3500 psi)
Max. Control Current: 1.10 amps for 12 VDC coil; 0.55 amps for 24 VDC coil
Relief Pressure Range: from zero to max. control current
Minimum pressure is factory-adjustable:
Range A: 207 to 6.9 bar (3000 to 100 psi); Range B: 138 to 6.9 bar (2000 to 100 psi);
Range C: 69 to 6.9 bar (1000 to 100 psi); Range D: 241 to 6.9 bar (3500 to 100 psi)
Rated Flow: 1.1 lpm/0.3 gpm; ΔP = 10 bar (150 psi), cartridge only, 1 to 2 coil energized
Flow Path: Free Flow: 1 to 2 coil energized; Relieving: 1 to 2 coil de-energized
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
-26° to 204°C (-15° to 400°F) with Fluorocarbon seals
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
Cavity: VC08-2; See page 9.108.1_2w
Cavity Tool: CT08-2xx; See page 8.600.1
Seal Kit: SK08-2x-B; See page 8.650.1
Coil Nut: Part No. 4540550
RECOMMENDED ELECTRONIC CONTROLLERS
See model EFDR2 Multi-Input Fan Drive Controller,
or EVDR-Type Controller Selection Guide,
or for other Electronic Controllers, see page 2.001.1_pdf
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