PROPORTIONAL CONTROLS
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W 28/2022
Via Malavolti, 36 - 41122 Modena - ITALY - Phone +39 (059) 254895 - Fax +39 (059) 253512 - mail: tecnord@tecnord.com - www.tecnord.com
WARNING: the specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
EG-TRZ-42-L PILOT OPERATED PROPORTIONAL, PRESSURE REDUCING/RELIEVING
DESCRIPTION
Special cavity, 7/8-14 thread, pilot operated proportional pressure reducing/relieving valve.
OPERATION
The EG-TRZ-42-L generates a variable pressure in response to a PWM (Pulse Width Modulated) current signal.
With no current applied to the proportional solenoid, the inlet port 3 (P) is blocked and the regulated port 2 (U) is
vented to port 1 (T).
As current is increased, uid pressure is proportionally controlled at the regulated port 2 (U). On attainment of
proportionally determined pressure at 2 (U), the cartridge shifts to block ow at 3 (P), thereby regulating pressure
at 2 (U). In this mode, the valve also will relieve 2 (U) to 1 (T) at a variable value over the set reducing pressure.
FEATURES
• Hardened parts for long life.
• Efcient wet-armature construction.
• Unitized valve/coil.
• Continuous duty rated solenoid.
Nominal Flow 7.9 GPM (30 LPM)
Max Inlet Pressure 700 PSI (50 bar)
Controlled Pressure Range (see graph)
Max Internal Leakage 700 cc/min @ 50 bar
Max Back-Pressure at T Port 20 bar
Viscosity Range 36 to 3000 SSU (3 to 647 cSt)
Filtration ISO 18/15/13
Media Operating Temp. Range -30°C / +100°C
Weight .63 lbs (.29 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 16 ft-lbs (30 Nm)
Coil Nut Torque Requirements 1-2 ft-lbs (2-3 Nm)
Cavity T042
Cavity Tools Kit
(form tool, reamer, tap) K-T042
VALVE SPECIFICATIONS
Current Supply Characteristics PWM (Pulse Width Modulation)
Rated Current Range 100-1000 mA with 12 VDC Coil
50-500 mA with 24 VDC Coil
PWM or Super-Imposed
Dither Frequency 150-200 Hz
Coil Resistance 7.8 Ohm ±5% at 68°F (20°C) 12 VDC
32 Ohm ±5% at 68°F (20°C) 24 VDC
Max Power Consumption 18 Watt
COIL SPECIFICATIONS
HYDRAULIC SYMBOL
PERFORMANCE
Pressure (bar)
Current (mA)
Pressure vs. Current characteristic
Inlet pressure 36 bar, Oil viscosity 46 cSt @ 45°C
PROPORTIONAL CONTROLS
Page PT15
W 28/ 2022
Via Malavolti, 36 - 41122 Modena - ITALY - Phone +39 (059) 254895 - Fax +39 (059) 253512 - mail: tecnord@tecnord.com - www.tecnord.com
WARNING: the specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
DIMENSIONS
ORDERING INFORMATION
Approximate Coil Weight: .42 lbs (.19 kg)
Pressure Drop (bar)
Flow (LPM)
Pressure Drop vs. Flow characteristic
Oil viscosity 46 cSt @ 45°C
MAX REGULATED
PRESSURE
OPTIONS “A” COIL
TERMINATION
VOLTAGE BODIES
35 bar 00 - Buna Standard DL - Double Lead 12 - 12 VDC Blank - Without
body
A0 - Buna Screen HC - DIN 43650
(Hirschmann)
24 - 24 VDC N - 3/8” BSP Ports
JT - AMP Jr. Timer
DT - Deutsch DT04-2P
EG- TRZ-42-L - – – – –
