EHPR98-T35 Proportional Reducing/Relieving (EHPR98-T35)
A direct-acting, spool-type, drop-in-style, fl ange-mounted, pressure reducing/reliev-ing valve, which can be infi nitely adjusted across a prescribed range using a variable electric input. Pressure output is proportional to DC current input. The Ecoil is an integral part of the valve assembly, and cannot be replaced or fi eld-serviced.
roduct Operation
The EHPR98-T35 allows free flow from ➀ to ➂ when no current is applied to the coil. When the coil is energized, ➁ is connected to ➀. Increasing current applied to the coil will increase the control (reduced) pressure proportionally. If pressure at ➀ exceeds the setting induced by the coil, pressure from ➀ is relieved to ➂Note: Back pressure on port ➂ becomes additive to the pressure setting at a 1:1 ratio.
Product Features
• Economical drop-in style.
• Several push-on termination options.
• Integral waterproof coil standard.
• 1000-hour salt spray protection.
• 10, 12, 20 or 24 VDC coils.
Product Ratings
Maximum Inlet Pressure: 103 bar (1500 psi); If higher inlet pressure is required (103 bar/1500 psi to 241 bar/3500 psi) select the “A” option in the model code.
Maximum Tank Pressure: 34.5 bar (500 psi);with Manual Override Option: 17.2 bar (250 psi)
Control Pressure at Maximum Control Current: 20.7 bar (300 psi)
Maximum Control Current: 1.38 amps for 10 VDC coil; 1.30 amps for 12 VDC coil;0.69 amps for 20 VDC coil; 0.65 amps for 24 VDC coil
Resistance: 4.2Ω (10V); 5.1Ω (12V); 17.0Ω (20V); 19.3Ω (24V)
Inductance: 80 mH (12V);
Hysteresis: Less than 4% with 100 Hz PWM
Flow Rating: 5.7 lpm (1.5 gpm)
Maximum Internal Leakage: De-energized: 75 ml/minute (4.58 cu. in./minute) at 25 bar (365 psi); 200 ml/minute (12.2 cu. in minute) at 241 bar (3500 psi).Energized at I-Max.: 125 ml/minute (7.63 cu. in./minute) at 25 bar (365 psi); 400 ml/minute (24.4 cu. in. minute) at 241 bar (3500 psi)
Temperature: -40 to 120°C (-40 to 250°F), with standard Buna N seals
Ambient Air Temperature: -40 to 80°C (-40 to 176°F)
Environmental Rating: IP69K
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: Flange Mount
Mounting Screws: M4 x 0.7 x 12 Long; Part No. 4001015 (not provided with valve)
Cavity: VC-T009; See page 9.111.1;
Cavity Tool: CT-T009R0-x-G; See page 8.600.1
Seal Kit: SKEHPR98-T3X; See page 8.650.1
