Valves - Pressure Controls

HPB08-E40

PRESSURE REDUCING/RELIEVING CARTRIDGE VALVE PATENT PENDING

Overview

Description

The HPB08-E40 is a screw in cartridge style, direct acting, spool type hydraulic pressure load equalizer valve with internal spring pilot chamber and spool damping chamber. It is designed to act as pressure regulating device for secondary circuits

Operation

In its steady state the HPB08-E40 blocks flow in from port 2 to port 1 and port 2 to port 3. Port 1 is control pressure, port 2 is inlet, port 3 is tank, and port 4 is signal. Port 4 receives signal from the boom cylinder. Nd port 4 is signal. Port 4 receives signal from the boom cylinder. Since port 1 and port 4 have a 1:1 ratio, signal at port 4 sets the pressure at port 1. The valve controls the pressure in the suspension accumulator by adding or removing oil from it

Features

  • High pressure operation.
  • Adjustments prohibit springs from going solid.
  • Internal spring pilot chamber.
  • Internal damping chamber. .
  • Pressure-balanced accumulator charging.

Ratings

Pressure Ratings
Pressure rating
350 bar (5075 psi)
Proof pressure
517.1 bar (7500 psi)
Burst pressure
1379.0 bar (20000 psi)
Flow Ratings
Flow rating
37.9 lpm (10 gpm) At max pressure
Maximum internal leakage
15 ml/min (0.9 in³/min) To port 3
Temperature Ratings
Operating fluid temperature
-40 to 100 °C (-40 to 212 °F) With buna N seals
-26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
-54 to 107 °C (-65 to 225 °F) With urethane seals
Storage temperature
-40 to 70 °C (-40 to 160 °F)
Ambient temperature
-40 to 70 °C (-40 to 160 °F)

Operating Parameters

Fluids
Mineral based or synthetic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination level
20/18/14 per ISO 4406

Properties

Unit weight
0.17 kg (0.37 lb)
Internal wetted surface area
141 cm² (21.8 in²)

Performance

HPB08-E40_Reduce-Relieve_Press

Dimensions

HPB08-E40_Dim

Materials

Materials

Cartridge: Weight: 0.17 kg (0.37 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces. Urethane seals recommended. aluminum knobs.

Standard Ported Body: Ductile iron (code D) bodies are required for operation over 207 bar (3000 psi). Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi) also available, dimensions may differ; consult factory.

Installation Specifications

Cavity
Hvc08-e4
Cartridge installation torque
94.9 to 108.5 N-m (70 to 80 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK08-E4N-BMM Buna-N
SK08-E4V-BMM Fluorocarbon
SK08-E4U-OOO Urethane

Order Code

HPB08-E40_Order