Valves - Flow Controls - Pressure Compensator - Priority Type - Pre-Compensator - Static Load Sense

EC56-42

PRIORITY ON DEMAND PRESSURE COMPENSATOR WITH STATIC LOAD SENSE

Overview

Description

EC56-42 is a screw-in, cartridge style, priority on demand pressure compensator valve with static load sense. Intended to provide priority flow in required amount, while allowing excessive flow to be used for auxiliary functions

Operation

With inlet flow at port 3, the EC56-42 will deliver required priority flow at port 4 regardless of load pressure. Excessive flow exits at port 2 and port 1 is the load sense port. All ports may be fully pressurized

Features

  • High pressure.
  • Priority-on-demand
  • Static load-sense.
  • Hardened parts for long life.
  • Quiet, modulated response.
  • Industry common cavity.
  • Optional corrosion-resistant plating for 960-hour salt spray per ASTM B117.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Proof pressure:
  • 690 bar (10000 psi)
Burst pressure:
  • 1275 bar (18500 psi)
Flow Ratings
Inlet flow rating:
  • 115 lpm (30.0 gpm) Maximum, with compensating spring 5.5 bar (80 psi)
  • 150 lpm (40.0 gpm) Maximum, with compensating spring 10.3 bar (150 psi)
  • 189 lpm (50.0 gpm) Maximum, with compensating spring 15.2 bar (220 psi)
Priority flow rating:
  • 80% of input flow when priority pressure exceeds bypass pressure. 50% of input flow when bypass pressure exceeds priority pressure
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 polyurethane 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)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.67 kg (1.48 lb)
Internal wetted surface area:
  • 425 cm² (65.9 in²)
EC56-42_Flow-load-charts EC56-42_Flow-charts
EC56-42_Dim

Materials

Cartridge: Weight: 0.74 kg (1.64 lb) Steel with hardened work surfaces. Zinc-plated exposed surfaces. Polyurethane or urethane seals recommended for high pressure operation.

Ductile Iron Ported Body: Weight: 3.76 kg (8.3 lbs) Ductile iron (code "D") standard, rated to 345 bar (5000 psi).

Aluminum Ported Body: Weight: 1.39 kg (3.07 lb) Anodized, high-strength aluminum bodies rated for 207 bar (3000 psi) also available, dimensions may differ.

Cavity:
Cartridge installation torque:
  • 133 to 138 N-m (98 to 102 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK16-4X-MMM X = seal option
  • SK10-4U-0 Urethane
EC56-42_Order
POSITION
CODE
DESCRIPTION
EC56-42-H-J-R
H
Line Body
H
0
No Body
H
12TD
Ductile Iron SAE 12
H
16TD
Ductile Iron SAE 16
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
R
Compensator Spring
R
80
80 Compensator Spring
R
150
150 Compensator Spring