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

EC12-42

PRIORITY ON DEMAND PRESSURE COMPENSATOR WITH STATIC LOAD SENSE

Overview

Description

EC12-42 is a screw-in, cartridge style, priority on demand pressure compensator valve with static load sense. It is 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 EC12-42 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

  • Priority-on-demand.
  • Static load sense.
  • Hardened parts for long life.
  • Quiet, modulated response.
  • Industry-common cavity.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Flow Ratings
Inlet flow rating:
  • 68 lpm (18.0 gpm) Maximum, with compensating spring 5.5 bar (80 psi)
  • 83 lpm (22.0 gpm) Maximum, with compensating spring 7.6 bar (110 psi)
  • 95 lpm (25.0 gpm) Maximum, with compensating spring 11.0 bar (160 psi)
  • 132 lpm (35.0 gpm) Maximum, with compensating spring 15.2 bar (220 psi)
Priority flow rating:
  • Up to 80% of input flow
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
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:
  • 0.44 kg (0.97 lb)
Internal wetted surface area:
  • 304 cm² (47.1 in²)
EC12-42_Flow-Pressure
EC12-42_Dim

Materials

Cartridge: Weight: 0.43 kg (0.94 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Standard Ported Body: Weight: 1.5 kg (3.3 lb); Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.

Cavity:
Cartridge installation torque:
  • 99 to 104 N-m (73 to 77 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-4X-MMM X = seal option
EC12-42_Order
POSITION
CODE
DESCRIPTION
EC12-42-H-J-R
H
Line Body
H
0
No Body
H
10T
Aluminum SAE 10
H
12T
Aluminum SAE 12
H
12TD
Ductile Iron SAE 12
H
6B
Aluminum BSPP 3/4" (6)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Compensator Spring
R
80
80 Compensator Spring
R
110
110 Compensator Spring
R
160
160 Compensator Spring
R
220
220 Compensator Spring