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

EC12-43

PRIORITY ON DEMAND PRESSURE COMPENSATOR WITH DYNAMIC LOAD SENSE

Overview

Description

EC12-43 is a screw-in, cartridge style, priority on demand pressure compensator valve with dynamic 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 EC12-43 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.
  • Dynamic 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)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117 (model number - gec12-43)
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 (0.96 lb)
Internal wetted surface area:
  • 325 cm² (50.3 in²)
EC12-43_Flow-Pressure(2022-02-24)
EC12-42_Dim(2022-02-24)
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
EC12-43_Order(2022-02-24)

Model Options

EC12-43-H-J-R
H Line Body
CODE
DESCRIPTION
0
No Body
10T
Aluminum SAE 10
12T
Aluminum SAE 12
12TD
Ductile Iron SAE 12
6B
Aluminum BSPP 3/4" (6)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
U
PPDI Urethane
R Compensator Spring
CODE
DESCRIPTION
80
80 Compensator Spring
110
110 Compensator Spring
160
160 Compensator Spring
220
220 Compensator Spring