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

HEC12-43

PRIORITY ON DEMAND PRESSURE COMPENSATOR WITH DYNAMIC LOAD SENSE

Overview

Description

HEC12-43 is a screw-in, cartridge style, priority on demand pressure compensator valve with dynamic 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 HEC12-43 will deliver required priority flow at port 4 regardless of load pressure. Excess 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
  • 80 and 160 compensating springs
  • All HyPerformance products are tested to NFPA specification T2.6.1 and are tested at a verification level of 90% and an assurance of 99%
Pressure Ratings
Pressure rating:
  • 350 bar (5075 psi)
  • 420 bar (6090 psi) (10% cycle life
Proof pressure:
  • 690 bar (10000 psi)
Burst pressure:
  • 1380 bar (20000 psi)
Flow Ratings
Inlet flow rating:
  • 68 lpm (18.0 gpm) With 5.5 bar (80 psi)compensating spring
  • 83 lpm (22.0 gpm) With 7.6 bar (110 psi)compensating spring
  • 95 lpm (25.0 gpm) With 11.0 bar (160 psi)compensating spring
  • 132 lpm (35.0 gpm) With 15.2 bar (220 psi)compensating spring
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 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:
  • 0.44 kg (0.98 lb)
Internal wetted surface area:
  • 334 cm² (51.7 in²)
Cavity:
Cartridge installation torque:
  • 156 to 170 N-m (115 to 125 ft-lb) Steel/ductile iron cavity
  • 122 to 136 N-m (90 to 100 ft-lb) Aluminum cavity
Orientation restriction:
  • None
Seal kit:
  • HSK12-4N-MMM Buna N
  • HSK12-4V-MMM Fluorocarbon
  • HSK12-4U-OOO Urethane
HEC12-43_Flow-Pressure
HEC12-42_Dim

Materials

Cartridge: Steel with hardened work surfaces. Zinc-plated exposed surfaces; Urethane O-rings and no back-ups standard.

Ported Body: Weight: 4.05 kg. (8.93 lb); H-series ductile iron standard. Rated to 345 bar (5000 psi).

HEC12-43_Order
POSITION
CODE
DESCRIPTION
HEC12-43-H-J-R
H
Line Body
H
0
No Body
H
12HT
Ductile Iron SAE 12
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
U
PPDI Urethane
R
Compensator Spring
R
80
80 Compensator Spring
R
160
160 Compensator Spring