Flow Control Valves — HyPerformance™

HEC12-42 — Pressure Compensator, Priority-on-Demand with Static Load Sense
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HEC32-43 Valve

SYMBOL:
HEC12-42 Valve symbol

 

DESCRIPTION
A screw-in, cartridge-style, priority-on-demand, pressure-compensator with a static load sense,
intended to provide priority flow in the required amount, while allowing excess flow to be used for
auxiliary functions.

OPERATION
With inlet flow at port 3, the HEC12-42 will deliver required priority flow at 4, based on the size of
the external orifice, regardless of load pressure. Excess flow exits at 2. 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.
• 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%

RATINGS
Operating Pressure: 350 bar (5075 psi); 10% lift cycle: 420 bar (6090)
   Note: HyPerformance valves are tested for 900K cycles at 350 bar and 100K cycles at 420 bar.
Proof Pressure: 690 bar (10,000 psi) maximum
Burst Pressure: 1380 bar (20,000 psi) maximum
Maximum Internal Leakage: 50 ml/min. (3.1 cu. in/min.) at Port 1 with 350 bar
   (5075 psi) pressure at Port 3 and Ports 2 and 4 blocked
Inlet Flow: 95 lpm (25 gpm) max. with 11 bar (160 psi) compensating spring;
   68 lpm (18 gpm) max. with 5.5 bar (80 psi) compensating spring
Priority Flow Rate: up to 80% of maximum input flow
Flow Maintenance: See performance chart
Temperature: -54° to 107°C (-65° to 225°F) with PPDI Urethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: HVC12-4; See page 9.112.1_4w
Cavity Tool: HCT12-4xxx; See page 8.600.1
Seal Kit: HSK12-4U-0; See page 8.650.1



 

 

PERFORMANCE:

HEC12-42 Flow vs. Pressure

 


DIMENSIONS:

HEC12-42 Valve Dimensions

 


MATERIALS:

Cartridge: Weight: 0.46 kg (1.02 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Urethane O-rings and no back-ups standard.

Ported Body: Weight: 5.04 kg (11.13 lb);
H-series ductile iron standard. Rated to 345 bar (5000 psi). See page 8.012.1_4w.

 

ORDERING CHART:

HEC12-42 Flow vs. Pressure