Flow Control Valves — HyPerformance™

HEC12-43 — Pressure Compensator, Priority-on-Demand with Dynamic Load Sense
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HEC12-43 Valve

HEC12-43 Valve symbol


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

With inlet flow at port 3, the HEC12-43 will deliver required priority flow at 4, regardless of load pressure.
Excess flow exits at 2. Port 1 is the load sense port. All ports may be fully pressurized.

• 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%

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
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
Load Sense Line Flow Rate: 1.1 lpm (0.3 gpm) maximum with 350 bar (5075 psi)
   pressure at Port 3 and with Ports 2 and 4 blocked
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: HCT12-4xx; See page 8.600.1
Seal Kit: HSK32-4U-MMM; See page 8.650.1




HEC12-43 Flow vs. Pressure



HEC12-42 Valve Dimensions



Cartridge: Weight: 0.44 kg (1.02 lb); 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). See page 8.012.1_4w.



HEC12-43 Flow vs. Pressure