HPEFV series: maximum safety for high-pressure systems
The HPEFV high pressure excess flow valve stands out for its impressive pressure resistance of up to 413,7 barg (6000 PSIG). Because technicians can fine-tune the shut-off point externally, this valve offers accurate protection matched exactly to the system parameters. In addition, the 316 stainless steel construction guarantees a long service life, even under the most demanding industrial conditions.
Why the HPEFV series is essential for your installation
In high-pressure environments, a small leak or line rupture can lead directly to dangerous situations or enormous damage. The HPEFV high pressure excess flow valve minimises this risk by immediately restricting or completely shutting off the flow. Engineers choose this series because of the following advantages:
- High pressure resistance: specially designed for working pressures up to 6000 PSIG.
- Field-adjustable: easily adjust the actuation point with the external adjusting screw without interrupting the system.
- Automatic reset: the standard model with "controlled bleed" resets itself as soon as the system pressure is balanced again.
- Positive shut-off option: choose an elastomer seat for a completely gas-tight (bubble-tight) shut-off.
- Wide temperature range: reliable operation from -40 °C to +104 °C.
Operation at high pressure
The operating principle of the HPEFV high pressure excess flow valve is based on an accurate balance between flow and magnetic force:
- Magnetic locking: an internal magnetic piston is held in place by a powerful external magnet.
- Actuation: with too large a pressure difference due to excessive flow, the flow overcomes the magnetic force.
- Shut-off: the piston shoots to the seat and immediately blocks the outlet port. This immediately stops the uncontrolled outflow.
- Reset phase: after repair, the controlled bypass (bleed) equalises the pressure, after which the piston automatically returns to the open position.
Technical specifications HPEFV series
| Feature | Specification |
|---|
| Material | 316 stainless steel |
| Maximum working pressure | 413,7 barg (6000 PSIG) |
| Adjustment range (air) | 4 to 1132 SLPM (depending on model) |
| Adjustment range (water) | 0,1 to 15,1 LPM (depending on model) |
| Port sizes | 1/4", 1/2" or 3/4" FNPT |
| Output | Optional switch contact (reed switch) |
Applications in heavy industry
The HPEFV high pressure excess flow valve is the standard choice for critical high-pressure applications:
- CNG delivery: safe monitoring when refuelling and distributing natural gas.
- High-pressure plant lines: protection of central distribution lines in plants.
- Hydraulic systems: prevention of massive oil loss in case of hose rupture under high pressure.
- Test setups: protection of components during high-pressure tests.
Looking for a solution for lower pressure ranges or other materials such as brass? Then look at our standard EFV series. For help with the exact sizing of your high-pressure system, contact our product specialists or consult the ChemTec website.
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