Solenoid valves 2/2 and 3/2-way

Compressor unloading valves 2/2

2/2-way compressor unloading valves are used during start-up of screw and piston compressors to depressurise the pressure vessel and reduce the inrush current of the drive motor. The ENTLAST series covers versions for screw compressors (ENTLAST 12 SCH, G 1/2" and ENTLAST 14 SCH, G 1/4", both 230 VAC) and for piston compressors (ENTLAST 10, G 1", and ENTLAST 12, G 1/2", both 230 VAC). All types operate normally open (NO).

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Boge ENTLAST 14 SCH. Entlastventil (NO) G 1/4" für Schraubenkompressoren, 230 VAC
€432.78

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How to choose Compressor unloading valves 2/2

What matters when choosing: properties, comparison and typical applications.

Technical features

⚙ Normally open (NO) - pressure relieved when de-energised, closes after start-up to allow pressure build-up

⚡ Supply voltage 230 VAC - direct integration into the compressor drive contactor circuit

✓ Port sizes G 1/4" to G 1" - suitable from small piston compressors (G 1/2") to mid-size screw compressors (G 1/4")

🛡 Screw and piston compressor types - SCH version optimised for screw compressor pressure levels

Type overview

Type	Port	Compressor type	Voltage
ENTLAST 14 SCH	G 1/4"	Screw compressor	230 VAC
ENTLAST 12 SCH	G 1/2"	Screw compressor	230 VAC
ENTLAST 12	G 1/2"	Piston compressor	230 VAC
ENTLAST 10	G 1"	Piston compressor	230 VAC

Typical applications

Typical applications: Start-up unloading on screw and piston compressors in compressed air supply systems; protection of start capacitors and motor windings; replacement and retrofitting on Boge compressors and comparable makes; use in industrial compressed air stations and commercial workshops.