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Hansen hll refrigerant float switch
http:// /library/pages/products/level-cont/float-switch.html
For Ammonia, R22, R134a and Other Approved Liquids
These Hansen refrigerant liquid level float switches
(HLL Series) are used to electrically indicate or control
a liquid level by opening or closing a SPDT switch.
Their simple, reliable design provides long life
performance for almost any application.
These refrigerant liquid level float switches are typically
installed on a vessel's liquid level column. They can
control liquid level by controlling a liquid fill solenoid
valve. Often, they are used to provide high level cutout
or alarm. In addition, they can be used to turn off
a recirculating liquid pump if a low level occurs. Other
applications include control of liquid level via a liquid
exit solenoid valve, level indication via a pilot light,
Safe Working Pressure: 400 PSIG (27 bar)
Operating Temperature: -50F to +150F (-45 C to +65 C)
FPT / 1 Butt Weld combination
Specific Gravity: 0.57 to 1.70
Electrical Switch: 120V, 240V, 10 amp SPDT
NPSM for conduit , DIn plug (3 wire
Float switches as well as tank assemblies are exactly
interchangeable with R/S LL Series float switches.
CSA/US Certified, CE Mark Available