LF37 diaphragm pressure switch is available for various sumps, effluent, and sewage application to control the liquid level. Various switch settings are available for to turn-on or turn-off the pump. The diaphragm pressure sensing design make it more reliable than traditional float ball mechanism.


Series No.:  LF37
Medium : Water, or other non-hazardous liquids
Basic function Diaphragm pressure switch operation:
provide water level signals to appliance control, level value can   be set on customer request
Electrical data:  13.8A, 125VAC
10A, 250VAC
3/4HP @ 125/250VAC
Ambition Temperature:  -10~85C
Terminal:  6.35 x 0.8 blade, #8-32 screw


Model Turn-on Level Turn-Off Level
LF37-1 9" 4"
LF37-2 9-1/4" 2-3/4"
LF37-3 12-7/16" 3-15/16"
LF37-4 12-7/8" 4-1/4"
LF37-5 14" 5-1/2"
LF37-6 12-1/4" 3-3/4"
LF37-7 14-1/4" 5-3/4"
LF37-8 17-9/16" 5-1/16"