Water Treatment ComponentsLow Pressure SwitchContact Us to PurchaseFeatures Safety shutoff switch to turn off system when inlet water pressure is too low. Quick connector, easy maintenance. Specification Model Type Spec Remark HL-0160 low pressure switch, standard 5 PSI,1/4 OD, quick connect NSF certified top ApplicationSuitable for use in RO drinking systems, purifiers, water treatment systems...etc.