ADJUSTABLE PRESSURE FUNCTION: This is a water pump pressure control switch for perfect pressure control. Pressure switch with 30-50 psi pressure setting range activates an electrically driven water pump within a power circuit when the adjustable rising and falling thresholds are reached.<br> WIDE APPLICATION: 1/4inch Female NPT, standard water well pump replacement switch designed for use of electrically driven water well pumps of all types (Jets, Submersible, Reciprocating etc).<br> HIGH-QUALITY MATERIALS: The pressure control switch is made of high quality materials for strong strength and long durability. Large contacts for longer servicing life open on rising pressure.<br> EASY TO USE: The water pressure control is easy to use, stable in performance, protects the motor, saves power, and can be used for a long time.<br> Specifications: Internal thread 1/4 30-50PSI<br> Material: plastic metal<br> colour: grey<br> Package Contents:<br> 1 x water pressure switch<br> /<br> 2 x water pressure switch<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.