Pressure Tanks, Switches, Gauges

Merrill Pressure Switches

This product is available to qualified groundwater professionals only. If you are not a business, we encourage you to contact a driller, pump installer, or plumber in your local community.


• To control pump systems
• Turn pump on and off
• To keep system full of water to meet demand
Available In:
• MSP3050 – 1/4″ Female Set 30/50
• MSP4060 – 1/4″ Female Set 40/60
• MPSM43050 – 1/4″ Female 30/50, low water cut off