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Heater Pressure Switches

2-PR1120A PresAirTrol Pressure Switch, SPDT, Side Spout Panel Mount, 1-5 PSI Adj., PR1120A


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Item #: 2-PR1120A
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Our Price: $17.45
Availability: Usually leaves our warehouse within 1-2 business days

Pres-Air-Trol 21 amp pressure switch PR1120A has a Radial Mount for panel mounting with a 1/8” slip barb hose SIDE water connection, and three wire terminals for common, NC and NO wires. Adjustable pressure switch is Normally Open and comes factory set at 1 psi but can be adjusted with a hex key, with a clean filter, to meet a variety of system pressures, as low as 1 psi up to 5 psi. Made in the USA by PresAir.

Pressure switches are used on spa, tub and bath heaters to measure the amount of water pressure inside of the heater, as an approximation of water flow. Pressure switches are safety devices intended to prevent heater damage and overheated water hazards. If your pressure switch is causing the heater to shut down, look for causes of low flow in and out of the heater, and remove the spa filter temporarily to improve flow. Pressure switches do fail eventually (which is why sell replacements), but first assume a flow problem, and not a switch problem.



PresAirTrol Pressure Switch, SPDT, Side Spout Panel Mount, 1-5 PSI Adj., PR1120A
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