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Heater Flow Switches

2-3032 Tecmark TDI Pressure Switch, SPNO Pilot Duty, 1/4in Comp Ftg, 1-5 PSI Adj., 3032

Tecmark TDI Pressure Switch, SPNO Pilot Duty, 1/4in Comp Ftg, 1-5 PSI Adj., 3032

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Item #: 2-3032
Retail Price: 26.66
Our Price: $23.99
Availability: Usually leaves our warehouse within 1-2 business days

Tecmark Tridelta (TDI) Stainless Steel Pressure Switch for Millivolt Gas heaters used on spas and pools, 3032. SPNO, Normally Open, 1 Amp water pressure switch has two 1/4” standard tab wire terminals, Common and NO. 1/4” brass compression fitting included to attach to a siphon loop tube, a brass or copper water tube, commonly used on older gas pool and spa heaters. Tridelta/Tecmark pressure switch 3032 is a Pilot Duty pressure switch, used on Millivolt gas heaters.

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.

Adjustable Pressure Switch comes factory set but can be adjusted from 1 to 5 psi. Pressure switches do not normally need adjustment after installation, and to avoid heater damage or overheated water, large adjustments should be avoided. 1-2 psi is the correct setting for most spas, tubs and whirlpools. High Altitude locations or spa systems located several feet Below the spa, may need 3-5 psi settings. Refer to your spa heater manual or heater documentation, for any instructions on heater pressure switch settings.

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