2-1/2" x 5" plate used in 6-IL in-line heater assy. Brass plate has (2) 1/2"npt holes for thermowells (purchased separately) and (1) 1/8"npt pressure switch tap, gasket included

Compact and efficient, Coates in-line spa heaters feature stainless steel tanks and replaceable incoloy heating elements.
1-1/2 x 2 inch union connections for PVC pipe

ST series heater is a compact electric spa heater that is available in an 5.5kW or 11kW version. It is equipped with a flow switch that allows operation at flow rates of 15GPM to 70GPM.
The stainless steel tank is designed to optimize heat transfer by directing the water flow over the incoloy heating elements efficiently.

Single pole rated at 25 amps with temperature rating set at 121�F. Best results are obtained when the bulb is installed in a dry well or groove tube at or immediately before the heater 12" capillary length, 5/16" bulb thickness This is a safety device! If it is found to be out of calibration, do not attempt to perform a field adjustment! Replace bad hi limit with a new one

Single pole rated at 25 amps with max temp rating at 107�F. Best results are obtained when the bulb is installed in a dry well or groove tube at or immediately before the heater. This is a safety device! If it is found to be out of calibration, do not attempt to perform a field adjustment! Replace bad thermostat with a new one Capillary Length: 12" Bulb Thickness: 5/16"