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Rosewood paper grain — description and returns beneath the overlapping buy card.
As a Normally Closed (NC) switch with Single Pole Single Throw (SPST) logic
Specifically engineered for 2-way direct-acting gas shutoff valves with AC coils—including models 8040G021
specific models equipped with vent limiters must be installed in an upright/horizontal position only to ensure the limiting device functions correctly according to manufacturer specifications
verify the vacuum tubing is clear of debris and the venting system is unobstructed
this unit provides high-accuracy detection of CO levels
McDonnell & Miller 310462 Switch Assembly Els PW 29614 As a Normally Closed (NC)The McDonnell & Miller 310462 (Model SWA 150S) is a heavy duty snap action switch assembly designed for precise low water cut off and pump controller transitions. This automatic reset assembly is a critical replacement component for Series 150S and Series 157S mechanical boiler controls. Built to manage steam boiler water levels up to a maximum operating pressure of 150 psi, the SWA150S provides reliable SPDT switching to prevent dry fire conditions
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