Will Call Restrictions: Due to the COVID-19 outbreak and Minnesota's "Stay at Home" executive order, only high priority, "can't wait" orders are being fulfilled on-site until at least April 30. Shipping continues as normal. Please contact us for more information.
(877) 775-7705 ~ Sorry, we're closed. Hours
Not sure if you have a State Supply account? Try to reset your password.
You don't need an account to purchase from us, but without an account you will miss out on a few important features:
McDonnell & Miller model number 42S-HD is a head mechanism for model number 42-S controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 64-HD is a head mechanism for model number 64 and 764 controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 64M-HD is a head mechanism for use with model E-11M-24V (SKU: MI1615) or model E-11M-120V (SKU: MI1616) reset switches.
McDonnell & Miller model number 93-HD is a head mechanism, with standard number 5 switch, for model number 93 and 193 controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 93-7B-HD is a head mechanism, with standard number 7B switch, for model number 93 and 193 controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model 93-HDLS head mechanism less switch.
McDonnell & Miller model number 94-HD is a head mechanism, with standard number 5 switch, for model number 94 and 194 controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 94-HDLS is a head mechanism, without standard number 5 switch, for model number 94 and 194 controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 94-7B-HD is a head mechanism, with standard number 7B switch, for model number 94 and 194 controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 150S-HD is a head mechanism for model number 150S and 157S controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 150S-M-HD is a head mechanism for model number 150S-M and 157S-M controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 150S-MD-HD is a head mechanism for model number 150S-MD and 157S-MD controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 150S-M-MD-HD is a head mechanism for model number 150S-MD and 157S-MD controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller model number 159S-HD is a head mechanism for model number 159S controls. Head mechanisms include everything except a float chamber. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
McDonnell & Miller replacement head mechanism with manual reset for Model 94-M combination low water cut-off/pump controllers.
McDonnell & Miller combination low water cut off and pump controller head mechanism with two snap-acting manual reset and SPDT switch for steam boilers with 150 psi max pressure.