Control Parts
McDonnell & Miller Head Mechanisms
List Price $3,260.00 $2,497.66 / eachSKU: MM163300Ships within 8 weeksThe McDonnell & Miller 163300 model 93-7B-M-HD is a replacement head mechanism with a proportioning control 7B-M switch with manual reset. Explore More- Manufacturer : McDonnell & Miller
- Part Number : 163300
List Price $3,260.00 $2,497.66 / each- List Price $1,545.00 $1,183.71 / eachSKU: MI10403 in stockMcDonnell & Miller model number 25A-HD is a head mechanism for model number 25-A 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 127100
List Price $1,545.00 $1,183.71 / each - List Price $1,175.00 $900.23 / eachSKU: MI10664 in stockMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 129502
List Price $1,175.00 $900.23 / each - List Price $1,625.00 $1,245.00 / eachSKU: MI10752 in stockMcDonnell & Miller model number 51-HD is a head mechanism for model number 51 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 134900
List Price $1,625.00 $1,245.00 / each - List Price $1,890.00 $1,448.03 / eachSKU: MI10803 in stockMcDonnell & Miller model number 51-2-HD is a head mechanism for model number 51-2 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 135100
List Price $1,890.00 $1,448.03 / each - List Price $1,890.00 $1,448.03 / eachSKU: MI10822 in stockMcDonnell & Miller model number 51-2M-HD is a head mechanism for model number 51-2M 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 135300
List Price $1,890.00 $1,448.03 / each - List Price $2,170.00 $1,637.36 / eachSKU: MI1083Ships within 1 business daysMcDonnell & Miller model number 51S-2M-HD is a head mechanism for model number 51S-2M 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 136250
List Price $2,170.00 $1,637.36 / each - List Price $1,910.00 $1,463.35 / eachSKU: MI10852 in stockMcDonnell & Miller model number 51-S-HD is a head mechanism for model number 51-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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 135800
List Price $1,910.00 $1,463.35 / each - List Price $2,170.00 $1,637.36 / eachSKU: MI10871 in stockMcDonnell & Miller model number 51-S-2-HD is a head mechanism for model number 51-S-2 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 136200
List Price $2,170.00 $1,637.36 / each - $0.00 / eachSKU: MI1090Limited stock available. Please contact us via email or telephone. The McDonnell & Miller 137000 model 53-HD is a head mechanism for model number 53 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 137000
- List Price $2,185.00 $1,969.70 / eachSKU: MI10932 in stockMcDonnell & Miller model number 53-2-HD is a head mechanism for model number 53-2 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 137300
List Price $2,185.00 $1,969.70 / each - $0.00 / eachSKU: MI1093ALimited stock available. Please contact us via email or telephone. McDonnell & Miller 137250 model 53-2M-HD is a head mechanism for model number 53-2M 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 137250
- List Price $640.00 $490.34 / eachSKU: MI10955 in stockMcDonnell & Miller model number 61-HD is a head mechanism for model number 61 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 140300
List Price $640.00 $490.34 / each - List Price $860.00 $658.89 / eachSKU: MI11002 in stockMcDonnell & Miller model number 63-HD is a head mechanism for model number 63 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 142600
List Price $860.00 $658.89 / each - List Price $860.00 $658.89 / eachSKU: MI11038 in stockThe McDonnell & Miller 143200 model 63-M-HD is a replacement head mechanism with a manual reset switch. It repairs Series 63 low water cut-offs for steam and hot water boilers. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 143200
List Price $860.00 $658.89 / each - List Price $705.00 $540.14 / eachSKU: MI11056 in stockMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 144400
List Price $705.00 $540.14 / each - $0.00 / eachSKU: MI1105AThe McDonnell & Miller 144251 model 64-M-HD is a replacement head mechanism with a manual reset switch. It repairs Series 64 low water cut-offs with manual resets. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 144251
- List Price $2,145.00 $1,618.50 / eachSKU: MI11303 in stockMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 162400
List Price $2,145.00 $1,618.50 / each - List Price $3,165.00 $2,424.88 / eachSKU: MI11311 in stockMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 163200
List Price $3,165.00 $2,424.88 / each - List Price $1,330.00 $1,018.98 / eachSKU: MI11323 in stockMcDonnell & Miller 162402 model 93-HDLS head mechanism less switch for low water cut-offs and pump controllers used on steam boilers. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 162402
List Price $1,330.00 $1,018.98 / each
