Repair Parts
Head Mechanisms
List Price $1,303.00 $998.29 / eachSKU: MI10666 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 $1,303.00 $998.29 / each- List Price $775.00 $494.00 / 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 $775.00 $494.00 / 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 $2,378.00 $1,691.77 / 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 $2,378.00 $1,691.77 / each - List Price $3,509.00 $2,265.00 / 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 $3,509.00 $2,265.00 / each - List Price $1,475.00 $1,130.08 / eachSKU: MI11324 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 $1,475.00 $1,130.08 / each - List Price $2,932.00 $2,085.91 / eachSKU: MI11334 in stockThe McDonnell & Miller 165300 model 94-HD is a replacement head mechanism for Series 94 and Series 194 combination low water cut-off/pump controllers for steam boilers. It includes a model number five electric switch with automatic reset. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 165300
List Price $2,932.00 $2,085.91 / each - List Price $1,497.00 $1,146.94 / eachSKU: MI1133A3 in stockMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 165302
List Price $1,497.00 $1,146.94 / each - List Price $3,913.00 $2,783.81 / eachSKU: MI11342 in stockMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 166400
List Price $3,913.00 $2,783.81 / each - List Price $1,442.00 $940.00 / eachSKU: MI114511 in stockThe McDonnell & Miller 173003 model 150S-HD is a replacement head mechanism with a snap-action, automatic reset switch. It repairs Series 150S and Series 157S combination low water cut-off and pump controllers for steam boilers. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 173003
List Price $1,442.00 $940.00 / each - List Price $1,442.00 $940.00 / eachSKU: MI11472 in stockMcDonnell & Miller 172809 model 150S-M-HD replacement head mechanism with snap-action switch assembly with manual reset repairs Series 150S-M and Series 157S-M low water cut-off pump controllers for steam boilers. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 172809
List Price $1,442.00 $940.00 / each - List Price $1,442.00 $1,104.80 / eachSKU: MI1147A7 in stock173103 McDonnell & Miller model 150S-MD-HD head mechanism with maximum differential operation for Series 150S and Series 157S low water cut-offs with the maximum differential function. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 173103
List Price $1,442.00 $1,104.80 / each - List Price $1,442.00 $1,104.80 / eachSKU: MI1147B2 in stockMcDonnell & Miller 172810 model 150S-M-MD-HD replacement head mechanism with the maximum differential operation and manual reset switch for Series 150S and Series 157S boiler controls. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 172810
List Price $1,442.00 $1,104.80 / each - List Price $1,572.00 $1,204.40 / eachSKU: MI1149BShips within 2 weeksMcDonnell & 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. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 178902
List Price $1,572.00 $1,204.40 / each - List Price $3,475.00 $2,544.93 / 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 $3,475.00 $2,544.93 / each - List Price $2,932.00 $2,085.91 / eachSKU: MI11371 in stockMcDonnell & Miller replacement head mechanism with manual reset for Model 94-M combination low water cut-off/pump controllers. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 166000
List Price $2,932.00 $2,085.91 / each - List Price $2,639.00 $2,021.88 / eachSKU: MI16202 in stockMcDonnell & Miller 162600 model 93-M-HD replacement head mechanism with manual reset for Series 93 and Series 193 combination low water cut-off and pump controller. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 162600
List Price $2,639.00 $2,021.88 / each
