Head Mechanisms
Repair Parts

Head Mechanisms

Literature, diagrams and more information for Head Mechanisms
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  1. McDonnell and Miller 129502 model 42S-HD head mechanism.
    List Price $1,175.00 $900.23  / each
    SKU: MI1066
    3 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 129502
    List Price $1,175.00 $900.23  / each
  2. McDonnell and Miller 144400 model 64-HD head mechanism.
    List Price $705.00 $540.14  / each
    SKU: MI1105
    8 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 144400
    List Price $705.00 $540.14  / each
  3. McDonnell Miller 162400 model 93-HD head mechanism.
    List Price $2,145.00 $1,618.50  / each
    SKU: MI1130
    1 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 162400
    List Price $2,145.00 $1,618.50  / each
  4. McDonnell and Miller 163200 model 93-7B-HD head mechanism.
    List Price $3,165.00 $2,317.90  / each
    SKU: MI1131
    2 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 163200
    List Price $3,165.00 $2,317.90  / each
  5. McDonnell Miller 162402 93-HDLS head mechanism less switch.
    List Price $1,330.00 $1,018.98  / each
    SKU: MI1132
    4 in stock
    McDonnell & Miller 162402 model 93-HDLS head mechanism less switch for low water cut-offs and pump controllers used on steam boilers. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 162402
    List Price $1,330.00 $1,018.98  / each
  6. McDonnell and Miller 165300 model 94HD head mechanism.
    List Price $2,645.00 $1,995.77  / each
    SKU: MI1133
    5 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 165300
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    List Price $2,645.00 $1,995.77  / each
  7. McDonnell Miller 165302 model 94-HDLS head mechanism less switch.
    List Price $1,350.00 $1,034.31  / each
    SKU: MI1133A
    7 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 165302
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    List Price $1,350.00 $1,034.31  / each
  8. McDonnell and Miller 166400 model 94-7B-HD head mechanism.
    List Price $3,530.00 $2,663.55  / each
    SKU: MI1134
    3 in stock
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 166400
    List Price $3,530.00 $2,663.55  / each
  9. McDonnell Miller 173003 model 150S-HD head mechanism.
    List Price $1,300.00 $996.00  / each
    SKU: MI1145
    11 in stock
    McDonnell & Miller 173003 model 150S-HD replacement head mechanism with snap-action switch assembly repairs Series 150S and Series 157S low water cut-off pump controllers for steam boilers. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 173003
    List Price $1,300.00 $996.00  / each
  10. McDonnell Miller 172809 model 150S-M-HD head mechanism with gasket.
    List Price $1,300.00 $996.00  / each
    SKU: MI1147
    6 in stock
    McDonnell & 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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 172809
    List Price $1,300.00 $996.00  / each
  11. McDonnell Miller 173103 model 150S-MD-HD head mechanism with maximum differential operation.
    List Price $1,300.00 $996.00  / each
    SKU: MI1147A
    4 in stock
    173103 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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 173103
    List Price $1,300.00 $996.00  / each
  12. McDonnell Miller 173302 model 150S-M-MD-HD head mechanism with manual reset.
    List Price $1,300.00 $996.00  / each
    SKU: MI1147B
    2 in stock
    McDonnell & 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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 172810
    List Price $1,300.00 $996.00  / each
  13. McDonnell & Miller 178902 Model 159S-HD - Head Mechanism
    List Price $1,365.00 $1,045.80  / each
    SKU: MI1149B
    Ships within 2 weeks
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 178902
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    List Price $1,365.00 $1,045.80  / each
  14. McDonnell & Miller 166000 Model 94-M-HD - Head Mechanism
    List Price $2,645.00 $1,995.77  / each
    SKU: MI1137
    4 in stock
    McDonnell & Miller replacement head mechanism with manual reset for Model 94-M combination low water cut-off/pump controllers. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 166000
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    List Price $2,645.00 $1,995.77  / each
  15. McDonnell and Miller 162600 model 93MHD head mechanism.
    List Price $2,380.00 $1,823.45  / each
    SKU: MI1620
    3 in stock
    McDonnell & 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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 162600
    List Price $2,380.00 $1,823.45  / each
  16. McDonnell & Miller 144251 Model 64M-HD - Head Mechanism
    List Price $755.00 $578.45  / each
    SKU: MI1105A
    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. Learn More
    • Manufacturer : McDonnell & Miller
    • Part Number : 144251
    This item is obsolete. Please visit the item's page to view 0 repair parts and 3 alternate items.
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