Replacement Parts List

Boiler Control Replacement Parts

McDonnell & Miller

OILER

ONTROLS

Series 53/53-2

Water Feeder/Low Water Cut-Offs

Combination Mechanical Water Feeder/

Low Water Cut-Offs

Replacement Head Mechanisms

For Repl. Head Part Weight

Series Model No. Number Description lbs. (kg)

53-2-HD 137300 Head mechanism w/ No. 2 switch 20.5 (9.3)

53 or

53-2M-HD 137250 53-2-HD w/manual reset 20.5 (9.3)

Components (shown on page 47)

Item Part Model Weight

Number Number Number Description lbs. (kg)

1 110000 2 Low water cut-off switch 1.0 (0.5)

2 110100 2-M No. 2 w/manual reset 1.0 (0.5)

3 303100 F-26 Gasket 0.1 (.05)

4 310438 FLT-53-05 Float 4.0 (1.8)

(See note following page)

5 302900 CO-106 Cam assembly 0.1 (.05)

6 312800 37-27 Gasket 0.1 (.05)

7 310441 BA-53-05 Bellows bracket assembly 1.5 (0.7)

(includes item 3)

(See note following page)

8 342800 SA53-6 Valve assembly 3.0 (1.4)

9 312900 37-28 Gasket 0.1 (.05)

10 324435 37-101 Tetraseal O-ring 0.1 (.05)

11 340700 SA37-38 Strainer basket 0.7 (.32)

Series 53-2

Series 53

Model 53-2-HD

Model 53-2M-HD

PAGE 1
BOILER CONTROLS Boiler Control Replacement Parts McDonnell & Miller Combination Mechanical Water Feeder/ Low Water Cut-Offs Series 53/53-2 Water Feeder/Low Water Cut-Offs Series 53 Replacement Head Mechanisms For Series Repl. Head Model No. Part Number Description Weight lbs. (kg) 53-2-HD or 53-2M-HD 137300 Head mechanism w/ No. 2 switch 20.5 (9.3) 53 137250 53-2-HD w/manual reset 20.5 (9.
PAGE 2
Boiler Control Replacement Parts McDonnell & Miller BOILER CONTROLS Combination Mechanical Water Feeder/ Low Water Cut-Offs Series 53/53-2 (continued) Water Feeder/Low Water Cut-Offs Components 1 2 3 5 6 6 7 4 8 9 10 11 Note: One time float and bellows replacement is required when replacing bellows or float assemblies with date codes before February, 2005 (05B).