McDonnell Miller Series 64

For residential, commercial, and industrial boiler applications of any steaming capacity.
Heavy Duty.
Adjustable BX outlet for easy installation.
Dual precision switches for dependable operation of the low water cut-off and alarm or electric water feeder.
Packless bellows
Optional manual reset.
1" NPT equalizing pipes required.
Maximum boiler pressure 50 psi.

Replacement Heads
Model Number	Part Number	Description	Weight lbs.	Price
64-HD	144400	Replacement Head for 64	4	$291.81
Ordering Information
Model Number	Part Number	Description	Weight lbs.	Price
64 64-A 64-B 64-M	143600 143700 143800 144250	Low water Cut-off 64 w/ quick hook-up fittings 64 w/ float block 64 w/ manual reset	11.3 18.3 11.5 12.5	$341.28 $529.68 $Call $362.93
Replacement Parts (View parts cut sheet)
Model Number	Part Number	Description	Weight lbs	Price
SA64-30	343600	Float assembly	1	$99.08
CO-12	302600	Head gasket (6 pack)	0.1	$24.75
SA64-2	343500	Bellows assembly	0.3	$112.81
67-12	318800	Gasket	0.1	$26.20
11	309100	Switch	0.5	$130.58
11-M	309151	No. 11 w/ manual reset	0.5	$169.70
11-MV	309200	No. 11 for millivolt service	0.5	$140.46
MA-259	332800*	Quick hook-up fittings	4.5	$245.23
SA259-24	351800*	Upper quick hook-up	1.7	$88.28
SA159-24	349500*	Lower quick hook-up	1.7	$91.23
SA159-17	349400*	Black "Y" assembly	2.3	$65.73
*Available for 64-A models only

Electrical Ratings
	Motor Switch Rating (Amperes) 120 VDC .5 Amp
Voltage	Full Load	Locked Rotor	Pilot duty
120 VAC 240 VAC	7.4 3.7	44.4 22.2	125 VA at 120 or 240 VAC
Dimensions
A	B	C	D	E	F
9 15/16	7 7/16	1	6 1/2	3 1/8	1
Model 64-A Dimensions
			D
A	B	C	Min.	Max.	E	F	G
2 5/8	9 15/16	4 1/2	6 7/8	13 3/8	3 1/8	1	1