McDonnell Miller Series 157S

For residential, commercial, and industrial applications. For boilers of any steam capacity.
Monel bellows provides corrosion resistance.
Float chamber with integral water column provided
Snap action switches for high temperature service.
Maximum pressure 150 psi.

Replacement Heads
Model Number	Part Number	Description	Weight lbs.	Price
150S-HD 150S-M-HD 150S-MD-HD 150S-M-MD-HD	173003 173203 173103 173302	Head Mechanism w/ snap switch 150S-HD w/ manual reset 150s Maximum Differential 150S w/ manual reset & Max diff.	11 11 11 11	$529.21 $529.21 $529.21 $529.21
Ordering Information
Model Number	Part Number	Description	Weight lbs.	Price
157S 157S-MD 157S-A 157S-A-M 157S-M 157S-M-MD 157S-R 157S-R-M 157S-RBP-MD 157S-RL 157S-RL-M	173502 173603 173702 173802 175402 175412 176220 177306 176503 176902 177006	150 Low water cut-off w/ water column 157 w/ maximum differential 157 w/ alternate tapping 157-A w/ manual reset 157 w/ manual reset 157-M w/ maximum differential 157 w/ alternate tapping 157-R w/ manual reset 157 w/ 2 integral conductance probes 157 w/ alternate tapping 157-RL w/ manual reset	39.7 39.7 39.5 39.5 39.7 39.7 42 42 51 42 42	$756.73 $756.73 $756.73 $756.73 $756.73 $Call $848.46 $848.46 $Call $848.46 $848.46
Replacement Parts (View parts cut sheet)
Model Number	Part Number	Description	Weight lbs.	Price
SA150-106R	347900	Bellows Assembly	0.4	$153.33
SA150-11	347600	Float and Rod	1	$164.21
150-14H	325500	Head gasket (for raised face head flange, 8 holes), 6 pack	0.5	$29.95
EA-157-S	354106	Short electrode for 157-RBP	0.5	$131.45
EA-157-L	354107	Long electrode for 157-RBP	0.5	$131.45
PCH-G-A-2	179150	Probe level control ( Obsolete Replace with 750B-ENC & 750B-P120)	2.7	$Call
SA150-436	326950	Cover	0.5	$50.03

Electrical Ratings
	Cut-off and Pump Curcuit Rating
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
Alarm Circuit Rating
Voltage				Amps
120 VAC 240 VAC				1 1/2
Dimensions
Model	A	B	C	D	E	F	G	H	J	K	L
157	1	1/2	13 3/8	2 5/16	4 15/16	11 3/4	16	11 1/2	3 1/2	3/4	5 7/8
157S-A	1 1/4	3/4	13 3/8	2 5/16	4 15/16	11 3/4	16	11 1/2	3 1/2	3/4	5 7/8
157S-R	1	1/2	13 3/8	2 1/4	5 7/8	11 3/4	17	11 1/2	3 1/2	3/4	6 1/4
157S-RL	1 1/4	1/2	13 9/16	3 1/2	5 7/8	11 3/4	17	12 3/4	3 1/2	3/4	6 1/4
157S-RBP-MD	1	1/2	13 9/16	2 1/4	5 7/8	11 3/4	17	11 1/2	3 1/2	NA	12 1/4