McDonnell Miller - Series 157

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

Replacement Heads
Model Number	Part Number	Description	Weight lbs.	Price
150S-HD	173003	Head Mechanism	10.5	$529.21
150S-M-HD	173203	150S-M-HD w/ manual reset	12	$529.21
150-E-HD	171640	High Pressure Level Control	12	$Call
150-E-M-HD	171650	High Pressure Level Control Manual	12	$Call
Ordering Information
Model Number	Part Number	Description	Weight lbs.	Price
157S	173502	157 Low water cut-off w/ water column	39.7	$756.73
157-MD	173600	157 w/ maximum differential	39.7	$Call
157-A	173700	157 w/ alternate tapping	39.5	$Call
157-A-M	173800	157-A w/ manual reset	39.5	$Call
157-M	175400	157 w/ manual reset	39.7	$Call
157-M-MD	175410	157-M w/ maximum differential	39.7	$Call
157-R	176200	157 w/ alternate tapping	42	$Call
157-R-M	177300	157-R w/ manual reset	42	$Call
157-RBP-MD	176501	157 w/ 2 integral conductance probes	51	$Call
157-RL	176900	157 w/ alternate tapping	42	$Call
157E-RL-M	171636	157-RL w/ manual reset	42	$Call
Replacement Parts (View parts cut-sheet) Mercury Switches No Longer Available
Model Number	Part Number	Description	Weight lbs.	Price
SA150-125	348300	Mercury Switch, 2 wire (Repalce the Head that has the Snap Type Switch)	0.3	$Call
SA150-124	348100	Mercury Switch, 3 wire	0.14	$Call
SA150M-124	348200	Switch, 3 wire w/ Manual reset	0.3	$Call
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
SA150M-436	348900	Cover for mercury switch, manual reset only	0.5	$Call
SA150-436	326950	Cover for all other models	0.5	$50.03

Electrical Ratings
Voltage	Cut-off and Pump Circuit Rating		Pilot duty
Voltage	Full Load	Locked Rotor	Pilot duty
120 VAC	7.4	44.4	125 VA at 120 or 240 VAC
240 VAC	3.7	22.2	125 VA at 120 or 240 VAC
Alarm Circuit Rating
Voltage					Amps
120 VAC					1
240 VAC					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
157-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
157-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
157-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

Contact Us Directly:

Toll Free: 1-800-780-3776
Int'l Phone: 770-957-9599
Int'l Fax: 770-957-9563
E-Mail: Email Your Request

Mailing Address: Power Plus International
143 McDonough Parkway
McDonough, GA 30253