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Armstrong Inline Circulating Pumps
Armstrong Series S & H in-line circulating pumps are ideal for use in hydronic heating and cooling, domestic water systems, multi-stage zoning, and general industrial service. The Armstrong S & H series pumps are available with either cast iron or bronze bodies. Give us a call toll-free for help on which pump is right for your application.
Body: Radially-split body can be left in the line while servicing the pump, eliminating needless disconnecting of pipes.
Oversized Shaft: ARMSTRONG circulating pumps have oversized shafts of special alloy steel, machined to exacting tolerances. Shafts have integral thrust collars, heat treated to provide long life under severe duty conditions.
Centrifugal Impeller: Balanced impeller of centrifugal design ensures maximum water delivery.
Positive Mechancial Seal: A tried and proven method of preventing water leakage, the well-known “ARMSEAL” construction is an often imitated feature of the ARMSTRONG circulator. Made of long-lasting, hardwearing materials, it ensures many years of noise-free, trouble-free service.
Modular Construction: Armstrong Models S-25 through S-57 and H-32 through H-54 feature the unique ARMSTRONG shaft and bearing module which fits all of these models for ease of serviceability and reduced inventory costs.
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| Part Name |
Iron Body Pump |
Bronze Body Pump |
| Bronze-Fitted Construction |
| Volute |
Cast Iron |
Bronze |
| Impeller |
S-25 to S-57 |
Non-Ferrous |
Non-Ferrous |
| H-32 to H-54 |
Non-Ferrous |
Non-Ferrous |
| S-69 |
Brass-Stamped |
Brass-Stamped |
| H-63 to H-68 |
Cast Bronze |
Cast Bronze |
| Shaft |
Alloy Steel-Copper Sleeve |
Alloy Steel-Copper Sleeve |
| Mechanical Seal Assembly |
Carbon Brass Trim - Ceramic Seat | |
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Armstrong Series S & H Pumps |
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Bronze Fitted Construction |
All Bronze Construction |
| Model No. |
Motor HP |
Flg Size |
Wt |
Item No. |
Price |
Item No. |
Price |
S-25
S-35
S-45
S-46
H-32
H-41
S-55-1
S-55-3
S-57-1
S-57-3
S-69-1
S-69-3
Astro 30 & 30B
Astro 50 & 50B |
1/12
1/6
1/4
1/3
1/6
1/6
1/2 1PH
1/2 3PH
3/4 1PH
3/4 3PH
1 1PH
1 3PH |
Less Flgs
2"
Less Flgs
3"
Less Flgs
1"
3"
3"
3"
3"
3"
3" |
19
38
45
51
30
34
82
74
82
76
130
125 |
174031-013
174033-013
174036-113
174037-113
174034-013
174035-113
106284-132
106284-136
106285-132
106285-136
116531-132
116525-136
110123-005
110123-006 |
Call |
174031-043
174033-043
174036-143
174037-143
174034-043
174035-143
106284-133
106284-137
106285-133
106285-137
116532-133
116536-137
110123-007
110123-008 |
Call |
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Stock Sizes H-51 to H-68 Bronze Fitted Construction |
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Single Phase-Resilient Mount |
Three Phase-Rigid Mount |
| Model No. |
Motor HP |
Flg Size |
Wt |
Item No. |
Price |
Item No. |
Price |
H-51
H-52
H-53
H-54
H-63
H-64
H-65
H-66
H-67
H-68 |
1/4
1/3
1/2
3/4
1/2
3/4
1
3/4
1
1 1/2 |
1"
1-1/4"
1-1/2"
2"
1-1/2"
1-1/2"
1-1/2"
2"
2"
2" |
48
48
58
68
86
89
92
110
115
120 |
116431-132
116435-132
116439-132
116451-132
116463-132
116475-132
116487-132
116499-132
116511-132
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Call |
110119-100
110119-102
116443-136
116455-136
116467-136
116479-136
116491-136
116503-136
116515-136
116523-136 |
Call |
| Stock Sizes H-51 to H-68 All Bronze Construction |
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Single Phase-Resilient Mount |
Three Phase-Rigid Mount |
| Model No. |
Motor HP |
Flg Size |
Wt |
Item No. |
Price |
Item No. |
Price |
H-51
H-52
H-53
H-54
H-63
H-64
H-65
H-66
H-67
H-68 |
1/4
1/3
1/2
3/4
1/2
3/4
1
3/4
1
1 1/2 |
1"
1-1/4"
1-1/2"
2"
1-1/2"
1-1/2"
1-1/2"
2"
2"
2" |
48
48
58
68
86
89
92
110
115
120 |
116432-133
116436-133
116440-133
116452-133
116464-133
116476-133
116488-133
116500-133
116512-133
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Call |
110119-101
110119-103
116444-137
116456-137
116468-137
116480-137
116492-137
116504-137
116516-137
116524-137 | |
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