Armstrong Circulating Pumps
Armstrong Inline Circulating Pumps for Boiler Feed, Circulating, and Hydronic Systems

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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.
 

S Series Pump CurveH Series Pump CurveS & H Pump and Motor Data
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
       

Armstrong Series S & H Pumps

  Bronze Fitted Construction All Bronze Construction
Model No. Motor HP Flg Size Wt Item No. Item No.
S-25 1/12 Less Flgs 19 174031-013 174031-043
S-35 1/6 2" 38 174033-013 174033-043
S-45 1/4 Less Flgs 45 174036-113 174036-143
S-46 1/3 3" 51 174037-113 174037-143
H-32 1/6 Less Flgs 30 174034-013 174034-043
H-41 1/6 1" 34 174035-113 174035-143
S-55-1 1/2 1PH 3" 82 106284-132 106284-133
S-55-3 1/2 3PH 3" 74 106284-136 106284-137
S-57-1 3/4 1PH 3" 82 106285-132 106285-133
S-57-3 3/4 3PH 3" 76 106285-136 106285-137
S-69-1 1 1PH 3" 130 116531-132 116532-133
S-69-3 1 3PH 3" 125 116525-136 116536-137
Astro 30 & 30B       110123-005  110123-007
Astro 50 & 50B       110123-006 110123-008

Stock Sizes H-51 to H-68 Bronze Fitted Construction

  Single Phase-Resilient Mount Three Phase-Rigid Mount
Model No. Motor HP Flg Size Wt Item No. Item No.
H-51 1/4 1" 48 116431-132 110119-100
H-52 1/3 1-1/4" 48 116435-132 110119-102
H-53 1/2 1-1/2" 58 116439-132 116443-136
H-54 3/4 2" 68 116451-132 116455-136
H-63 1/2 1-1/2" 86 116463-132 116467-136
H-64 3/4 1-1/2" 89 116475-132 116479-136
H-65 1 1-1/2" 92 116487-132 116491-136
H-66 3/4 2" 110 116499-132 116503-136
H-67 1 2" 115 116511-132 116515-136
H-68 1 1/2 2" 120   116523-136
Stock Sizes H-51 to H-68 All Bronze Construction
  Single Phase-Resilient Mount Three Phase-Rigid Mount
Model No. Motor HP Flg Size Wt Item No. Item No.
H-51 1/4 1" 48 116432-133 110119-101
H-52 1/3 1-1/4" 48 116436-133 110119-103
H-53 1/2 1-1/2" 58 116440-133 116444-137
H-54 3/4 2" 68 116452-133 116456-137
H-63 1/2 1-1/2" 86 116464-133 116468-137
H-64 3/4 1-1/2" 89 116476-133 116480-137
H-65 1 1-1/2" 92 116488-133 116492-137
H-66 3/4 2" 110 116500-133 116504-137
H-67 1 2" 115 116512-133 116516-137
H-68 1 1/2 2" 120   116524-137

 

Armstrong Isolator Valve

Needing to replace an Armstrong pump without all the hassle? ...
Check out our ISOLATOR Valve for use with inline circulators.

Armstrong Isolator Disconnect Valve

  Also available from Armstrong Pump:  

Base Mounted Pumps

Motor Mounted Pumps

Vertical Inline Pumps


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

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