Armstrong 174031MF-043, Model S-25, Bronze In-Line Pump Without Flanges, Series S, 1/12 HP, 115 Volts, 1 Phase, 31 GPM Max, Lead Free, Maintenance Free Design

SKU #: 174031MF-043
Brand: Armstrong
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$960.65
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FEATURES

Armstrong Series S Maintenance Free Circulator Pump

This Armstrong In-Line circulator is suitable for domestic hot water systems. It is built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction. This circulator has been used by HVAC professionals for decades because it is cost-effective, durable and easy to maintain.

Features

  • Maintenance free design which has permanently lubricated ball bearings and requires no maintenance at all
  • Radially-split body can be left in-line while servicing pump, eliminating disconnecting of pipes
  • Oversized shaft made from stainless steel
  • Balanced centrifugal impeller ensures maximum water delivery in the HVAC system
  • Proven seal design made from strong and long-lasting materials for extended operating life
  • Three piece modular construction and back pull-out design for easy replacement of wear components
  • Certified ≤ 0.25 weighted average percent lead and complies with California Health and Safety Code Section 116875 (commonly known as ab1953)

Note: Flanges are sold separately. Options include 116013-841, 116012-841, 116011-841, 116009-841.

 

BrandArmstrong
Mfg. Number174031MF-043
ModelS-25
Product TypeIn-line circulator
ApplicationDomestic water systems
SeriesS
Horsepower1/12 HP
Voltage115 Volts
Phase1
Frequency60 Hz
Speed1800 RPM
DesignThree piece
Motor TypeODP
FlangesSold separately
Maximum Flow31 GPM
Maximum Head6 ft
Pump BodyLead free bronze
Volute MaterialLead free bronze
Impeller MaterialNon-ferrous
Thermal Overload ProtectionYes
Maximum Fluid Temperature107°F
Maximum Operating Conditions125 psi at 225°F

repair-parts-image

The Armstrong S series of in-line circulator pumps is suitable for domestic hot water systems. This series is built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction. The S series has been used by HVAC professionals for decades because it is cost-effective, durable and easy to maintain. Features

  • Maintenance free design which has permanently lubricated ball bearings and requires no maintenance at all
  • Radially-split body can be left in-line while servicing pump, eliminating disconnecting of pipes
  • Oversized shaft made from stainless steel
  • Balanced centrifugal impeller ensures maximum water delivery in the HVAC system
  • Proven seal design made from strong and long-lasting materials for extended operating life
  • Three piece modular construction and back pull-out design for easy replacement of wear components
  • Certified ≤ 0.25 weighted average percent lead and complies with California Health and Safety Code Section 116875 (commonly known as ab1953)
ARMSTRONG S SERIES CIRCULATOR PUMPS

Armstrong S Series Circulator Pumps

Model Comparison Chart

Model Flanges (NPT) HP Voltage Material of Construction GPM Max. Head
S-25 Sold separately 1/12 115 Bronze 31 6'
S-35 2" 1/6 115 Cast Iron 72 11'
S-45 Sold separately 1/4 115 Bronze 109 16'
S-46 3" 1/3 115 Cast Iron 112 19'
S-55-3 3" 1/2 208-230/460 Cast Iron 121 24'
S-35 2" 1/6 115 Bronze 72 11'
S-46 3" 1/3 115 Cast Iron 112 19'
S-55-1 3" 1/2 115/230 Cast Iron 121 24'
S-55-3 3" 1/2 208-230/460 Cast Iron 121 24'
S-57-3 3" 3/4 208-230/460 Cast Iron 139 29'
S-57-3 3" 3/4 208-230/460 Cast Iron 139 29'
S-57-1 3" 3/4 115/230 Cast Iron 139 29'
S-45 Sold separately 1/4 115 Bronze 109 16'
S-55-3 3" 1/2 208-230/460 Bronze 121 24'
S-55-1 3" 1/2 115/230 Bronze 121 24'
S-69-1 3" 1 115/230 Cast Iron 160 34'
S-69-3 3" 1 208-230/460 Cast Iron 160 34'
S-57-3 3" 3/4 208-230/460 Bronze 139 29'
S-57-3 3" 3/4 208-230/460 Bronze 139 29'
S-57-1 3" 3/4 115/230 Bronze 139 29'
S-55-1 3" 1/2 115/230 Bronze 121 24'
S-55-3 3" 1/2 208-230/460 Bronze 121 24'
S-46 3" 1/3 115 Bronze 112 19'
S-57-1 3" 3/4 115/230 Bronze 139 29'
S-69-3 3" Bronze 1 208-230/460 160 34'
S-69-1 3" 1 115/230 Bronze 160 34'
PERFORMANCE CURVES

DIMENSIONS

DESIGN INFORMATION

MATERIALS OF CONSTRUCTION

REPAIR PARTS

*For a complete part listing please refer to the repair parts manual

BROCHURE
Armstrong S Series Circulator Pump Brochure
INSTALLATION MANUAL
Armstrong S Series Circulator Pump Installation Manual
REPAIR PARTS
Armstrong S Series Circulator Pump Repair Parts

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*Note: Picture is illustrative and may not reflect the actual product.*