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The Armstrong H 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 H series has been used by HVAC professionals for decades because it is cost-effective, durable, and easy to maintain. Features Standard three-piece design with sleeve - oil lubricated bearing Radially-split body can be left in-line while servicing pump, eliminating disconnecting of pipes Oversized shaft made from special alloy 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 ARMSTRONG H SERIES CIRCULATOR PUMPS Model Comparison Chart Model Flange Size (NPT) HP Voltage Phase GPM Max. Head H-32 Flanges Sold Separately 1/6 115 1 36 12' H-32 Flanges Sold Separately 1/6 115 1 36 12' H-41 1" 1/6 115 1 21 17' H-51 1" 1/4 208-230/460 3 42 24' H-52 1-1/4" 1/3 208-230/460 3 52 26' H-51 1" 1/4 115 1 42 24' H-52 1-1/4" 1/3 115 1 52 26' H-32 Flanges Sold Separately 1/6 115 1 36 12' H-53 1-1/2" 1/2 208-230/460 3 80 28' H-41 1" 1/6 115 1 21 17' H-53 1-1/2" 1/2 115 1 80 28' H-54 2" 3/4 208-230/460 3 95 28' H-54 2" 3/4 208-230/460 1 95 28' H-41 1" 1/6 115 1 21 17' H-63 1-1/2" 1/2 208-230/460 3 34 33' H-63 1-1/2" 1/2 115 1 34 33' H-64 1-1/2" 3/4 208-230/460 3 55 45' H-64 1-1/2" 3/4 115 1 55 45' H-66 2" 3/4 208-230/460 3 102 30' H-65 1-1/2" 1 208-230/460 3 55 57' H-52 1-1/4" 1/3 208-230/460 3 52 26' H-53 1-1/2" 1/2 208-230/460 3 80 28' H-51 1" 1/4 115 1 42 24' H-51 1" 1/4 208-230/460 3 42 24' H-67 2" 1 208-230/460 3 132 36' H-65 1-1/2" 1 115 1 55 57' H-52 1-1/4" 1/3 115 1 52 26' H-66 2" 3/4 115 1 102 30' H-68 2" 1-1/2 208-230/460 3 142 46' H-67 2" 1 115 1 132 36' H-53 1-1/2" 1/2 115 1 80 28' H-54 2" 3/4 208-230/460 3 95 28' H-54 2" 3/4 115 1 95 28' H-63 1-1/2" 1/2 208-230/460 3 34 33' H-63 1-1/2" 1/2 115 1 34 33' H-64 1-1/2" 3/4 208-230/460 3 55 45' H-64 1-1/2" 3/4 115 1 55 45' H-65 1-1/2" 1 208-230/460 3 55 57' H-66 2" 3/4 115 1 102 30' H-65 1-1/2" 1 115 1 55 57' H-66 2" 3/4 208-230/460 3 102 30' H-67 2" 1 208-230/460 3 132 36' H-68 2" 1-1/2 208-230/460 3 142 46' H-67 2" 1 115 1 132 36' PERFORMANCE CURVES DIMENSIONS DESIGN INFORMATION MATERIALS OF CONSTRUCTION REPAIR PARTS BROCHURE Armstrong H Series Circulator Pump Brochure INSTALLATION MANUAL Armstrong H Series Circulator Pump Installation Manual REPAIR PARTS Armstrong H Series Circulator Pump Repair Parts Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.

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 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 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 Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.

The Armstrong Compass series is an energy-efficient variable speed wet-rotor circulator. Designed to replace existing fixed speed circulators, with popular flange-to-flange dimensions, Compass can be considered a universal replacement for all circulators in its capacity range. These circulators incorporate advanced functionality to assist with your construction and service projects. The compass “auto” algorithm intelligently adapts to system demand, so you get the right setup every time and your customers enjoy comfortable room temperatures. Ultimately, compass circulators provide reliable performance, backed by a two-year warranty, with noticeable reductions in energy consumption and operating costs. Features Broad operating range, producing up to 20 feet of head and 20 USgpm flow Design Envelope technology providing sensorless demand-based control Efficient ecm motor technology and intelligent variable speed operation Easy to read display Eight different modes of operation providing versatility to cover the performance of a wide range of fixed speed circulators Flanged connection Maximum liquid temperature 230°F (110°C) Power range: 5 W to 45 W Includes check valve Applications Residential heating and cooling. For closed systems (boiler loops) ARMSTRONG COMPASS SERIES CIRCULATOR PUMPS Model Comparison Chart Model COnnection Type HP Voltage Material of Construction GPM Max. Head 20-20CI Flanged 1/17 115 Cast Iron 20 20' 20-20 SS Flanged 1/17 115 Stainless Steel 20 20' PERFORMANCE CURVES DIMENSIONS MODE OPTIONS PUMP SETTINGS TROUBLESHOOTING BROCHURE Armstrong Compass Series Circulator Pump Brochure INSTALLATION MANUAL Armstrong Compass Series Circulator Pump Installation Manual WARRANTY Armstrong Compass Series Circulator Pump Warranty Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.

The Armstrong ARMflo E.2 series of circulator pumps delivers outstanding value to designers, specifiers, contractors, wholesalers, OEMs, and building owners. The E.2 series is designed for use in a wide range of hydronic applications, including: Hot & chilled water recirculation Domestic hot water generation Snow-melt installations Radiant heating systems Geothermal heat pumps ARMflo E.2 series circulators have been re-designed to improve durability and provide enhanced protection against leakage and water damage to electrical components. New design elements include: Larger, stainless steel shaft New sealed, permanently lubricated bearings Bellows-style mechanical seal with silicon carbide wear surfaces New water slinger to protect motor against water intrusion ARMSTRONG ARMFLO E.2 SERIES CIRCULATOR PUMPS Model Comparison Chart Model Connection HP Voltage Phase GPM Max. Head E7.2 1.25" 1/6 240 1 38 26' E7.2 1.25' 1/6 120 1 38 26' E9.2 1.25" 1/6 120 1 38 42.4' E9.2 1.25" 1/6 240 1 38 42.4' E8.2 1.25" 1/6 240 1 38 34' E8.2 1.25" 1/6 120 1 38 34' E10.2 1.5" 1/6 120 1 43 28' E11.2 1.5" 1/6 120 1 45 31.9' E13.2 1.5" 1/6 120 1 54 19.7' E7.2B 1.25" 1/6 120 1 38 26' E8.2B 1.25" 1/6 120 1 38 34' E9.2B 1.25" 1/6 120 1 38 42.4' E10.2B 1.5" 1/6 120 1 43 28' E11.2B 1.5" 1/6 120 1 45 31.9' E12.2 1.25" 2/5 120 1 50 56' E14.2 1.25" 2/5 120 1 52 61' E13.2B 1.5" 1/6 120 1 54 19.7' E16.2 2" 1/6 120 1 68 16.8' E30.2 2" 2/5 120 1 130 22' E19.2 1.5" 2/5 120 1 90 23' E21.2 1.5" 2/5 120 1 90 26.5' E30.2 3" 2/5 120 1 130 22' E17.2 1.25" 2/5 120 1 65 27' E33.2 2" 2/5 120 1 143 26' E33.2 3" 2/5 120 1 143 26' E12.2B 1.25" 2/5 240 1 50 56' E12.2B 1.25" 2/5 120 1 50 56' E14.2B 1.25" 2/5 120 1 52 61' E15.2 1.25" 2/5 120 1 58 24.5' E28.2 3" 2/5 120 1 117 17' E24.2 1.5" 2/5 120 1 105 30' E22.2 1.5" 2/5 120 1 88 39.5' E29.2 3" 2/5 120 1 128 19' E23.2 1.5" 2/5 120 1 83 35.5' E19.2B 1.5" 2/5 120 1 90 23' E16.2B 2" 1/6 120 1 68 16.8' E21.2B 1.5" 2/5 120 1 90 26.5' E17.2B 1.25" 2/5 120 1 65 27' E30.2B 2" 2/5 120 1 130 22' E30.2B 3" 2/5 120 1 130 22' E33.2B 2" 2/5 120 1 143 26' E33.2B 3" 2/5 120 1 143 26' E15.2B 1.25" 2/5 120 1 58 24.5' E24.2B 1.5" 2/5 120 1 105 30' E22.2B 1.5" 2/5 120 1 88 39.5' E28.2B 3" 2/5 120 1 117 17' E29.2B 3" 2/5 120 1 128 19' E23.2B 1.5" 2/5 120 1 83 35.5' PERFORMANCE CURVES DIMENSIONS EXPLODED VIEW REPAIR PARTS BROCHURE Armstrong ARMflo E.2 Series Circulator Pump Brochure INSTRUCTIONS Armstrong ARMflo E.2 Series Circulator Pump Instructions REPAIR PARTS Armstrong ARMflo E.2 Series Circulator Pump Repair Parts Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.

The Armstrong Astro 2 series of circulator pumps is designed for closed hydronic systems. This series is intended to circulate water or glycol solutions. The Astro 2 series is also designed to work up to 230°F and 150 psi while operating quietly and requiring zero maintenance. Features Ceramic shaft and bearings Cross-reference information is printed on the box, for convenient access e-Coating on the inside of cast-iron volutes provides enhanced corrosion protection for improved reliability Flange-to-flange and bolt-to-bolt compatibility offers quick and easy exchange of competing models Plug-in terminal strip saves time High-flow check valve, is pre-installed for convenience. Where the installation does not call for a check valve, it can be removed in seconds ARMSTRONG ASTRO 2 SERIES CIRCULATOR PUMPS Model Comparison Chart Model Connection HP Voltage Material of Construction GPM Max. Head 230CI Flanged 1/25 115 Cast Iron 18 18.2' 230CI-R Flanged 1/25 115 Cast Iron 18 18.2' 250CI Flanged 1/20 115 Cast Iron 18 24' 250CI-R Flanged 1/20 115 Cast Iron 18 18.2' 210CI Flanged 115 Cast Iron 34 16.5' 250SS Flanged 1/20 115 Stainless Steel 18 24' 225BS 1/2" Sweat 115 Bronze 9 12' 230SS Flanged 1/25 115 Stainless Steel 18 18.2' 225BS 3/4" Sweat 115 Bronze 9 12' 220SSU Union 115 Stainless Steel 9 5.5' 220SSU 1/2" Sweat 115 Stainless Steel 9 5.5' 225SSU Union 115 Stainless Steel 14 12.8' 220SSU 3/4" Sweat 115 Stainless Steel 9 5.5' 280CI Flanged 115 Cast Iron 30 31.2' 280CI Flanged 230 Cast Iron 30 31.2' 290CI Flanged 115 Cast Iron 52 14.2' 286CI Flanged 230 Cast Iron 35 40' 286SS Flanged 230 Stainless Steel 35 40' 210SS Flanged 115 Stainless Steel 34 16.5' 290SS Flanged 115 Stainless Steel 52 14.2' 280SS Flanged 230 Stainless Steel 30 31.2' 280SS Flanged 115 Stainless Steel 30 31.2' PERFORMANCE CURVES DIMENSIONS SPECIFICATIONS REPAIR PARTS TROUBLESHOOTING BROCHURE Armstrong Astro 2 Series Circulator Pump Brochure INSTRUCTIONS Armstrong Astro 2 Series Circulator Pump Instructions REPAIR PARTS Armstrong Astro 2 Series Circulator Pump Repair Parts CURVES Armstrong Astro 2 Series Circulator Pump Curves Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.