Armstrong Astro 20B075S-T 1/25 HP Recirculator Pump with Timer (110123-241) Armstrong Astro 20B075S-T Connection: Sweat - 3/4" Armstrong Astro 20B075S-T Overview: The Armstrong Astro 20B075S-T is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 20B075S-T Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 20B075S-T Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 20B075S-T Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 25B075S-T 1/25 HP Recirculator Pump with Timer (110123-243) Armstrong Astro 25B075S-T Connection: Sweat - 3/4" Armstrong Astro 25B075S-T Overview: The Armstrong Astro 25B075S-T is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 25B075S-T Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 25B075S-T Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 25B075S-T Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 20B050S-T 1/25 HP Recirculator Pump with Timer (110123-240) Armstrong Astro 20B050S-T Connection: Sweat - 1/2" Armstrong Astro 20B050S-T Overview: The Armstrong Astro 20B050S-T is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 20B050S-T Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 20B050S-T Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 20B050S-T Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 25B050S-T 1/25 HP Recirculator Pump with Timer (110123-242) Armstrong Astro 25B050S-T Connection: Sweat - 1/2" Armstrong Astro 25B050S-T Overview: The Armstrong Astro 25B050S-T is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 25B050S-T Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 25B050S-T Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 25B050S-T Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 20B050S-TA 1/25 HP Recirculator Pump with Timer and Aquastat (110123-142) Armstrong Astro 20B050S-TA Connection: Sweat - 1/2" Armstrong Astro 20B050S-TA Overview: The Armstrong Astro 20B050S-TA is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 20B050S-TA Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 20B050S-TA Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 20B050S-TA Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 50B 1/20 HP Recirculator Pump (110123-008) Armstrong Astro 50B Connection: Flange - (2) 1/2" diameter bolt holes. Armstrong Astro 50B Overview: The Armstrong Astro 50B is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 50B Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 50B Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 50B Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM * Flanges not included.

Armstrong Astro 30B 1/25 HP Recirculator Pump (110123-006) Armstrong Astro 30B Connection: Flange - (2) 1/2" diameter bolt holes. Armstrong Astro 30B Overview: The Armstrong Astro 30B is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 30B Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 30B Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 30B Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM * Flanges not included.

Armstrong Astro 25BU 1/25 HP Recirculator Pump (110123-010) Armstrong Astro 25BU Connection: Union - 1-1/4" NPSM Armstrong Astro 25BU Overview: The Armstrong Astro 25BU is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 25BU Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 25BU Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 25BU Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 20BU 1/25 HP Recirculator Pump (110123-009) Armstrong Astro 20BU Connection: Union - 1-1/4" NPSM Armstrong Astro 20BU Overview: The Armstrong Astro 20BU is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 20BU Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 20BU Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 20BU Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 20BS 1/25 HP 3/4" Recirculator Pump (110123-002) Armstrong Astro 20BS Connection: Sweat - 3/4" Armstrong Astro 20BS Overview: The Armstrong Astro 20BS is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 20BS Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 20BS Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 20BS Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM

Armstrong Astro 25BS 1/25 HP 3/4" Recirculator Pump (110123-004) Armstrong Astro 25BS Connection: Sweat - 3/4" Armstrong Astro 25BS Overview: The Armstrong Astro 20BS is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 25BS 1/25 HP 3/4" Recirculator Pump (110123-004) Features: • Efficient/Quiet Operation • Universal Flange to Flange Dimension • Cast Iron or All Bronze Construction • UL and CSA Listed • No mechanical seals to leak • No couplers to break • No lubrication • Noryl impeller • Vent plug for initial purging if required • Stainless Steel shaft • Ethylene Propylene gaskets • Impedance protected motor Armstrong Astro 25BS 1/25 HP 3/4" Recirculator Pump (110123-004) Technical Data: • Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) • Head Range: 0 to 10 ft. • Motor: 115 V, single phase, 60 Hz • Max. Fluid Temperature*: 230°F (110°C) • Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 25BS 1/25 HP 3/4" Recirculator Pump (110123-004) Materials of Construction: • Pump Body: Cast Iron (closed systems), Bronze (open systems) • Impeller: Polypropylene (Glass Filled) • Shaft: Stainless Steel • Bearings: Graphite • Gasket Material: EPDM

Armstrong Astro 20BS 1/25 HP 1/2" Recirculator Pump (110123-001) Armstrong Astro 20BS Connection: Sweat - 1/2" Armstrong Astro 20BS Overview: The Armstrong Astro 20BS is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. The Astro series is available in two models for residential, small industrial and commercial installations. Choose from cast iron or bronze models for solar and domestic applications. Armstrong Astro 20BS Design Features: Efficient/Quiet Operation Universal Flange to Flange Dimension Cast Iron or All Bronze Construction UL and CSA Listed No mechanical seals to leak No couplers to break No lubrication Noryl impeller Vent plug for initial purging if required Stainless Steel shaft Ethylene Propylene gaskets Impedance protected motor Armstrong Astro 20BS Technical Data: Flow Range: 0 to 20 USgpm (0 to 1.26 L/s) Head Range: 0 to 32 ft. (0 to 9.8 m) Motor: 115 V, single phase, 60 Hz Max. Fluid Temperature*: 230°F (110°C) Max. Working Pressure: 150 psi (1000 kPa) Armstrong Astro 20BS Materials of Construction: Pump Body: Cast Iron (closed systems), Bronze (open systems) Impeller: Polypropylene (Glass Filled) Shaft: Stainless Steel Bearings: Graphite Gasket Material: EPDM