Recirculating

• Bell & Gosset NRF Series hot water recirculators are in-line pumps constructed of cast iron with a wet rotor for hydronic heating and hot water circulation systems. Ideal for residential and light commercial applications, they are UL and cUL certified. Maximum operating pressure: 150 psi (10 bar). Maximum operating temperature: NRF-22: 240°F (115°C), NRF-33 and NRF-36: 225°F (107°C). Flange diameters range from ¾” to 1 ½”. 

• Maintenance-free hot water recirculating pumps – PL Series – Bell & Gosset, pumps specifically designed for quiet operation in hydronic, radiant, and geothermal heating and cooling systems. These in-line pumps with permanent lubrication (wet rotor) are constructed of cast iron. Max. operating pressure 150 psi (10 bar), Max. operating temperature 107°C in two capacities: 1/2 HP and 1/6 HP. 

• Comfort-Grundfos 1/25 HP recirculation pump suitable forCommercial building heating, commercial building air conditioning and commercial building recirculation. 

• VA-DAB Series hot water circulation pump for domestic applications, heating and air conditioning systems, pressurized closed or open circuit type. Operating range: from 0.5 to 3.6 m³/h with a head up to 6 m. Protection rating: IP 44. Working pressure: 10 bar. Liquid temperature range: from -10°C to +110°C 

• A, B, and D series wet rotor circulators (DAB) are designed for water circulation in residential and commercial heating and air conditioning systems. The pump body is made of cast iron, the motor housing is made of aluminum, and the impeller is made of technopolymer. The A series features threaded suction and discharge ports, the B series has flanged inlet and outlet, and the D series (double version) has flanged suction and discharge. The single-phase version has a two-pole asynchronous motor with three speeds, and the three-phase version has two speeds. The single-phase version includes built-in thermal overload protection. The double version comes standard with an automatic suction valve integrated into the discharge port to prevent water recirculation within the unit when not in operation, and a blanking flange for servicing either motor. 

• BPH/DPH and BMH/DMH-DAB wet rotor circulators are designed for water circulation in commercial and residential building applications, including air conditioning and heating. The motor shaft of the BPH/DPH (2-pole motor) and BMH/DMH (4-pole motor) models can be manually unlocked. BPH and BMH are single-motor versions, while the BMH and DMH models are dual-motor circulators. They feature flanged suction and discharge ports. All models include a drain plug. The dual-motor version comes standard with an automatic suction valve on the discharge port to prevent water recirculation when the unit is not in operation, and a blanking flange to service either motor. 

• The Evosta 2 SAN-DAB series wet rotor electronic circulator is designed for domestic hot water circulation in residential systems. It offers significant energy savings, consuming only 7W. The self-protected synchronous motor with a spherical rotor requires only a single sealing ring between the motor and the pump body. Cleaning and replacement are easy. Version R: Brass pump body with R ½” (G ½”) internal thread. Version V: Version R plus shut-off and check valve, resulting in a 1” (G 1”) external thread; fittings not included. 

• Evosta 2-DAB Series Wet Rotor Electronic Circulator: Energy-efficient electronic pump for water circulation in any domestic heating or air conditioning system. Operating range: 0.4 to 3.6 m³/h with a head of up to 6.9 meters. Liquid temperature range: -10°C to +110°C 

• The Evoplus SAN-DAB series wet rotor electronic circulator pumps have been developed for domestic hot water recirculation. Thanks to their easy and intuitive user interface, simple setup is guaranteed. They feature a backlit display on the control panel, four navigation buttons, and a cascading menu.