NRF System Lubricated Iron Body Circulators

A flanged in-line system lubricated circulating pump designed specifically for quiet operation in a closed hydronic heating system.Models: NRF-9F/LW, NRF-22, NRF-25, NRF-33, NRF-36, NRF-45. Features and Benefits: High starting torque for dependable seasonal start-ups (Up to 80% more than competing circulators), Unique B&G DuraGlide Bearing System assures years of trouble-free start-ups, Closed impeller design improves operating efficiency, DuraGlide Bearing System incorporates several components working together to eliminate seasonal freeze-up, Stabilized, heat resistant, polypropylene impeller, its closed design improves operating efficiency.
Pressure Reducing Valves

Reducing valves fill the system to a preset pressure for optimum performance. Combination Dual Unit Valves include pressure reducing valve and relief valve. Features and Benefits: Fast fill feature reduces start-up time and labor. Low inlet pressure check valve help prevent loss of system pressure if the supply water drops below system pressure. Convenient cleanable strainer is designed to prevent dirt and sediment from entering the system.Union connection available with 1/2″ male NPT thread and 1/2″ female sweat tail-piece for fast, flexible system connection. Brass body construction is highly resistant to corrosion – ideal for water systems.
Series 100 Inline Booster Pumps

The industry standard circulator for decades, Series 100 is still the one by which most others are judged. With well over 10 million units installed, the Series 100 remains a leader in applications such as hydronic heating and domestic hot water circulation.
Series 100′s three-piece, oil lubricated design provides for easy field service with bearings, shaft and seal all housed in an assembly which can be easily repaired or replaced. The Series 100 oil lubricated motor is specifically designed for the Series 100, and its resilient mounting provides quiet, dependable service with minimum annual lubrication. UL and CSA listings are standard. The design of this motor, coupled with its overall hydraulic performance, allows the Series 100 to overcome system related noise caused by valves, fittings, or piping. Models – Part Numbers are 106189, 106190, 106192LF, & 106197LF.
Series 100′s three-piece, oil lubricated design provides for easy field service with bearings, shaft and seal all housed in an assembly which can be easily repaired or replaced. The Series 100 oil lubricated motor is specifically designed for the Series 100, and its resilient mounting provides quiet, dependable service with minimum annual lubrication. UL and CSA listings are standard. The design of this motor, coupled with its overall hydraulic performance, allows the Series 100 to overcome system related noise caused by valves, fittings, or piping. Models – Part Numbers are 106189, 106190, 106192LF, & 106197LF.
Series 1510 Base Mounted End Suction Pumps

Base-mounted, end-suction Series 1510 pumps are available in 1-1/4” through 8” sizes, 1/2 HP to 150 HP at 1750 RPM and 2 HP through 150 HP at 3500 RPM. Bronze-fitted and all iron material configurations are available with flows to 4000 GPM, heads to 500 feet.I-ALERT condition monitor measures vibration and temperature at the outboard bearing and automatically indicates when pre-set levels of vibration and temperature have been exceeded, so that changes can be made before failure occurs.
Integrally cast volute foot and center drop-out spacer coupling combine to offer true back pullout capability, providing low-cost ease of maintenance. An ANSI-OSHA-compliant coupling guard shields the flexible coupler. A welded steel baseplate and internally flushed mechanical seal are standard features on this pump.
Integrally cast volute foot and center drop-out spacer coupling combine to offer true back pullout capability, providing low-cost ease of maintenance. An ANSI-OSHA-compliant coupling guard shields the flexible coupler. A welded steel baseplate and internally flushed mechanical seal are standard features on this pump.
Series 1522 Pump

Foot-mounted, close-coupled design in 3/4” through 1-1/2” sizes. 1/4 to 1 HP at 1750 RPM. Available in bronze-fitted, all-bronze and all-iron construction with flows to 115 GPM at 30 feet. The Series 1522 is a rugged yet quiet pump due to the bronze sleeve bearing provided as standard on the pump and motor. The flexible spring coupler design between the pump and motor dampens any additional noise and vibration.
Series 1531 Pump

End suction, close-coupled, foot-mounted pump available in 1-1/4” through 6” sizes. Motor size 3/4 to 50 HP at 1750 RPM, 2 to 60 HP at 3500 RPM. Available in bronze-fitted and all-iron construction with flows to 2300 GPM, heads to 400 feet. Close-coupled, space-saving economy plus rugged construction make the Series 1531 an ideal selection for a variety of horizontal and vertical mount applications. Available with the B&G standard self-flushing Carbon/Ceramic mechanical seal in 175# working pressure design.
Series 1535 Pump

Foot-mounted, end-suction, close-coupled pump available in 1” through 1-1/2” sizes. Motor sizes 1/3 to 5 HP at 3500 RPM. Available in bronze-fitted construction with flows to 240 GPM at 115 feet. This back-pullout pump offers ease of service in a close-coupled design. The pump can be mounted vertically or horizontally to provide maximum flexibility. Ball bearing design and standard internally flushed mechanical seal provide long, dependable service. Applications: Cooling towers, refrigeration, general service and industrial.