Sundyne Corp. offers a variety of circulation boiler pumps, including: LMV/BMP-311, LMV 313, LMV-333, LMV/BMP-341, LMV-801, etc. Pumps have flows ranging from 33 to 13,209 GPM, and heads ranging from 210 ft to 6,300 ft. The maximum case working pressure is 3,469 PSI, and temperatures range from -238 to 842°F. Applications include: acid transfer, synthetic fuels, seal injection, circulation, OEM, reaction circulators, dewatering, boiler feed booster, recycling services, light oils, etc.

Grainger Industrial Supply offers hot water boiler circulating pumps. Pumps come in closed and open loop configurations. Products feature a watertight seal with pipe flanges fastened to hydronic system plumbing. Pump materials include: stainless steel, silicon bronze, low lead bronze, cast iron, bronze, and brass. Pumps range in horsepower from 1/40 to 15 HP, and have a voltage range from 100 to 240. Pump face to face dimensions range from 2 1/2" to 17 1/2".

Taco, Inc. offers X-Pump Block circulating boiler pumps. Pumps have a motor speed of 3250 RPM, a motor power of 2 HP, and a maximum working pressure of 125 PSI. Pumps feature a permanent split capacitor impedance protected motor, and an NPT type connection.

Pump Express offers a variety of circulating boiler pumps, including: B&G 2 BNFI pumps and Little Giant CMD-100-3B pumps. 2 BNFI pumps feature a maximum operating temperature of 225F, a maximum working pressure of 125 PSI, and a maximum horsepower of 1 1/2 HP. Materials include: polypropylene, brass, steel, zinc, cast iron, etc. CMD-100-3B pumps feature horsepower up to 1/125 HP, flows to 180 GPH, and a 15" cord length. These pumps are ideal for air conditioning and heating applications.

AVI International, Inc. services, repairs, upgrades, manufactures, and designs boiler water circulating pumps. They conform to ISO 9003 and CSA-Z299.3 QA standards, and they utilize Union Carbide cables for XLP insulation.