Piping Specialties

B&G offeres a complete line of piping specialties, including Air Separators, Expansion Tanks, Balancing Products and Pumping Accessories.

Bell & Gossett - Piping Specialties: Website

The industry founding manufacturer of boiler controls, flow switches and liquid level controls. With over 70 years of experience, McDonnell & Miller continually delivers the best performing residential, commercial and industrial liquid level and flow control products found anywhere in the world.

McDonnell & Miller-Piping: Website

Vibration isolation. Noise dampening. Thermal expansion and contraction. Pipe alignment and seismic movement. Pump connections and flow conditioning. Metraflex has been supplying piping specialty products to the commercial HVAC industry since 1958.  Manufacturers of the innovative Metraloop® expansion loop for thermal expansion and seismic movement, the Cablesphere® expansion joint, and the CRV® Flex™ and VaneFlex™ flow conditioning joints, Metraflex makes a variety of engineered piping products including expansion joints, expansion compensator, flow meters, wall penetration seals, pipe guides, pump connectors, strainers, valves and more.

Metraflex: Website

With more than 75 years of experience, Hoffman has helped keep generations of families warm and comfortable. Hoffman's wide variety of products includes traps, regulators, vents, valves, breakers, strainers and condensate pumps.

Hoffman Specialty: Website

Storing and heating of water and liquids in plumbing and heating systems as well as industrial processes has made Cemline® an industry leader. This company has manufactured custom tanks, pressure vessels, packaged water heaters and submerged coils since 1935.

Cemline® Corporation - Heat Transfer: Website


 Holby has been in business since 1930 and manufactures the Holby Tempering Valve and the Holby Monitor.  The tempering valve is rugged and built to last. Constructed entirely of bronze and copper, it is hydrostatically tested to a pressure of 300 pounds per square inch (psig).  The Holby Monitor continuously monitors and displays the cold, hot and tempered hot water temperatures and transmits an ALERT message if any water temperature exceeds custom-selected temperature limits.

Holby: Website

A Domestic Manufacturer of Temperature and Pressure Instruments, Miljoco is committed to building products of excellent quality and providing customer service at an exceptional level

Miljoco: Website