Bell & Gossett model 3DV-1NMF 1" threaded, combination straight or angle-pattern triple-duty valve. Combined features include a positive shut-off, non-slam check valve, and system balancing. Its ductile iron body is rated to 175 psi and 250°F. This valve is made of heavy-duty cast iron and features a replaceable bronze disc with EPDM insert, a chatter-preventing spring, and brass read-out valves to allow accurate balancing.
Bell & Gossett is a division of Xylem, a spin off of ITT Industries, and is a leading manufacturer of energy efficient pumps, valves, heat exchangers, and accessories for plumbing, wastewater, and HVAC — including steam and heat transfer — applications. The company sells a variety of products, including centrifugal pumps, hydronic specialties, heat exchangers, condensate handling equipment, valves, rotors and controllers, for use in residential, commercial and institutional buildings. Bell & Gossett is known throughout the HVAC business as the industry’s educator. Their Little Red Schoolhouse, a completely equipped learning center, has trained more than 60,000 engineers, contractors and installers in the proper design, installation, and maintenance of HVAC systems.