HVAC Butterfly Valves Boston: Wafer and Lug Type UNIVAL BWN/BLN Series for Chilled Water, Condenser Water, Heating Hot Water, Cooling Tower and Glycol Loop Isolation in Boston Mechanical Rooms
ValveAtlas supplies UNIVAL HVAC butterfly valves (BWN-0201 wafer, BWN-0301 wafer gear-box, BLN-0201 lug, BLN-0301 lug gear-box, BLN-0401 lug double-eccentric) DN50 through DN600 with ductile iron body, EPDM or NBR seat, 316 stainless stem and PN10/PN16/ANSI Class 125 flange compatibility to mechanical contractors and HVAC subs across Boston. These are industrial HVAC valves, not UL/FM fire listed — for fire service see UL/FM Fire Butterfly Valves.
Reference for Boston mechanical designers at Logan Airport (BOS), Raytheon Waltham, Prudential Tower and MIT selecting butterfly valves for chiller evaporator/condenser isolation, cooling tower loop, heating hot water main, boiler inlet/outlet, VPF plant bypass, DHW mixing valve and pool/snowmelt glycol circuits.
UNIVAL HVAC butterfly product range
BWN-0201 wafer lever DN100-DN300, BWN-0301 wafer gear-box DN350-DN600, BLN-0201 lug lever DN50-DN300, BLN-0301 lug gear-box DN100-DN600, BLN-0401 lug double-eccentric bubble-tight DN100-DN600. ASTM A536 ductile iron body, EPDM-encapsulated disc, 316 SS stem. PN16 / ANSI Class 125 / Class 150 flange match.
Why Boston mechanical contractors choose ValveAtlas HVAC butterfly
Wafer vs Lug selection expertise. Wafer (BWN) between flanges for in-line service; Lug (BLN) with threaded bolt holes for dead-end and maintainable service.
EPDM (water) or NBR (oil) seat material. Spec seat to fluid — EPDM for glycol and chilled water, NBR for hydraulic and compressor oil.
Double-eccentric for bubble-tight. BLN-0401 has offset pivot for zero-leakage class A shutoff on steam and high-pressure water mains.
Competitor substitution for Boston
Keystone Figure 221/222, Bray Series 21/22/31, Milwaukee MW-12/ML-12 and Apollo 141/142 butterfly valves all substitute one-for-one with UNIVAL BWN/BLN at matching type, size, seat and operator.
Related Boston HVAC products
See also: HVAC flanged valves, Boiler room components, HVAC check valves Boston, HVAC ball valves Boston.
Contact ValveAtlas for Boston HVAC butterfly quotation
Email BWN/BLN quotation requests with size, operator (lever/gear/double-eccentric), seat material and flange class to info@valve-atlas.com.
Why Engineers Trust ValveAtlas for Hvac Butterfly Valves Boston
ValveAtlas is the trusted hvac butterfly valves boston supplier for fire protection contractors, mechanical engineers, and industrial end users across Canada, the United States, and London, UK. Every hvac butterfly valves boston order ships with mill test certificates, UL/FM compliance letters, and dimensional drawings ready for engineer-of-record submittal. Reach the ValveAtlas team for hvac butterfly valves boston quotations, code authority liaison, and project staging support.
Related Locations
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Codes & Industry Standards
Every hvac butterfly valves boston shipment from ValveAtlas is supported by the following code and listing references: