Butterfly valves are the workhorse in a hydronic system needed to isolate flow with bubble-tight shutoff. Available in 2- to 24-inch sizes (60 – 610 mm) with Cv ranging from 144 to 33,154. Siemens butterfly valves control hot and chilled water with up to 50% glycol over a temperature range of -40° F to 250° F. Used with A-Series industrial actuators and OpenAir™ damper actuators.
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2″ – 24″ sizes (50 – 610 mm) – Full cut / Under cut discs – 2-Way / 3-Way assemblies
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ASTM A126 Class A cast iron body – 316 Stainless steel disc (2″ – 12″)
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Electronless nickel plated ductile iron disc (14″ – 24″)
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416 Stainless steel stem – Heavy duty acetal stem bearing
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High purity, peroxide cured, high temperature EPDM seat
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-40° F to continuous 250° F (-40 to 121° C) temperature range
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Nitrile butadine rubber packing – Fit ANSI 125 flange
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Molded-in resilient seat provides bubble-tight shutoff up to 175 Psi
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On/off, floating and modulating control signals
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Fail-in-place industrial actuators – Fail-safe operation with OpenAir actuators
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