Series 400 Spec Sheet
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Series 400 High Performance Butterfly Valve Specifications
ANSI CLASS 150 ¡V 285 psi
ANSI CLASS 300 ¡V 720 psi
All valves shall be capable of bi-directional, drop tight service to rated pressure, conforming to the design standards of ANSI B16.34 steel valves and ANSI B16.5 flange mating. Valves shall be Pratt Series 400 ANSI 150 (or ANSI 300) or approved equal.
The valve body shall be constructed of carbon steel ASTM A216 WCB (or stainless steel ASTM A351, Grade CF8M), wafer (or lug wafer) design for installation between ANSI B16.5 flanges 150# (or 300#). Laying length shall conform to MSS-SP67, latest revision. Body, when carbon steel, shall be painted with a baked on epoxy powder coating.
Seat shall be PTFE, retained in the body and be replaceable without removing the disc or stem.
The disc shall be constructed of stainless steel A351-CF8M and shall be offset to provide uninterrupted 360„a seating.
Valve shafts shall be 17-4 stainless steel. At the operator end of the valve shaft, a packing gland utilizing ¡§V¡¨ type chevron packing shall be utilized.
Valves shall be tested in accordance with ANSI B16.104 Class V.