Zwick Butterfly Valve
Unique Triple Offset, Conical Seating provides a true cone in cone, torque seated valve that eliminates friction and wear associated with metal seated valves.
Metal to metal seating provides zero leakage performance in the most demanding of applications. Inherently fire safe.
One piece shaft transmits the most efficient torque necessary to achieve zero leakage for many cycles.
Floating disc design guarantees the optimal position of the disc and laminated seal ring. Jamming due to thermal expansion is eliminated.
Floating disc design also provides for the lowest torque necessary to achieve zero leakage.
Multiple body styles available in ANSI 150, 300, 600, 900; double flanged (ISO-5752), lug (API-609), gate valve (ANSI B16.10), and buttweld. Sizes 3" thru 48".
Generous bearing bushing design that eliminates any bending of the shaft during torque seating.
Full bi-directional shutoff.
Numerous alloys and trims available with quick deliveries.
Zwick Valve
Quality Assurance:
ISO 9001
Testing:
API 598 Zero Leakage
API 6D Zero Leakage
Flange Drilling:
ANSI B16.5 (Sizes 3"-24")
ANSI 16.47 Series A & B (Sizes 28" & above)
Fire Test:
API 607 (4th Edit.)
Design:
ANSI 16.34