This single piece construction also provides a rigid assembly when pinned to the disc via means of shaft pins (peened over and locked). This prevents excessive disc deflections, which maintains a constant disc/seal contact stress ensuring a bi-directional sealing valve at both low and high pressures. The valve has a double offset design providing a camming action. This eliminates excessive wear between the seat and disc-sealing interface both during the opening and closing strokes extending the sealing life of the valve.
Maintenance of the valve is quick and relatively simple. The PTFE insert, seat gasket and secondary seat can be replaced by simply unbolting the retaining ring and assembling the new parts without removing any other parts. Gland packing is simply adjusted by tightening gland nuts, which are easily accessible between the mounting legs without having to remove the adapter plate or actuator.
Fire safe and non-Fire safe: Certified Fire safe to BS 6755 part 2 and BS EN ISO 10497.
Sizes: 3” (80mm) to 48” (1200mm)
Body styles: Double Flanged, Wafer Lugged, Wafer Flangeless
Geometry: Double offset giving low unseating and seating torques electroless nickel plated spherical blade periphery is an option.
Pressure ratings: ANSI 150#, 300#. PN 10, PN 16, PN 25. Others on request
curtiss wright T-SERIES - PTFE SEALED FIRESAFE VALVE Specifications:
Pressure Nominal from (bar)
Pressure Nominal to (bar)
Certified Fire safe to BS 6755 part 2 and BS EN ISO 10497.
- Shutoff Class
Tight shut-off in both directions to API 598
- Body Style
Double Flanged, Wafer Lugged, Wafer Flangeless
- Body Material
Carbon Steel (ASTM A216 WCB), Stainless Steel (ASTM A351 CF8M), other alloys
See full specifications