Body and cover: Precision machined castings.
Exclusive: Disc shaft does not penetrate body.
Body and cover joint: Accurately machined,
fully-enclosed gasket.
Disc: Robust one-piece construction to withstand the severe shock of
check valve service. Hardfaced with 13Cr, CoCr alloy, SS 316, or Monel,
ground and lapped to a mirror finish. Sizes NPS 2–6 (DN 50–150) may
have solid CA 15 (13Cr) disc. SS 316 disc with CoCr alloy facing also
available.
Disc assembly: Non-rotating disc is fastened securely to disc hanger
with a lock nut and cotter pin. Disc hanger is supported on a sturdy
disc carrier hinge pin of excellent bearing qualities. All parts are
accessible from top for easy servicing.
Flanges:
ASME Classes 150–300: 1⁄16" raised face.
ASME Classes 600–1500: 1⁄4" raised face.
Finish 125–250 AARH for all valves.
