Universal trim: 13Cr stem, wedge in CA 15 or 13Cr faced, and
CoCr alloy faced seat API Trim 8 suitable for applications up
to 850°F (454°C).
Seat face CoCr alloy hardfaced, ground and lapped to a mirror
finish.
Flexible wedge with low center stem-wedge contact, in solid
CA15 (13Cr) or hardfaced with 13Cr, SS 316, Monel or CoCr
alloy. Wedge is ground and lapped to a mirror finish and
tightly guided to prevent dragging and seat damage.
A CoCr alloy hardfaced CF8M wedge is also
available.
Non-rotating stem with precision Acme threads and burnished
finish. Double Acme for faster operation.
Body and bonnet joint accurately machined.
Body and bonnet castings are precision machined.
One-piece bonnet for better alignment and fewer parts for
Class 150 up to NPS 16 (DN 400).
Flanges:
ASME Classes: 150–300: 1⁄16” raised face
ASME Classes: 600–1500: ¼” raised face
Finish: 125–250 AARH for all valves.
Rotating stem nut is Austenitic ductile iron Gr. D-2C
renewable in line (as shown).
When handwheel is used, thrust bearings are supplied as
follows:
ASME Classes 150–300: NPS 10–12 (DN 250–300), 1 bearing
(top)
NPS 14 (DN 350) and up, two bearings
ASME Classes 600–1500: NPS 6 (DN 150) and up.