The Casing Head Spool has a top bowl to accommodate the casing hanger.
The spool also has a bottom bowl with a packoff seal to accommodate various
types of secondary seals, and a bottom flange or clamp hub for mounting it
on top of a casing head or previous spool. Outlets are provided for annular
access. Multiple casing spools may be stacked to hang intermediate and
production casing strings.
Casing Head Spools provide interchangeability of casing hanger types. If a
bowl protector is required, a hold down flange with lock screws can be used.
Types C21, C22, C29
Top Flange Size Range 7”-30”
Bottom Flange Size Range 9”-30”
Secondary Seal Types P-Seals, FS-Seals, and X-bushings
Outlet Preparation Studded Face (Including VR Plug Prep.)
gate valve
