The WWC tubing head spool is WHI�s straight profile that accepts the WWC tubing hangers. These units are designed for heavy duty and severe service conditions or where the operator anticipates other factors which may limit the effectiveness of a tapered profile. They are especially useful in high pressures or where tubing weight makes it necessary to reduce hoop stresses in the wellhead body. Units are available in nominal flange sizes of 7 1/16" and 9" with pressure ratings to 20,000 psi.

WWC tubing head spools are provided with a restricted area packoff in the lower ID profile to isolate annulus pressure and allow for transition to higher pressures in the upper connections. The WSS secondary seal is standard for spools up to 5,000 psi and integral P seals are utilized for

10,000 through 20,000 psi equipment. The lower flange connection contains a 1/2" NPT test port, which allows positive testing of annulus seals.

Two 2 1/16" studded side outlets are standard on all tubing head spools. Other studded side outlet sizes, extended side outlets or threaded side outlets are available. Flanged outlets are threaded internally for valve removal control plugs unless otherwise specified.