We can manufacture the Shaffer type Annular Bop. The size detail are as below: 7-1/16" 3000psi/5000psi 11" 3000psi/5000psi/10000psi/15000psi 13-5/8" 3000psi /5000psi/10000psi/15000psi Features Strong simple construction and space saving design with only five major components. Simple hydraulic system with only two hydraulic connections required. Wear ring on moving parts to prolong the life of the preventers . Easy servicing on field. Low operating pressure. Rugged reliable sealing elements. Steel segments reinforce sealing element. Long stripping life.
