1, api 16a ram bop 2, bore dia.: 7 1/16"-26 3/4" 3. Pressure: 14mpa to 105mpa 4. Forged and casting Ram blowout preventer Hydraulically/manual operated locking mechanism. Secondary seal. Flat and side door structure or hydraulic control type flat door structure. The side door and shell are connected by triple hinges. Open and close the valve in sequence by using pressure bar(c type ram bop) The guide frame is set at the end of the side door, when the side door is opened, the ram can be pulled out along the guide rail and the ram can be replaced(d type ram bop) Pistons indicator. Concealed oil way. The cavity of ram is ellipse. Hydraulic pressure: 1200~1500psi(8.4~10.5mpa) Hydraulic connection: npt1 Working temperature: -29 Media: oil gas & drilling fluid containing h2s Ram size and type : series size pipe ram, reducing ram and cutter ram.