BOP: BOP types are: conventional ram preventer, manual single ram cable blowout preventer, manual single ram preventer with full sealing rod, manual multifunctional single ram preventer (with full seal, half Seal, self-closing head), etc. Drive mode: manual, hydraulic End connection: flange, planting wire Working pressure: 2000PSI, 3000PSI, 5000PSI Nominal diameter: 90mm, 120mm, 179.4mm Product production basis: API 16A and related specifications Hydraulic double gate preventer