... EquipmentStandard or nonstandard:Standard TypeOilfield VavesSpecifications 1.high pressure ground ... high pressure ground test units High pressure ground test units ,indispensable to formation testing and oil testing, are mainly composed of wellhead control ... with Gate Valve, Choke Valve, Check Valve, Retaining Valve, Shutoff Valve, High Pressure ... high pressure ground hydraulic hose testing equipment