1.Halliburton type, all could change with Halliburton parts.
2.All equipments are produced according to API standard.
The Pressure Operated tester valve is a full- opening, annulus pressure-operated valve. It measures multiple closed-in pressures in cased holes where pipe manipulation is restricted and a full-opening string is required. The nitrogen chamber is charged at the surface to a selected pressure determined by surface temperature, bottomhole temperature, and bottomhole pressure. If the intended test requires a permanent packer that
uses a stinger mandrel or seal nipple, a variety of bypass tools are available, depending on field application,
to help ensure that the formations and downhole equipment are protected from excessive pressure buildup.