SAZ Sirius Pilot Operated Valves
SAZ Sirius PO Retrievable Pilot Operated gas lift valves are used in Intermittent flow gas lift application. During Intermittent gas lift operations, the valve controls gas pressure and its flow from the casing annulus into the tubing. A slug of fluid is displaced from the injection point to the surface. The valve maintains a large primary injection port since Intermittent gas lift requires a large volume of gas to be injected rapidly into the tubing for a short period of time to displace fluid. The control of gas during this cyclic operation is enhanced by the valve’s ability to control the spread (difference in valve opening and closing pressure). The valve uses nitrogen charged bellows to provide the closing force.