Plug valve

Parker Instrumentation has developed a rising-plug style valve for process instrumentation applications. The design provides users with a reliable valve for applications where contaminated media can lead to premature valve failure.

Called the HRPV Series, the rising plug valve's 'straight-through' design supports higher flow rates than needle valves, helping to avoid the build-up of deposits. It additionally allows cleaning to take place by rodding. These features make it suitable for applications involving heavily contaminated media, such as those frequently encountered in oil and gas processing facilities.

The HRPV Series valve features an 8-turn actuation cycle, with a rolled spindle thread and smaller sealing area, thereby lowering the torque required when controlling high pressure fluid flows and providing a long life. Despite the valve's very high pressure capability (it is rated to 689 bar), a typical actuation torque of just 2.82 Nm is required.

The HRPV valve has a 1/4" (6.4 mm) orifice with a Cv of 1.8, but can be supplied with either 1/4 or 1/2" ports, with a range of end connections including male and female NPT, and twin-ferrule A-LOK compression tube fittings. The latter option is well suited to space- and weight-sensitive applications such as on offshore platforms, and can reduce weight and space by around 30% compared with standard threaded versions. Integral end connections also substantially reduce assembly time.