ETI use 840 cage-guided valve from CCI where it is specially designed using recent advancements in control valve technology. It is used to control a wide variety of relatively clean liquids and gases at high pressure differentials. Configured with either flow-to-open or flow-to-close trims, the valve is well suited for steam, gas or liquids, where flow-to-close is typically used for liquid service and flow-to-open for steam and gas.
The series 840 valve is flexible, allowing a variety of trim types to be installed in the body. In addition, its cage-guided construction reduces plug vibration and provides stable performance throughout travel. All 840 trims have a quick change design to guarantee convenient repair and easy trim replacement. The design of the 840H (drilled-hole-cage) valve is primarily used for severe service applications requiring anti-cavitation or low-noise trim.
In most cases, high pressure drop in process conditions may cause erosion, noise or vibration, which can affect process control. The 840H is a good solution to this severe service. The flanged body design is configured to meet ISA S75.03 face-to-face dimensions. Weld end body configurations are available with socket weld ends through 2” size and buttweld ends through 16”. The CCI MSD-II spring-diaphragm actuator is standard for this product and is pre-selected by valve size. Built in reverse (spring close) or direct (spring open) acting configurations, this unit provides control and seat loading in line with industry values.