CSX

The Hydroplex CSX Twin Disc is a carbon steel, quarter-turn throttle valve purpose-engineered for precise, dependable control of high-pressure liquids and gases in demanding field applications—including gas lift and fluid recovery operations. The valve’s body and control element are designed to maximize the time between services. The modular design ensures that all worn-out parts can be replaced, making the valve easy to service and fully repairable.

This valve is built to exceed your process requirements. The design is flexible enough to allow field conversions from manual to automated operations, and from single-stage to multistage pressure drop. An optional wear sleeve is available to mitigate the effects of cavitation and mechanical erosion, which are common in the fluid recovery process following pressure reduction.

Rated to 5,000 PSI and available in 1″ and 2″ NPT or 2″ ANSI flanges (150# to 1500#), the CSX is built around a modular twin disc design that maximizes time between services and keeps the valve fully repairable throughout its service life.

Serviceability Without the Downtime 

The CSX’s bottom-entry cartridge design allows operators to inspect, service, or replace trim without removing the actuator or disconnecting piping. Simply depressurize, remove the bolts, and the trim drops out. Seven trim size options give you precise flow control across a wide range of applications. All worn components are field-replaceable—keeping the valve in service and maintenance costs predictable.

Built for the Realities of Gas Service 

To address freezing caused by the Joule-Thomson effect, the CSX includes a targeted ¼” NPT methanol injection port that delivers methanol directly downstream of the trim—exactly where it’s needed, reducing waste and lowering operating costs.

Flexible by Design

Field conversions from manual to automated operation and from single-stage to multistage pressure drop are supported without valve replacement. An optional wear sleeve is available to mitigate cavitation and mechanical erosion common in post-pressure-reduction fluid recovery.

CSX Advanced Features

1. Valve Body: Durable carbon steel body.
2. Stem Assembly: The smaller shaft diameter reduces operating torque, requiring smaller and less expensive actuators.
3. Thrust Bearing: This reduces the friction induced by pressure on the valve stem.
4. Tungsten Control Discs: All valves come standard with Tungsten carbide trim available in sizes up to 3/4″.
5. Fixed Orifice Bean (Optional): The hub design allows for placement of a fixed orifice bean to achieve up to a 3-stage pressure drop within the valve. The fixed orifice bean also extends the life of the valve.
6. Wear Sleeve (Optional): The downstream wear sleeve, made of durable Stellite material, adds protection from abrasive or turbulent environments extending valve life.
7. Cartridge Assembly: Holds in the wear components of the valve and allows for easy maintenance.
8. Sensor Port: 1/8″ threaded port to allow for installation of a pressure sensor or gauge, or left open for wear detection. 
9. Wear Disc: This disc is meant to absorb energy from the change of direction of the fluid from the orifice discs to the valve outlet.
10. Direct Actuator Mounting (Not Shown): Design allows for direct mounting of several common valve actuators without the need for couplings or brackets. 
11. 1/4″ NPT Port (Not Shown): Access port for optional injection of liquids or gasses for supplemental process improvements.

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