What is a vertical separator?

What is a vertical separator?

Posted by Cameron Croft on Aug 5th 2019

What is a vertical separator?

A vertical separator is a vessel for the bulk removal of liquids or solids by gravity. Operators prefer to utilize vertical separators over other separators when the well streams have large liquid to gas ratios, constant flow, and small liquid surge characteristics (high gas/ low liquid). Vertical separators are also preferred when well streams have sizable quantities of sand, mud, or other related substances as well as process flow streams, which are characterized by large instantaneous volumes of liquid or slugs. Lastly, when there are horizontal space limitations, but little or no vertical height limitations (i.e. offshore platform), vertical separators would be a good, space-saving option.

These separators may go by many names like oil-water separator, three-phase separator, two-phase separators, but functionality is all relatively the same. With these reasons it is important to have properly functioning parts because without them it is just a pressure vessel.

What parts go to a vertical separator?

CROFT Supply.com focuses on parts that are utilized for separators dedicating an equipment category for all parts utilized for separators. Below you will find a brief description of the separator parts available on Croft Supply:

1.Liquid Level Controllers - Liquid level controllers maintain a desired level in a vessel. The displacer floats in the process fluid and as the fluid level passes to the high-level set point. The liquid level controller pilot sends signals to the dump valve to open. As the level decreases and reaches the low-level set point the pilot stops send supply gas to the dump.

2.Dump Valves - A dump valve is opened by controller to drain the liquids from a vessel.

3.Gauge Valve Sets - These valves are used when replacing a broken sight glass to isolate process fluid.

4.Sight Glass - A sight glass is a transparent glass tube that allows you to see the process fluid level inside a vessel.

5.Temperature Gauges - Temperature gauges are designed to show process temperature.

6. Thermowell - Thermowells are designed to block the process fluid and to be a connection port for temperature gauges.

7.Pressure Gauges - Pressure Gauges are designed to show process pressure.

8.Vent Caps - Vent caps are used to protect the PSV from rainwater. This vent cap also has a whistle vent integrated for low amounts of pressure relieving that is usually not noticeable.

9.Pressure Safety Valves -The pressure safety valve will open if process pressure exceeds the factory set pressure. The PSV ensures the safety of the equipment.


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