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Grab Sampling Systems

Tour this section to see designs, ways to customize, and more

Grab Sample Cylinders

A sample cylinder is required for every GSM system and should be ordered separately when purchasing a new GSM. Various configurations of sample cylinder assemblies, defined as Grab Sample Cylinders (GSC), are available.

  • Five standard cylinder sizes (150, 300, 400, 500, & 1000 cm3)
  • Multiple cylinder and valve material options
  • With or without purge bypass tube
  • Choice of quick connects
  • Accessories: Outage tubes, needle valves, rupture discs, and carrying handles (view Accessories)
  • Cylinder treatment/certification
  • Stem and body protectors
  • PTFE coated inner wall, SilcoNert® coating, or electropolished inner diameter
  • DOT or TPED approved

GSC Assembly Descriptions

Standard version

For general use or for use with GSM systems without a purge option.


Purge version

For use with GSM systems with a purge option specified.

Note: Regardless of orientation and implementation, the flow direction on all GSC isolation valves is away from the cylinder. Needle valves have a preferential shutoff direction for restraining pressure and the valve will be oriented such that it is best situated for resisting the internal pressure of the cylinder.

Next, see options and accessories available for your system

Gauges, flowmeters, and transducers; sample coolers; process connections; and more.
"Swagelok definitely added benefit with their local understanding of applications and products used onsite. This is valuable to our company in educating us about what to use and why.”

Analyzer Engineer
US Oil and Gas Refinery Company


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