Sample Cylinder Assembly & Inspection Services | Swagelok Thailand

Sample Cylinders

Swagelok offers a wide selection of cylinders that meet DOT and TPED standards for chemical transportation, with various options available as below

• Five standard cylinder sizes (150, 300, 400, 500, & 1000 cm³)

• Multiple cylinder and valve material options (304L, 316L and Alloy 400)

• With or without purge bypass tube

• Choice of quick connects

• Outage tubes, needle valves, rupture discs, and carrying handles 

• PTFE coated inner wall, SilcoNert® coating, or electropolished inner diameter for ultra low sulfide application (ppb level) 

• DOT or TPED approved

DOT Compliant

Comply with U.S. Department of Transportation and Canadian Standards. Offered in a wide range of double-ended and single-ended sample cylinders, and miniature sample cylinders and outage tubes. 

TPED Compliant

Meet Transportable Pressure Equipment Directive (TPED) requirements for safe sample transport in Europe. Available with cylinder valves and rupture discs which also comply with TPED specifications

Miniature Sample Cylinders

Transport low volumes of fluids and hazardous materials safely. Particularly well suited to lab use and other specialty applications due to the smaller size. Consistent wall thickness, size, and capacity. Allow easy cleaning and minimizes trapped fluids with a smooth internal neck transition

Sample Cylinder Spare Parts and Accessories

Carrying handles, outage tubes, color-coding systems, caps and plugs, and more. 

1. Outage Tubes

Outage tubes provide a vapor space of the desired volume in cylinders containing liquefied gases, so that liquid in the cylinder can expand if the temperature increases. Without enough vapor space, a small temperature increase can cause the liquid to expand and increase the pressure dramatically 

Outage tubes are welded to the male inlet end of an adapter or tee. This adapter or tee is then threaded into the female port of a sample cylinder. Outage tubes can also be welded directly to the male inlet of a Swagelok nonrotating stem needle valve. The valve is then threaded into the female port of a sample cylinder

2. Rupture Disc Units

Swagelok rupture disc units protect sample cylinders from over pressurization by venting the cylinder contents to atmosphere. The use of a rupture disc is recommended with chemicals that may rapidly expand and pressurize due to temperature changes. 

The rupture disc is welded to a body that is threaded into a valve body or a rupture disc tee and sealed by an elastomer O-ring. The rupture disc can be easily replaced without removing the valve or the tee from the cylinder

3. Carrying Handle

The carrying handle is an optional purchase that provides a convenient and safe way to carry sample cylinders. The handle is constructed of 304 stainless steel and is available for use on 300 cm3 and larger cylinders

4. Nonrotating-Stem Needle Valves

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.  The D Series is widely used due to its replaceable stem tip and compact handle

Sample Cylinder Assembly Services

No matter your sampling needs—whether it's a small or large sample cylinder, a cylinder for low-concentration sulfide applications, or one for samples that may undergo phase changes—Swagelok Thailand is ready to support you. Our experienced team offers technical consultation to help you select the most suitable equipment for your application. We also provide complete sample cylinder assembly services and inspection services to ensure your equipment is ready for use or identify if any maintenance is required.

Interested in Sample Cylinder Assembly Services? Contact the Swagelok Thailand team today!