Cylinders Are a Must For Grab Sample Systems

They are safe, strong, easy to clean, and feature several convenient options

When it comes to Grab Sample Systems, sample cylinders offer a leak-tight sample containment solution for transporting gases and liquids that are under pressure. Our cylinders come with a variety of options and accessories, to find out more click below.

Grab sample systems typically use one of two methods to transport the sample from the process line or pipeline to the lab for analysis: metal cylinders or glass bottles. Today we'll look at metal cylinders.

You'll need a cylinder any time you need to transport a liquid under pressure, and any time you need to transport gas whether it's under pressure or not. Even when you don't have to transport a liquid under pressure, it may be worth doing anyhow. Some chemicals will evaporate or fractionate if they aren't transported under pressure. That could affect the accuracy of your analysis.

Rugged construction

Our sample cylinder bodies are made of seamless tubing for consistent wall thickness, size, and capacity. The smooth internal neck transition eliminates trapped fluids. That makes them easy to clean in the lab before sending them back out into the field without having to worry about contaminating the next sample.

You have your choice of quick connect fittings, which make the cylinders easy to put in a grab sample panel so that you can extract the sample quickly.

Variety

Edmonton Valve & Fitting offers five standard cylinder sizes from 150cc to 1,000cc. You can get them with optional bypass tubes for purging. Other options include handles, rupture discs and outage tubes.

Rupture discs prevent complete depletion of the sample cylinder. Outage tubes provide a vapor space in cylinders containing liquefied gasses. That way, the liquid in the cylinder has a place to expand if the temperature rises. Without enough vapor space, even a small increase in temperature can cause the liquid to expand and dramatically increase the pressure. The length of the outage tube determines the amount of vapor space.

Internal cylinder surfaces also can be electropolished and coated with PTFE to provide a nonstick surface, which further aids in cleaning.

As more industries bring additional analytical equipment online, it becomes more important to have quality sample stations that can accurately capture the process for later analysis. A grab sample cylinder is a key component. 

Additional resources

• Let Edmonton Valve Build the System, Saving You Time and Effort
• Swagelok's Fluid Distribution Headers: Easy, Fast, and Versatile

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