Grab Sampling Systems

If sampling challenges are costing you time and money, you're not alone. Many process analyzer sampling systems in today’s plants are not doing what they are supposed to do: deliver an uncontaminated, representative sample to the analyzer without too much delay.

The good news is that Swagelok now offers standard grab sample panel designs ready to customize to your specific needs.

Things to know about Swagelok grab sampling systems:

Designed and built with the reliable components you trust from Swagelok
Local, factory-certified experts for local fabrication and support
Versatile mounting options for easier installation
Standard sample systems can be configured using a part number table for simplified ordering
Additional instrumentation is available, including gauges, meters and flow indicators
Backed by the Swagelok Limited Lifetime Warranty

Grab Sample Module

The Swagelok grab sample module (GSM) is a sampling panel that uses sealed, metal, pressure-containing cylinders to capture either liquid or gas.

Grab Sample Liquid Systems

The Swagelok grab sample liquid (GSL) is a liquid-only sampling system for drawing fluid in a non-pressure containing bottle with a self-sealing septum cap.

Ammonia Sampler New

Swagelok’s closed-loop ammonia sampling unit is designed to remove the challenges inherent to traditional ammonia sample collection methods.

Grab Sample Modules (GSM)

The GSM uses pressure-rated sample cylinders which prevent the sample from escaping, even under pressure, and are durable to prevent accidental breakage. The GSM is the most reliable method of capturing a sample.

The GSM closed-looped sampling system pulls from a positive-pressure process and returns back to the process at a lower pressure location (e.g., upstream of a pump), using the differential pressure to drive the fluid through the sample system. This circuit draws a flow path that connects to the sampler then returns to the process or to flare.

A GSM can be left in the bypass or sample position indefinitely when using this arrangement, keeping the transport lines fresh (with zero flushing time) and ready for sample capture. A rupture disc is an available option for every GSM system. A relief valve can also be added to the sampling systems where there is additional concern regarding overpressure of the sample cylinder from temperature changes or overfilling.

Each sampling system configuration utilizes Swagelok tube fittings, with the exception of the cylinder end connections, which avoids the potential leak points of NPT connections.

Liquid-Only Sampling Systems (GSL)

A liquid-only sampling system (GSL) can be used in a number of liquid applications where the process fluid is not at risk of fractionating or evaporating when stored at atmospheric pressure. This allows the use of less expensive glass laboratory bottles to draw and store the sample. Using bottles also provides immediate feedback on the visual quality of the sample stream.

Swagelok GSL systems use the same switching valve as a GSM system to provide simplified operation for complex tasks.

The GSL systems also include Sentry Equipment’s Model MVS to draw a sample into a bottle. The MVS is equipped with a spring-return handle to prevent unintentional dispensing.

Swagelok GSL systems are designed around the use of Boston Round or media bottles but can accommodate other bottle geometries and materials.

GSL systems are assembled with Swagelok tube fittings, avoiding the potential leak points of NPT fittings.

Designed for safety

Traditional ammonia sampling methods potentially expose operators to dangerous ammonia liquid/vapor, requiring full personal protective equipment (PPE). The Swagelok ammonia sampler minimizes operator exposure and environmental impact. It can also be installed directly at the sample point, eliminating hazardous transportation and storage of anhydrous ammonia throughout the plant.

Designed for accuracy

Manual ammonia sampling processes rely on the skills and judgment of the operator, which can cause inaccuracies that may lead to unnecessary costs or even an off-spec product. In manual sampling processes, it is difficult to fill a warm residue tube precisely as ammonia boils off. It is also difficult to control the rate of evaporation, which also introduces inaccuracies. The Swagelok ammonia sampler is built to deliver consistent results.

Designed for efficiency

Evaporation also takes a significant amount of time—operators retrieve samples by hand and leave them under heat sources until results can be measured eight or more hours later. The Swagelok ammonia sampler can reduce sampling time to roughly two hours total.

Assess

Local certified associates help assess requirements, taking into account key issues such as time delay, phase change issues, and other common sample system errors.

Advise

We present the best-value option to ensure a safe, simple way to safely collect samples—and keep them in their representative state for analysis.

Configure

Using our standard panel designs as a platform, our certified local engineer works with you to configure the system. This step includes tailoring to your unique needs.

Assemble

Local technicians who undergo rigorous certification every 3 years build your panels. Their work is overseen by certified engineers. Then assemblies are tested and warrantied.

Training

Upon completion of your grab sample panels, a representative from Swagelok Netherlands can provide hands-on training to your technicians on proper use and maintenance.

Support

With 50+ local associates, we are equipped to provide an exceptional customer experience. Your local experts are always one call away.

Swagelok solutions

Assemblies

Onsite services

Training

Swagelok products

Swagelok grab sampling systems

We offer grab sampling consulting and fully built grab sample panels.

Swagelok grab sampling panel solutions