HERMetic Sampler GT is a precision-engineered portable gas-tight sampling system designed for safe and representative closed sampling of hydrocarbons and liquids in marine, petroleum, terminal, refinery, and industrial tank applications. Developed for applications where controlled sampling is required, the HERMetic Sampler GT provides a reliable method of collecting liquid samples while helping prevent vapour release and exposure to fumes during the sampling operation.
The system is designed for hydrocarbon liquids presenting fire, health, or air-pollution hazards and provides a practical solution for closed tank sampling. With a sampling capacity of approximately 0.47 litre, the HERMetic Sampler GT can be equipped with different sampling bottles for zone, spot, bottom, or running sampling, allowing operators to collect samples from the required location within the tank.
The HERMetic Sampler GT is designed for connection to 2-inch HERMetic Compact Valves using suitable adaptors and incorporates a 30 m / 100 ft graduated measuring tape for sampling-height measurement. The sampler uses a robust construction incorporating AISI 316 stainless steel, PTFE, and PVDF, with FKM gasket material for the standard GT configuration.
The HERMetic Sampler GT operates through a closed, gas-tight tank connection. The sampler housing is mounted on a suitable 2-inch HERMetic Compact Valve using an appropriate adaptor, allowing the sampling operation to be performed without directly opening the tank to the atmosphere.
The selected sampling bottle is lowered into the tank using the graduated measuring tape to the required sampling position. Depending on the selected bottle, the system can obtain zone, spot, bottom, or running samples, providing flexibility for different hydrocarbon sampling requirements.
Once the sampling bottle has collected the required liquid, the sample is transferred from the sampling bottle into a laboratory bottle. The HERMetic Sampler GT uses gravity-based transfer through the sampler’s special distribution block, providing a straightforward method for transferring the collected sample for laboratory analysis.
The gas-tight construction helps avoid pressure release and vapour emission from the tank, while reducing operator exposure to fumes during sampling. The graduated tape also enables operators to determine and record the sampling height inside the tank.
Looking for a reliable HERMetic Sampler GT supplier for your marine vessel, petroleum terminal, refinery, tank farm, or hydrocarbon storage facility?
Contact Swift Marine Tech Service for HERMetic Sampler GT supply, spare parts, sampling bottles, accessories, technical consultation, maintenance assistance, and worldwide delivery.
Our technical team can assist with selecting the appropriate HERMetic Sampler GT configuration, sampling bottle, measuring tape, valve adaptor, replacement components, and accessories according to your application requirements.



The HERMetic Sampler GT is a professional portable gas-tight sampling instrument designed for closed sampling of hydrocarbon liquids where vapour release and operator exposure to tank fumes need to be minimized. The system is particularly suitable for marine vessels, petroleum terminals, refineries, tank farms, and other hydrocarbon storage facilities.
By combining a gas-tight sampler housing, graduated measuring tape, sampling bottle, distribution block, and closed tank connection, the HERMetic Sampler GT provides operators with a practical solution for collecting representative liquid samples while maintaining controlled sampling conditions.
The system is particularly suitable for hydrocarbon applications where the liquid may present a fire, health, or air-pollution hazard. Its gas-tight construction is designed to help prevent vapour emission and pressure release from the tank during the sampling operation.
The HERMetic Sampler GT is designed for installation on 2-inch HERMetic Compact Valves using suitable adaptors. The quick-connect arrangement allows the portable sampler to be connected to the tank’s sampling connection for controlled sampling operations. Adapters for other compatible valves are also available.
The sampler is delivered with a zone sampling bottle, while spot, bottom, and running sampling bottles are available according to the required sampling procedure. This flexibility allows operators to select the appropriate sampling method for different tank measurement and quality-control requirements.
The sampling bottle provides a capacity of approximately 0.47 litre, allowing a suitable liquid volume to be collected for subsequent laboratory analysis. The 30 m / 100 ft graduated tape provides sampling-height measurement and allows the bottle to be positioned at the required location inside the tank.
After the sample has been collected, liquid transfer from the sampling bottle to the laboratory bottle is performed by gravity through the special distribution block. This provides a simple and controlled method of transferring the collected hydrocarbon sample for further inspection and analysis.
The instrument is constructed using AISI 316 stainless steel, PTFE, and PVDF, with FKM gasket material for the standard HERMetic Sampler GT. This construction is designed for reliable operation in demanding industrial and marine sampling environments.