Contains steel valve which allows you to extract a sample of the trapped headspace vapours.

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Product Description

Pressure tested to 20 PSI, these well caps prevent the loss of well gasses to the atmosphere. The Sample Port Adapter™ allows you to extract the sample without removing the cap from the well. The Sample Port Adapter™ can be attached to a perstaltic pump in order to draw out even more of the trapped headspace gasses.

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