초록 ▼

This disclosure is directed to a system for providing a sample. It incorporates and appropriately connected valve element working with a surrounding seat and housing. The valve element responds to pressure from the atmosphere which purges the valve element of remnants of a sample passing therethroug

This disclosure is directed to a system for providing a sample. It incorporates and appropriately connected valve element working with a surrounding seat and housing. The valve element responds to pressure from the atmosphere which purges the valve element of remnants of a sample passing therethrough so that no trace constituents are left in the valve element. The valve element is a two position, three way valve element which is rotated, thereby permitting a purge gas to flow or not flow, and it rotated to another position permitting the sample of interest to flow or not flow. A sequence of operations is defined.

대표청구항 ▼

[ What is claimed is:] [1.] A method of sampling a sample from a process fluid flow source comprising the steps of:(a) connecting a two position, three port valve between a fluid flow source to be tested for delivery of sample fluid flow into a sample receiving container;(b) operating said valve to

[ What is claimed is:] [1.] A method of sampling a sample from a process fluid flow source comprising the steps of:(a) connecting a two position, three port valve between a fluid flow source to be tested for delivery of sample fluid flow into a sample receiving container;(b) operating said valve to a first position so that a purge fluid is directed through said valve from a valve controlled source as a preliminary step;(c) operating said valve to an alternate position so that a sample of specified size is delivered through said valve and is admitted into said sample container;(d) sequentially operating said valve so that said sample container is (1) first purged with a purge fluid and (2) then the sample is delivered into said container; and(e) after filling the container with sample, then (3) flowing purge fluid into said container.