A.W. Chesterton Company has launched its 1724 Low E Sealing System that adheres to both and control valve stem sealing requirements to meet the latest US Environmental Protection Agency (EPA) consent decrees for “Low E” valve packings. This new product offering means that a PTFE valve stem packing option is now available for the hydrocarbon and chemical industries that complies with the tightest leakage standard set by the US EPA.
With this product, Chesterton has gone through extensive testing and is able to warrant 1724 Low E Sealing System for Low E technology to 100 ppm for five years. Testing for both block and control valves resulted in average leakage rates in the single digit ppms with maximum leakage rates in the low double digits per EPA Method 21, without a retorque.
Chesterton’s 1724 Low E Sealing System has been approved and specified by several major chemical companies to meet their Low E consent decree requirements for VOC and HAP fugitive emissions.