The importance of stem seal configuration in ISO 15848-1 certified valves

Valve Test - Chesterton Lab (Groveland -MA)

There are many emission standards nowadays that apply to valves and it is difficult to keep track of all of these and to all understand them. Some examples of valve emission standards are the ISO 15848-1, the API 624 and the VDI 2440 standards. And besides these there are a number of standards that apply to seals only. What all of these standards have in common is that the stem seal is crucial for getting valves certified. But to get a stem seal to work correctly the design of the valve has to comply with  a number of requirements such as component strength, surface roughness and dimensional tolerances. As well the way of installing the seal is of great importance. The article gives an introduction to which factors are important to make a valve compliant. Modern emission requirements can be a challenge but by following a number of guidelines every valve manufacturer can be successful in bringing low emission valves to the market. Chesterton can be of tremendous help with this process because of the vast experience that we have already built in this field

Hans Dekker

hans.dekker@Chesterton.com

Senior Application Engineering at A.W. Chesterton Company and he is supporting the Stationary Equipment business segment in the EMEA region. Hans was the Chairman of the Packings Division for the European Sealing Association.