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JONLOO plug valves are mainly available in two types--- Lubricated type and Non-Lubricated type. Lubricated plug valves will be of inverted pressure balance type only and shall be used if the product allows the use of lubricant. Non-lubricated plug valves contain a polymeric body liner or a sleeve and are limited by temperature and chemical compatibility. Thet are usually  used where maintenance needs to be kept to a minimum( e.g. sulphur and hydrogen fluoride).
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