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There are 4 products.

Laboratory Ball Valve

Designed with different sizes, designs, and strengths, the laboratory ball valves provide safety against unintentional valve activation while enabling different locking modes. Made with superior materials, these Praher pressure relief valves were made with EPDM Orings, ¼” through 4” sizes, and PTFE seats. View the full list below to find the industrial valve for you, and if you have any questions concerning any of our items, please contact us at or chat with us live.