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1) Design more economical, flexible,and compact fluid handling systems.2) Superior, longer-lasting in-line sealing for the inert PTFE sleeve completely surrounds the plug.3) Secure sealing with no cold-flow, deformation, or rotation of the sleeve for The sleeve is securely nestled in the valve body which provides High pressure ribs, top and bottom retention, and 360° port lips.4) No seizing. No sticking for the 360° port lips provide a self-cleaning action to remove scaling and adhering media as the plug rotates.5) There’s a fully adjustable in-line seal and dual stem seal. Bolts in the top cover provide quick and easy adjustment. Adjust out in-line leakage between shutdowns. Adjust out potential stem leakage6) VETZ professional design consisting of two passes of fire-safe stem seal, a fire-safe cover seal and a vented plug provides with an excellent fire safe and fugitive emmission prevention functions.7) Sleeved plug valve line is offered in flanged SW and NPT end body configurations, 1/2" thru 12", Class 150 and 300 and available in 2-way, multi-port, jacket and inverted types. Material include carbon steel, alloy steel, stainless steel, duplex steel, Monel and inconel etc.8) These high quality sleeved plug valves are manufactured and tested in conformance with the requirements of API 599 specifications.