Ball Valve, KF25 flange, with wing nut clamps set1 1PCs Ball valve with KF25 flange 2 2PCs Aluminum KF25 wing nut clamps 2 2PCs Stainless steel centering rings + FKM O ring The ball valve is made of stainless steel, sealing material is Telfon Good for setup pump foreline, cheap option to shut off vacuum or isolate vacuum pump
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