Wey P/N: 4" R30/W0/316-304/S4-4/P2/T1-B2/BO-CS/ HW/A6 Description: Wey Valve Model W0 Full Flange 316 Stainless Steel Body Knife Gate Valve Flange Drilling ANSI 150 Flat Face / Tapping per MSS-SP-81 provides Bi-Directional Bubble-Tight Shutoff 304 Stainless Steel Gate, Rated for 150 psi Working Pressure EPDM Body Seat Seal, mechanically retained to prevent ?pull-out? and installed flush with bottom body bore to prevent stock build-up in Seat Area EPDM Transverse Seal Energized by TFE Green Packing, ?re-packable? while in service and under pressure (spare Packing is furnished with valve) Phenolic Scraper Blades to wipe Gate clean while opening and protect Seal from damage to prolong the life of the Seal Gate is guided for full length of the Stroke Contoured Interior Body Design promotes Flushing Action to prevent Build-Up of Deposits in Seating Area Reduced Chest Cavity in valve helps prevent Solids Build-Up in Chest Area Heavy Duty Carbon Steel Bonnet provides maximum strength to prevent damage due to operator abuse or vibrating conditions Manual Ductile Iron Non-Rising Stem Rotary Style Lockout