CLASS 150~1500 GATE VALVE 
 OS&Y, Rising stem, Flexible Wedge 
 Bolted Bonnet, Threaded or welded seat ring 
 ASTM A216 WCB, A217 WC6, A351 CF8, A351 CF8M, 
 A351 CF3, A351 CF3M, A351 CN7M, A352 LCB 
 Standards compliance 
 Design and Manufacture: JIS B2073 B2083 
 Face to face(end to end): JIS B2002 
 Flanged connection: JIS B2212 B2214
 Pressure Temperature Rating: JIS B2073 B2083 
 Inspection and Test: JIS B2003
 A. Anti-friction ball thrust bearing: Reduces friction between mating parts to ensure smooth operation 
 B. Grub screw: Secures yoke nut in the bonnet 
 C. Grease nipple: Supplies lubricant to the mating parts.  http://www.dongjin-valve.com