OBV is a 1000 PSI W.O.G. full port 3-piece 316 stainless steel process control valve manufactured of ASTM-A351-CF8m body, ball and cap. Thrust washers and packing are PTFE. Valve is available with or without locking handles in 1/4" through 1" NPT and carries an 18-month warranty. Ogontz Corp. 2835 Terwood Rd., P.O. Box 479 Willow Grove, PA, 19090