bids are invited for pmhbl stations supply of 8 inch pressure balance lubricated plug valves class 600 , supply of 2 inch pressure balance lubricated plug valves class 150 , supply of 3 inch pressure balance lubricated plug valves class 150 , supply of 10 inch check valve class 600 , supply of 12 inch pressure balance lubricated plug valves class 900 , supply of 3 inch check valve class 150 , supply of 4 inch check valves class 150 , supply of 6 inch check valves class 150 , supply of 3 inch gate valves class 150 , supply of 4 inch gate valves class 150 , supply of 6 inch gate valves class 150 , cs gate valve as per api 602 total quantity : 19