Tenders for Supply Of Bis Listed Semi-Automatic Stainless Steel Preventive Device With Ul Approved Clean Gas With Auto Manual Reverse Stainless Steel Valve Nas 400 Mar Having Capacity : 4 Kg And Made Of Stainless Steel 304 Grade With Indian Railway Logo On Each Unit And Asper Specification Attaches. Warranty Period: 30 Month S After The Date Of Delivery