RSV Container Valve, 2" BSP, 4 Cam, Viton® SealsThe Micro Matic CLOSED, SEALED & SECURE Container Valve proprietary keyed systems help maintain diesel exhaust fluid (DEF) purity from the manufacturer to the end-user. Robust & Durable stainless steel construction.Dry Disconnect - Less than 2 milliliters.Proprietary diesel exhaust fluid Keyed SystemCompatible with 55 gallon drums and 275/330 gallon IBCs (Tote)Contains Petroleum Equipment Institute (PEI) Recommended Viton® seal. The only On-site Filling - Closed, Sealed & Secure system for the diesel exhaust fluid (DEF) market. Specifications: Thread Type2” BSP (British Straight Pipe) Buttress Cam4 Seal MaterialViton® MaterialAISI 304 Stainless Steel For Use WithRSV 4Pin Couplers