2003NF F37-100-2:2003 Railway applications - Tank wagons - Part 2 : bottom emptying devices for liquid products including vapour return.
1984NF F37-045:1984 Railway transport equipment. Tank wagon for liquid chemical products. Two-side gravity discharge unit.
1977NF F37-038:1977 RAILWAY TRANSPORT EQUIPMENT. TANK WAGONS FOR CARRYING LIQUID CHEMICAL PRODUCTS. MINIMUM SIZE REQUIREMENTS TO ENABLE FITTING OF QUICK-ACTION NOZZLES.
1968NF F37-026:1968 RAILWAY TRANSPORT EQUIPMENT. TANK WAGONS NITRIC ACID (CONCENTRATION IN EXCESS OF 95 %) TYPE. TWO-SIDED GRAVITY DISCHARGE (50 MM AND 80 MM DIAMETER).