b'SIGHT GLASSES - SLSG SERIES A P P E N D I X ADIAGRAM 1Bolting torque sequence: 1234567 - 8Example only, number of bolts will vary, apply the same criss cross process, gradually tightening more after each revolution.BOLTING TORQUESNPS DN BoltN-m in/lb1/2 15 35 3103/4 20 35 3101 25 35 3101 1/4 32 45 3981 1/2 40 45 3982 50 50 4432 1/2 65 50 4433 80 50 4434 100 55 4875 125 65 5756 150 65 5758 200 80 70810 Australian Pipeline Valve - Installation, Operation and Maintenance Manual'