VAT 613 Series - Tightening Torque Dns 40 - 50 Mm

Series 613 INSTALLATION
984360EC Edition 12.08.2022 19/
149
5.3.5 Tightening torque DNs 40 – 50mm
Tightening torques for ISO-KF flange connections depend on the type of seal which is used. Follow
recommendations of seal manufacturer.
5.3.5.1 ISO-KF Clamping connections
Clamping chain (example)
Valve size
ISO-KF ISO-KF
e.g.:
31032-KASA-0001
31034-KASA-0001
recommended
tightening torque
(Nm)
recommended
tightening torque
(lbs . ft)
DN40 / 1½ “ 5 3.7
DN50 / 2“ 6 4.5
Clamping device (example)
Valve size
ISO-KF ISO-KF
e.g.:
31032-KASE-0001
31034-KASE-0001
recommended
tightening torque
(Nm)
recommended
tightening torque
(lbs . ft)
DN40 / 1½ “ 12 9
DN50 / 2“ 12 9