The patented Hot Bolting Clamp
™ ensures that the gasket stress is maintained even if all flange bolts are simultaneously removed. The Hot Bolting Clamp
™ is equipped with a system to counteract the pretension of the tool. This enables a fast and appropriate installation of the clamp without any risk of gasket crushing. Our experience is that a two-person team can renew the bolting on up to 20 flange connections per working shift.
• All ASME, API, DIN and EN flanges
• All sizes
• All services
• Operating pressure up to maximum rating pressure
• Operating temperature between -101°C (-150°F) and 250°C (480°F)
Statoil/Equinor qualified and included in TR3016.
Each unique Hot Bolting Clamp
™ is pressure tested to 1.5 x the flange rating on test flanges with all flange bolts removed. For a typical CL1500 flange the test pressure is 380bar (5600psi).
Burst testing of a 1.1/2″ CL600 Hot Bolting Clamp was stopped at 540barg (7000psi) without any leakage or visual clamp deformation. This is 5,1 times the maximum rating pressure for CL600.