When placing the weldment cover on the weldment base, it is important that the bolts are tightened in a sequence which reduces the risk of leaking when the system is put back in service. The number of bolts will vary depending on the size of the meter. The general pattern should be followed as pictured.

It is important to ensure that the O-Ring does not get pinched during this process.

Tighten the bolts following the pattern to 50% of the nominal torque. When all the bolts are torqued to 50%, they should then be torqued to the proper setting following the same pattern. Follow the torque specifications listed.

When replacing fastener elements, it is recommended to use compatible components.