Precautions and requirements when assembling expansion joints.

The expansion joint is a new product that connects machines and equipment such as pumps, valves, pipelines and pipelines, and connects them to each other according to bolts, making them into a whole and having a certain offset, so that they can be adjusted according to the actual construction specifications when they are used for maintenance, and when they are in operation, they can transmit radial impetus back to all pipeline system software. That not only improves the working capacity, but also has a certain protective effect on the installation of pipelines such as pumps and valves. Be sure to place the expansion joint before assembling, and avoid random bumping.
The construction length of the expansion joint at the factory is small length, when installed, pull to the installation length.
When the length between pipelines exceeds the installation length of the expansion valve, please adjust the pipeline spacing, do not force pull the line expansion valve to prevent the destruction of the expansion valve.
expansion joints can be installed in any part, for temperature compensation, after the pipeline construction is carried out, support frames need to be added along both sides of the pipeline orientation to avoid pulling out the expansion tube of the expansion type valve, the support force of the support frames is calculated according to the following formula, and the removal of the support frames is prohibited during operation
Expansion joints do not do temperature compensation with the same time, only do the installation of disassembly and replacement, maintenance valve convenient use, can be positioned with through bolts, symmetrical clamping telescopic flange butterfly valve to avoid the expansion tube pulled out, destroy the expansion butterfly valve and pipeline equipment or housing construction. The bolt diameter can be measured in accordance with the flange bolt diameter, its bolt compressive strength and bear the experimental working pressure and pipeline tensile strength, calculated according to the above formula, and the operation period bolt is prohibited to remove.
The pipeline installation site prohibits random disassembly and disassembly of the expansion type flange butterfly valve.
Flange fixing bolts should be tightened symmetrically, do not force tightening flange fixing bolts on one side
Should be installed after the regulating valve; not to be installed at the corner of the pipeline or the end of the pipeline.