pipe fittings design requirements

high pressure pipe fittings installation with the low-pressure pipe installation requirements similar, but more demanding, more stringent provisions, therefore, in addition to the requirements, the low-pressure pipe installation requirements, the following requirements should still perform.
When the high-pressure pipeline installation, you should use the official fixed pipe rack, pipe rack and high-pressure pipes, pipe fittings contact design requirements should install a protective sleeve. Installation should expose the high-pressure pipe flange end thread chamfer. When installing the gasket, do not use a wire dipping advance shall nozzle and pad coated with butter, soft metal high-pressure washer should be accurately placed in a sealed housing. The flange bolts should be symmetrical and evenly tightened, not over after the bolt tightening, two concentric flange should remain parallel, exposed on the outside of the nut should be 2 to 3 buckle, at least not less than 2 buttons, and various bolts exposed length consistent. During the installation process, not use strong pull, strong push, strong twist or modify gasket thickness ways to compensate for manufacture or installation error. Pipeline installation work as impossible to continuously conducted and completed, should be promptly closed the open nozzle. Parts meter sampling site should also be installed on the pipe and the pipe.