1. The valve body material is mostly made of cast iron, which is brittle, so it must not be hit by heavy objects.
2. When moving the valve, it is not allowed to throw it by hand; when lifting or hoisting the valve, the rope should be tied to the valve body, and it is strictly forbidden to tie it to the handwheel, valve stem and flange bolt holes.
3. The valve should be installed in the most convenient place for operation, maintenance and overhaul, and it is strictly forbidden to be buried in the ground. The valves on the pipelines in the direct buried and underground trenches shall be equipped with inspection wells to facilitate the opening and closing and adjustment of the valves.
4. Ensure that the threads are intact and undamaged. Wrap hemp, lead oil or PTFE tape on the threads. When screwing, use a wrench to clamp the hexagonal valve body screwed into one end of the pipe.
5. When installing the flange valve, pay attention to tighten the connecting bolts diagonally, and use even force when tightening, to prevent the gasket from running off or causing deformation and damage to the valve body.
6. The valve should be kept closed during installation. For threaded valves close to the wall, it is often necessary to remove the valve stem, disc and handwheel during installation before they can be turned. When disassembling, you should turn the handwheel to keep the valve open before disassembling.
Installation of common valves
Post time: Jul-13-2021