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Centralized gas supply process

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  1. The gas source adopts centralized gas supply mode, all adopt automatic switching device, with 1 or more steel cylinders on each side. After the gas pressure in one cylinder group is lower than the set pressure, it will automatically switch to the other side cylinder group. After changing the empty cylinder to the full cylinder, turn the wrench to the side of the gas supply to realize the next automatic switch. The gas is delivered from the cylinder room to each gas terminal through the stainless steel instrument tube to ensure beauty and safety;

  2. In order to meet the requirements of the use of the instrument, all gas systems adopt a two-stage pressure reduction method, that is, a first-stage pressure reducing valve is set at the outlet of the gas cylinder, and a second-stage pressure reducing valve is set at the gas use point;

  3. At the outlet point of the gas system, a gas stop valve (ball valve) and a point of use connector should be set to facilitate the connection of gas equipment to the gas pipeline system;

  4. In the flammable gas (H2 C2H2 CH4) system, in order to prevent the occurrence of flashback, an explosion-proof flame arrestor should be installed at the low pressure end of the system (after the first-stage pressure reducer);

  5. The pipes are connected by ferrules or automatic welding, and are laid along the corners of the wall or the ceiling, and connected to each instrument terminal nearby;

  6. Gas supply process: high pressure gas cylinder → filter, one-way valve, high pressure hose → high pressure automatic switching device → master control valve → flame arrestor (only combustible gas) → gas supply pipeline → terminal valve → terminal pressure regulating valve → Analysis instrument

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