Universal valve must be used and can choose to use logo items, as shown in the table. For manual valves, if the hand wheel size is large enough, then there should be instructions on the hand wheel valve closed arrows or additional "open" "close" message.
Universal Valve Logo Program (GB12220): Nominal diameter (DN); Nominal pressure (PN); compression component materials, code-named; manufacturer name or trademark; medium flow arrows; seal ring (pad) Code; limit temperature (℃ ); thread code; limit pressure; production plant number; standard number; smelting furnace number; inner parts material code; station number; lining material code; quality and testing mark; inspectors imprinting; manufacture, month and year; flow characteristics.
A specific hallmark of common valve as follows:
(1) For DN ≥ 50mm valves should be marked on the body; For DN ≤ 50mm valve, marking on the body or the nameplate on the requirements by the product designer.
(2) when certain types of valve standards, there are provisions must be used when a sign, they should be separately marked on valve body and flange.
(3) If the standards of various types of valves are not special provisions. When necessary, can be marked on body or plate.
For the valve, the valve on the signs in addition to the provisions of the table, there should be: a: ex-factory date; b: for medium; c: outlet pressure.
Steam Traps table below provides the sign may be located in the body can also be marked on the plate. Steam Traps logo (GB12249) must use the logo:
Product model; DN; PN; manufacturer names and trademarks; medium flow direction; maximum working pressure; maximum operating temperature.
Either choose to use the logo: body material; the maximum allowable pressure; the maximum allowable temperature; the maximum drain temperature; serial number, date.
Safety Valve logo (GB12241)
Valve on the signs: nominal diameter DN; body material; manufacturer name or trademark; when the import and export connections part of the size or the pressure levels were equal, there should be arrows indicate the flow direction of medium
Signs on the signs: valve design allows maximum working temperature (℃); the entire set pressure (MPa); based on the standard factory No. benchmark model; nominal discharge coefficient or for a rated displacement of the base medium; flow area (mm2 ); opening height (mm) over the pressure the percentage of
ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com
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