Valve logo
General valve to be used and can either choose to use the project as a symbol (Table 1) indicated. On the valve manually, if the hand wheel size is large enough, the hand on the wheel should have instructions to close the valve of the direction of the arrow or additional "clearance"
"Table 1" universal symbol of the valve project GB / T 12220-1989
Project logo
1 nominal path (DN)
2 nominal pressure (PN)
3 compression material components, code-named
4 factory name or trademark
5 medium flow to the arrow
6 seal ring (pad) code
7 extreme temperature (℃)
8 thread code
9 of Limit pressure
No. 10 plant
Standard No. 12
13, a furnace, boiler
14 pieces of material within the code
No. 15-station
16, code-named lining materials
17 and test the quality mark
18 inspectors mark
19 years to create, on
20 flow
General valve specific signs are as follows:
1, (Table 1) of 1 to 4 was used to be a symbol for the DN ≥ 50mm valve, the valve should be marked on; for the DN <50mm valve, the valve tag or sign, By the provisions of the designer products
2, (Table 1) of 5 and 6 only if certain types of valves in the standard of the provisions is to use the logo, they should be marked in the body and the flange on
3, various types of valves, if there is no special standard requirement (Table 1), 7 to 19 is necessary to choose the use of the logo. When necessary, to mark the body or signs on
The relief valve, the valve on the signs in addition to the provisions of Table 1, there should be: ① the date of the factory, ② application of the medium, ③ export pressure
Steam trap by a sign (Table 2), the signs can be marked in the body, can also be marked on the plate
The safety valve according to the signs (Table 3) the provisions of
"II" marks the steam trap GB / T 12249-1989
Projects must use the logo
1 Model
2 Nominal Path
3 nominal pressure
4 factory name and trademark
5 medium of instruction flow direction arrow
6, the highest pressure
7, the highest temperature
Projects can either choose to use the logo
1 Body material
2 maximum allowable pressure
3, the maximum allowed temperature
4, the highest water temperature
No. 5 factory, the date
"Table III" marks the safety valve
Body item on the mark
1 Nominal Path
Body material 2
3 factory name or trademark
4 When the import and export links to some of the pressure on the size or the same level, the media should be specified in the direction of flow of the arrow
Project signs on the signs
1 valve design allows maximum working temperature
2 tuning pressure
3, based on the standard
4 of the base model factory
Rated 5 emission factors or benchmarks for the rated capacity of the medium
6 flow area
7 to open a high degree of
Pressure for more than 8 percentage
General valve to be used and can either choose to use the project as a symbol (Table 1) indicated. On the valve manually, if the hand wheel size is large enough, the hand on the wheel should have instructions to close the valve of the direction of the arrow or additional "clearance"
"Table 1" universal symbol of the valve project GB / T 12220-1989
Project logo
1 nominal path (DN)
2 nominal pressure (PN)
3 compression material components, code-named
4 factory name or trademark
5 medium flow to the arrow
6 seal ring (pad) code
7 extreme temperature (℃)
8 thread code
9 of Limit pressure
No. 10 plant
Standard No. 12
13, a furnace, boiler
14 pieces of material within the code
No. 15-station
16, code-named lining materials
17 and test the quality mark
18 inspectors mark
19 years to create, on
20 flow
General valve specific signs are as follows:
1, (Table 1) of 1 to 4 was used to be a symbol for the DN ≥ 50mm valve, the valve should be marked on; for the DN <50mm valve, the valve tag or sign, By the provisions of the designer products
2, (Table 1) of 5 and 6 only if certain types of valves in the standard of the provisions is to use the logo, they should be marked in the body and the flange on
3, various types of valves, if there is no special standard requirement (Table 1), 7 to 19 is necessary to choose the use of the logo. When necessary, to mark the body or signs on
The relief valve, the valve on the signs in addition to the provisions of Table 1, there should be: ① the date of the factory, ② application of the medium, ③ export pressure
Steam trap by a sign (Table 2), the signs can be marked in the body, can also be marked on the plate
The safety valve according to the signs (Table 3) the provisions of
"II" marks the steam trap GB / T 12249-1989
Projects must use the logo
1 Model
2 Nominal Path
3 nominal pressure
4 factory name and trademark
5 medium of instruction flow direction arrow
6, the highest pressure
7, the highest temperature
Projects can either choose to use the logo
1 Body material
2 maximum allowable pressure
3, the maximum allowed temperature
4, the highest water temperature
No. 5 factory, the date
"Table III" marks the safety valve
Body item on the mark
1 Nominal Path
Body material 2
3 factory name or trademark
4 When the import and export links to some of the pressure on the size or the same level, the media should be specified in the direction of flow of the arrow
Project signs on the signs
1 valve design allows maximum working temperature
2 tuning pressure
3, based on the standard
4 of the base model factory
Rated 5 emission factors or benchmarks for the rated capacity of the medium
6 flow area
7 to open a high degree of
Pressure for more than 8 percentage
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