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1.1 Steel gate valve should be produced in according with drawings and dimensions(table 1.1)belows:
Table 1.1
1.2 Steel gate valve should be produced form metarials (table 1.2) below:
| NO | Part name | Material |
| 1 | body | carbon steel 25 |
| 2 | disc | 2Cr13 |
| 3 | stem | 2Cr13 |
| 4 | Bonet gasket | flexibel graphite+metal sheet |
| 5 | Bonet | carbon steel 25 |
| 6 | bonnet stud nut | carbon steel 20 |
| 7 | bonnet stud | carbon steel 20 |
| 8 | packing | flexible graphite |
| 9 | gland | flexible graphite |
| 10 | eyebolt nut | carbon steel 20 |
| 11 | eyebolt pin | carbon steel 20 |
| 12 | handwheel | malleable iron |
| 13 | back nut | carbon steel 20 |
1.3 steel gate valve should correspond to the parameters(table 1.3) belows.
Gost check valve
