By resistance to influence of ambient air temperature and humidity, the gate valves correspond to NF, climatic category - 3, according to GOST 15150.
The gate valve bears marking:
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on the front side of the body, in cast metal - working pressure, working temperature, nominal diameter, material of body parts;
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on the reverse side of the body, in cast metal - trademark of the manufacturer, year of manufacture, frame for gluing a self-destructive plate containing the factory serial number and the Euro-Asian conformity sign;
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on the flywheel - an arrow indicating the rotation direction when closing and opening the valve.

Dimensions and connection sizes, mm | |||||||
Gate valve type | |||||||
Parameter designation | МЗВ-50 | МЗВ-80 | МЗВ-100 | МЗВ-150 | МЗВ-200 | МЗВ-250 | МЗВ-300 |
DN | 50 | 80 | 100 | 150 | 200 | 250 | 300 |
D | 165 | 200 | 220 | 280 | 340 | 400 | 455 |
D1 | 125 | 160 | 180 | 240 | 295 | 350 | 400 |
D0 | 140 | 200 | 200 | 250 | 280 | 330 | 330 |
L | 150 | 180 | 190 | 210 | 230 | 250 | 270 |
B | 118 | 160 | 188 | 280 | 348 | 434 | 512 |
d | 18 | 18 | 18 | 22 | 22 | 22 | 22 |
n | 4 | 4 | 8 | 8 | 8 | 12 | 12 |
H | 323 | 406 | 463 | 623 | 732 | 889 | 1011 |
h | 240 | 306 | 353 | 480 | 562 | 689 | 784 |