Descripción
The wedge gate valve is designed for installation on a pipeline as a shut-off device in water supply systems and the chemical industry.
Operating principle: The wedge, connected to the spindle, is lowered or raised depending on the direction of rotation of the handwheel, closing or opening the flow section of the gate body.
The multi-turn electric drive is designed to control industrial shut-off pipeline valves, such as cast iron and steel gate valves, slide valves, etc.
Application: the electric drive allows using the valves in automatic control systems for heat supply, water supply of civil and industrial facilities.
Technical characteristics of wedge gate valves DNOVA GAIR GVWR2121M-2W-F-OST DN50-250 Ru16 flanged, with OST flange, bare stem, for electric drive:
| Characteristic | Meaning |
| Gate valve type | Wedge |
| Diameter | 50-250 mm |
| Nominal pressure | 16 bar |
| Working medium | water, steam, petroleum products, gaseous media |
| Working environment temperature | from -29 to +425°C |
| Application | water supply, heat supply |
| Connection type | flanged |
| Control type | electric drive |
Electric drives DNOVA MT-N-xEM-O1-220VAC-U1
Technical characteristics of electric drives DNOVA MT-N-xEM-O1-220VAC-U1:
| Characteristic | Meaning |
| Electric drive type | multi-turn |
| Supply voltage | 220 V |
| Ambient temperature | from -28°C to +60°C |
| Maximum drive speed | 50 |
| Degree of protection of the case | IP67 |
| Internal thermal protection response temperature | 110°C |
| ISO Flange Type | F10/F12 |
| Country of origin | China |
Sketch of dimensions of wedge gate valves DNOVA GAIR GVWR2121M-2W-F-OST DN50-250 Ru16 flanged, with OST flange, bare stem, for electric drive
Overall and installation dimensions of wedge gate valves DNOVA GAIR GVWR2121M-2W-F-OST DN50-250 Ru16 flanged, with OST flange, bare stem, for electric drive:
| Diameter | L, mm | D, mm | D1, mm | D2, mm | b, mm | f, mm |
| DN50 | 180 | 160 | 125 | 102 | 17 | 3 |
| DN80 | 210 | 195 | 180 | 135 | 20 | 3 |
| DN100 | 230 | 215 | 180 | 158 | 20 | 3 |
| DN250 | 450 | 405 | 355 | 320 | 30 | 3 |
Sketch of dimensions of electric drives DNOVA MT-N-xEM-O1-220VAC-U1
Overall and installation dimensions of electric drives DNOVA MT-N-xEM-O1-220VAC-U1:
| O, mm | 40 |
| A, mm | 149 |
| B, mm | 119 |
| C, mm | 114 |
| D, mm | 200 |
| E, mm | 151 |
| F, mm | 105 |
| G, mm | 117 |
Sketch of materials of wedge gate valves DNOVA GAIR GVWR2121M-2W-F-OST DN50-250 Ru16 flanged, with OST flange, bare stem, for electric drive
Materials of parts of wedge gate valves DNOVA GAIR GVWR2121M-2W-F-OST DN50-250 Ru16 flanged, with OST flange, bare stem, for electric drive:
| No. | Part name | Material |
| 1 | Frame | Steel 25L + Steel 13Cr |
| 2 | Wedge | Steel 25L + Steel 13Cr |
| 3 | Stock | ASTM A182 F6a steel |
| 4 | Bolt | ASTM A193 B7 steel |
| 5 | screw | ASTM A194 2H steel |
| 6 | Pad | stainless steel+graphite |
| 7 | Lid | steel 25L |
| 8 | Spindle seal | flexible graphite |
| 9 | Pin | ASTM A29 1045 steel |
| 10 | Gland packing | carbon steel |
| 11 | screw | ASTM A194 2H steel |
| 12 | Bolt | ASTM A193 B7 steel |
| 13 | Bracket | steel 25L |
| 14 | Bearing | - |
| 15 | Cuff | - |
| 16 | Stem nut | brass |
| 17 | Casing | ASTM A29 1035 steel |
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