In detail
What it is made of
How it works
Multi-turn electric actuator
Rising-stem wedge gate
Construction
Parts and materials
The wedge gate valve is designed for installation on the pipeline as a shut-off device in water supply systems and chemical industry.
Operating principle: The wedge connected to the spindle is lowered or raised depending on the direction of rotation of the hand wheel, closing or opening the passage section of the gate valve body.
The multi-turn actuator is designed for control of industrial shut-off valves, e.g. cast iron and steel gate valves, slide gates, ball valves, etc.
Application: electric actuator allows to use the valve in automatic control systems of heat and water supply of civil and industrial facilities.
Technical characteristics of wedge gate valves 30s964nzh DNOVA GAIR GVWR2121M-2W-F-OST DN80-150 Ru25 flanged, with OST flange, round stem, for electric drive:
| Characteristic | Meaning |
| Gate valve type | Wedge |
| Diameter | 50-150 mm |
| Nominal pressure | 25 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-O2-380VAC-U1
Technical characteristics of electric drives DNOVA MT-N-xEM-O2-220VAC-U1:
| Characteristic | Meaning |
| Electric drive type | multi-turn |
| Supply voltage | 380 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 | 90°C |
| ISO Flange Type | F10,F14 |
| Country of origin | China |
Sketch of dimensions of wedge gate valves 30s964nzh DNOVA GAIR GVWR2121M-2W-F-OST DN80-150 Ru25 flanged, with OST flange, round stem, for electric drive
Overall and installation dimensions of wedge gate valves 30s964nzh DNOVA GAIR GVWR2121M-2W-F-OST DN80-150 Ru25 flanged, with OST flange, round stem, for electric drive:
| Diameter | L, mm | D, mm | D1, mm | D2, mm | b, mm | f, mm |
| DN80 | 280 | 195 | 160 | 133 | 22 | 3 |
| DN150 | 350 | 300 | 250 | 212 | 30 | 3 |
Sketch of dimensions of electric drives DNOVA MT-N-xEM-O2-380VAC-U1
Overall and installation dimensions of electric drives DNOVA MT-N-xEM-O2-380VAC-U1:
| Model | H, mm | H1, mm | L, mm | L1, mm |
| MT-N-020EM-02-x-U1 | 248 | 90 | 435 | 278 |
| MT-N-030EM-02-x-U1 | 248 | 90 | 435 | 278 |
| MT-N-045EM-02-x-U1 | 325 | 116 | 640 | 410 |
| MT-N-060EM-02-x-U1 | 325 | 116 | 640 | 410 |
Sketch of materials of wedge gate valves 30s964nzh DNOVA GAIR GVWR2121M-2W-F-OST DN80-150 Ru25 flanged, with OST flange, round stem, for electric drive
Materials of parts of wedge gate valves 30s964nzh DNOVA GAIR GVWR2121M-2W-F-OST DN80-150 Ru25 flanged, with OST flange, round stem, for electric drive:
| No. | Part name | Material |
| 1 | Frame | steel 25L |
| 2 | Wedge | steel 25L |
| 3 | Stock | steel 20Cr13 |
| 4 | Bolt | steel 45 |
| 5 | screw | tired 35 |
| 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 | steel 35 |
| 12 | Bolt | steel 45 |
| 13 | Bracket | steel 25L |
| 14 | Bearing | - |
| 15 | Cuff | - |
| 16 | Stem nut | brass |
| 17 | Casing | ASTM A29 1035 steel |
- Body material
- Steel 20/25L
- Connection type
- Flanged
- Type of seal
- Metal
- Disc material
- Steel 25L
- Limit switches
- Yes
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal