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 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 automate the process of controlling industrial valves, as well as to determine the position of the shut-off element of the valve.
The operating principle of the electric drive is to convert the electrical signal coming from the control device into rotational movement of the output shaft.
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 actuators DNOVA MT-N-xEM-O2-220VAC-U1 five-cam
Technical characteristics of electric drives DNOVA MT-N-xEM-O2-220VAC-U1 five-cam:
| Characteristic | Meaning |
| Electric drive type | multi-turn |
| Supply voltage | 220 V |
| Ambient temperature | from -30°C to +70°C |
| Degree of protection of the case | IP67 |
| OST flange type | type A, type B |
| 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, under electric actuator
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-O2-220VAC-U1 five-cam
Overall and installation dimensions of DNOVA MT-N-xEM-O2-220VAC-U1 five-cam electric drives:
| Model | W, mm | H, mm | L, mm |
| MT-N-010EM-02-x-U1 | 334 | 258 | 411 |
| MT-N-020EM-02-x-U1 | 365 | 290 | 470 |
| MT-N-030EM-02-x-U1 | 365 | 290 | 470 |
| MT-N-045EM-02-x-U1 | 433 | 337 | 564 |
| MT-N-060EM-02-x-U1 | 433 | 337 | 564 |
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 |
- 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