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.
Explosion-proof multi-turn actuators GZ are used for controlling pipeline shut-off valves in chemical, oil and gas industries, as well as in the fuel and energy complex.
Technical characteristics of wedge gate valves 30nzh941nzh DNOVA GAIR GVWR2424M-2W-F-OST DN50 Ru16 flanged, with OST-flange, bare stem, under electric actuator:
| Characteristic | Meaning |
| Gate valve type | Wedge |
| Diameter | 50 mm |
| Nominal pressure | 16 bar |
| Wednesday | 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 GZ-V 380V
Technical characteristics of electric drives GZ-V 380V:
| Characteristic | Meaning |
| Electric drive type | multi-turn |
| Supply voltage | 380 V |
| Ambient temperature | from -45°C to +70°C |
| Degree of protection of the case | IP65 |
| Explosion protection | 1ExdIIBT4 Gb |
| OST flange type | type A, type B |
Sketch of dimensions of wedge gate valves 30nzh941nzh DNOVA GAIR GVWR2424M-2W-F-OST DN50 16 bar flanged, with OST-flange, bare stem, under electric actuator
Dimensions and installation dimensions of wedge gate valves 30nzh941nzh DNOVA GAIR GVWR2424M-2W-F-OST DN50 16 bar flanged, with OST-flange, bare stem, under electric actuator:
| Diameter | L, mm | D, mm | D1, mm | D2, mm | b, mm | f, mm |
| DN50 | 180 | 160 | 125 | 100 | 16 | 3 |
Sketch of the dimensions of the electric drives GZ-V 380V
Overall and installation dimensions of electric drives GZ-V 380V:
| Model | W, mm | H, mm | L, mm |
| GZ-VA.100/24 | 385 | 310 | 616 |
| GZ-VB.300/24 | 420 | 370 | 716 |
Material sketch of wedge gate valves 30nzh941nzh DNOVA GAIR GVWR2424M-2W-F-OST DN50 Ru16 flanged, with OST-flange, bare stem, under electric actuator
Materials of details of wedge gate valves 30nzh941nzh DNOVA GAIR GVWR2424M-2W-F-OST DN50 Ru16 flanged, with OST-flange, bare stem, under the electric actuator:
| No. | Part name | Material |
| 1 | Frame | steel 12x18H9TL |
| 2 | Wedge | steel 12x18H9TL |
| 3 | Wedge fastening | steel 12x18H9TL |
| 4 | Stock | steel 12x18H9TL |
| 5 | Pad | steel 12x18H9TL + graphite |
| 6 | Lid | steel 12x18H9TL |
| 7 | Hairpin | stainless steel 201 |
| 8 | screw | stainless steel 201 |
| 9 | Spindle seal | expanded graphite |
| 10 | Gland seal | stainless steel 201 |
| 11 | Bracket | steel 12x18H9TL |
| 12 | Stem nut | copper alloy ZCuAl10fe3 |
- Body material
- Alloy steel
- Connection type
- Flanged
- Type of seal
- Metal
- Disc material
- Alloy steel
- 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.