How it works
Rising-stem wedge gate
Construction
Parts and materials
Wedge gate valves are designed for installation on a pipeline as a shut-off device in water supply systems and the chemical industry.
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.
Technical parameters of wedge gate valves 30nzh15nzh DNOVA GVWR3131M-2W-F-S DN50-80 Ru40 flanged, with GAIR hand wheel
|
Perimeter |
Meaning |
|
Nominal diameter DN, mm |
50-80 |
|
Working pressure PN, bar |
40 |
|
Temperature of working environment t, °C |
From -29 to +425 |
|
Working environment |
Water, steam, petroleum products and other liquid or gaseous media that are neutral to the materials used |
|
Direction of flow |
Double sided |
|
Control type |
Manual |
|
Connection type |
Flanged |
|
Body material |
Stainless steel 304 |
|
Material of the shut-off element (wedge) |
Stainless steel 304 |
|
Application areas |
Heating and water supply systems; industrial pipelines |
|
Service life, years |
15 |
Sketch of dimensions of wedge gate valves 30nz15nz DNOVA GVWR3131M-2W-FS DN50-80 RU40 flanged, with handwheel GAIR
Overall and installation dimensions of wedge gate valves 30nz15nz DNOVA GVWR3131M-2W-FS DN50-80 RU40 flanged, with handwheel GAIR
|
D.N. |
L , mm |
D , mm |
D1 , mm |
D2 , mm |
b , mm |
f , mm |
z–d , mm |
Weight, kg |
|
50 |
250 |
165 |
125 |
102 |
20 |
2 |
4-18 |
12 |
|
80 |
280 |
200 |
160 |
138 |
24 |
2 |
8-18 |
31 |
Sketch of materials of wedge gate valves 30nz15nz DNOVA GVWR3131M-2W-FS DN50-80 RU40 flanged, with handwheel GAIR
Materials of wedge gate valves 30nz15nz DNOVA GVWR3131M-2W-FS DN50-80 RU40 flanged, with handwheel GAIR
|
Item No. |
Part name |
Material |
|
1 |
Frame |
stainless steel 304 |
|
2 |
Saddle seal |
stainless steel 304 |
|
3 |
Wedge |
stainless steel 304 |
|
4 |
Spindle |
stainless steel 304 |
|
5 |
Pad |
Stainless steel 304 + thermally expanded graphite (TEG) |
|
6 |
Bolt |
stainless steel 304 |
|
7 |
screw |
stainless steel 304 |
|
8 |
Bushing seal |
stainless steel 304 |
|
9 |
Sleeve |
stainless steel 304 |
|
10 |
Spindle seal |
thermally expanded graphite (TEG) |
|
11 |
Seal |
stainless steel 304 |
|
12 |
Bolt |
stainless steel 304 |
|
13 |
Bracket |
stainless steel 304 |
|
14 |
Washer |
ZCuAl10Fe3 alloy |
|
15 |
Steering wheel |
cast iron KTH300 |
- Body material
- Stainless steel AISI 304
- Connection type
- Flanged
- Type of seal
- Metal
- Disc material
- Stainless steel AISI 304
- 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.