The gate valve is designed to be installed on the pipeline as a shut-off device and regulate the flow of medium in water supply systems (except drinking water supply systems) and chemical industry.
The principle of operation of the gate valve is to move the gate (knife) perpendicular to the flow of medium. When the diameter of the nominal bore of the pipeline is completely blocked, the flow is stopped, and when it is partially blocked, the flow is adjusted.
The principle of operation of the pneumatic actuator is based on the movement of the built-in piston due to compressed air, which is supplied to the system from a compressor or tank.
Pneumatic actuator is based on the movement of the built-in piston by compressed air.
Overall and installation dimensions DNOVA GVKR3431M-1W-Fb-2P1 knife gate gate valves, body material - carbon steel, knife material - stainless steel AISI 304, seal - metal, pneumatic actuator:
DN |
L, mm |
D, mm |
D1, mm |
D2, mm |
D0, mm |
H1, mm |
T, mm |
d, mm |
● |
O |
N-Th, mm |
G |
50 |
48 |
165 |
125 |
99 |
100 |
417 |
12 |
18 |
4 |
0 |
4-M16 |
1/2″ |
65 |
48 |
165 |
145 |
118 |
100 |
460 |
12 |
18 |
4 |
0 |
4-M16 |
1/2″ |
80 |
51 |
200 |
160 |
132 |
100 |
510 |
12 |
18 |
4 |
4 |
8-M16 |
1/2″ |
100 |
51 |
220 |
180 |
156 |
100 |
600 |
12 |
18 |
4 |
4 |
8-M16 |
1/2″ |
125 |
57 |
250 |
210 |
181 |
100 |
628 |
12 |
18 |
4 |
4 |
8-M16 |
1/2″ |
150 |
57 |
285 |
240 |
211 |
125 |
780 |
14 |
23 |
4 |
4 |
8-M20 |
1/2″ |
300 |
76 |
445 |
400 |
370 |
160 |
1232 |
16 |
23 |
6 |
6 |
12-M20 |
1/2″ |
400 |
89 |
565 |
515 |
480 |
200 |
1528 |
20 |
27 |
10 |
6 |
16-M24 |
1/2″ |

Materials DNOVA GVKR3431M-1W-Fb-2P1 knife gate gate valves, body material - carbon steel, knife material - stainless steel AISI 304, seal - metal, pneumatic actuator:
№ |
Part name |
Material |
1 |
Body |
WCB steel |
2 |
Schieber |
SS304 stainless steel |
3 |
Guide seal |
PTFE |
4 |
Packing |
PTFE |
5 |
Gland packing |
WCB steel |
6 |
Rack |
Q235 steel |
7 |
Pin |
steel 45 |
8 |
Patron |
WCB steel |
9 |
Rod |
steel 45+Cr |
10 |
Switch |
- |
11 |
Rack head |
cast iron GGG40 |
12 |
Pneumatic cylinder |
- |
13 |
Solenoid valve |
- |
14 |
Filter |
- |
15 |
Wedge |
WCB steel |
