The pneumatic emergency Shut-off ball valve is composed of a pneumatic actuator and an O-shaped ball valve. The connection between the pneumatic switch ball valve body and the actuator adopts a direct connection method, and can be equipped with a double acting pneumatic actuator or a single acting pneumatic actuator. The gas source pressure is 0.4-0.7 MPa.
Features of pneumatic emergency shut-off ball valve products
- Fluid cutoff and flow.
- Reliable sealing, good flow performance, low flow resistance, and convenient loading and unloading.
- Adopting direct connection method, it has simple connection, compact structure, and stable action.
Applicable scenarios for pneumatic emergency shut-off ball valves
Especially suitable for situations where the medium is viscous, contains particles, and has fiber properties. Currently, this pneumatic switch ball valve is widely used in the fields of petroleum, chemical industry, metallurgy, light industry, paper making, power plants, refrigeration, and other work.
Performance parameters of pneumatic emergency shut-off ball valve:
|
Nominal diameter (mm) |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
|
Flow coefficient Kv |
21 |
38 |
72 |
112 |
170 |
273 |
384 |
512 |
940 |
1452 |
2222 |
3589 |
5128 |
7359 |
|
Nominal pressure (MPa) |
PN1.6¡¢2.5¡¢4.0¡¢6.4MPa |
|
Leakage rate |
Soft seal: zero leakage; Hard seal: ¡Ü 10-5 of rated flow |
|
Valve body form |
Two stage valve body (floating ball) |
Two stage valve body (fixed ball) |
|
Trim form |
O-shaped spherical trim |
|
Seal filler |
PTFE, metal graphite spiral wound gasket |
|
Connection form |
Flanges, welding, threading |
|
Flow characteristics |
Quick opening characteristics |
|
Adjustable range |
DN15-65 |
DN80-300 |
|
250:01:00 |
350:01:00 |
|
Applicable temperature |
Sealing surface |
|
PTFE¡Ü150¡æ¡¢ RTFE¡Ü180¡æ ¡¢PPL¡Ü300¡æ¡¢ Hard seal¡Ü450¡æ |
|
Configure actuator |
Can be equipped with GT, AT, ST series single and double acting pneumatic actuators |
|
Control mode |
Two position switch control |
Pneumatic emergency cut-off ball valve actuator parameters
Actuator model |
GT, AT, AW series single and double acting pneumatic actuators |
|
Air supply pressure |
0.4¡«0.7MPa |
|
Air source interface |
G1/4"¡¢G1/8"¡¢G3/8"¡¢G1/2" |
|
Environment temperature |
-30¡«+70¡æ |
|
Mode of action |
Single acting actuator: air closed (B) - valve position open (FO) in case of loss of air; Air open (K) - valve position closed in case of loss of gas (FC) |
|
Double acting actuator: air closed (B) - valve position held (FL) in case of loss of air; Air Open (K) - Valve Position Hold (FL) in Loss of Air |
External dimensions of pneumatic emergency shut-off ball valve
Nominal diameter DN(mm) |
Main size |
Flange size |
|
PN1.6MPa |
PN2.5MPa |
|
L |
H |
L1 |
D |
D1 |
D2 |
n-¦Õd |
D |
D1 |
D2 |
n-¦Õd |
|
15 |
130 |
185 |
140 |
95 |
65 |
46 |
4/14 |
95 |
65 |
46 |
4/14 |
|
20 |
140 |
191 |
140 |
105 |
75 |
45 |
4/14 |
105 |
75 |
56 |
4/14 |
|
25 |
150 |
193 |
140 |
115 |
85 |
65 |
4/14 |
115 |
85 |
65 |
4/14 |
|
32 |
165 |
212 |
164 |
140 |
100 |
76 |
4/18 |
140 |
100 |
76 |
4/18 |
|
40 |
180 |
217 |
164 |
150 |
110 |
84 |
4/18 |
150 |
110 |
84 |
4/18 |
|
50 |
200 |
260 |
190 |
165 |
125 |
99 |
4/18 |
165 |
125 |
99 |
4/18 |
|
65 |
220 |
293 |
210 |
185 |
145 |
118 |
4/18 |
185 |
145 |
118 |
8/18 |
|
80 |
250 |
323 |
247 |
200 |
160 |
132 |
8/18 |
200 |
160 |
132 |
8/18 |
|
100 |
280 |
382 |
276 |
220 |
180 |
156 |
8/18 |
235 |
190 |
156 |
8/22 |
|
125 |
320 |
468 |
348 |
250 |
210 |
184 |
8/18 |
270 |
220 |
184 |
8/26 |
|
150 |
360 |
510 |
378 |
285 |
240 |
211 |
8/22 |
300 |
250 |
211 |
8/26 |
|
200 |
400 |
655 |
524 |
340 |
295 |
266 |
12/22 |
360 |
310 |
274 |
12/26 |
|
250 |
630 |
/ |
/ |
405 |
355 |
319 |
12/26 |
425 |
370 |
330 |
12/30 |
|
300 |
750 |
/ |
/ |
460 |
410 |
370 |
12/26 |
485 |
430 |
389 |
16-30 | |
