Classification£º¡¡Electric butterfly valve
Product Name£º¡¡Stainless Steel Low-Load Electric Control Butterfly Valve
Product Description£º
As a gas modulation device & a two-way switch device, GRAT stainless steel low load electric control butterfly valve is suited to various ventilation and dust removal pipeline in the fields of metallurgy, mine, cement, chemical, power generation, industrial furnace.
¡ïSmall opening torque, free-friction rotation, long service life
The seal performance for two-ways between disc and seat is superior when the valve closed. And the torque is small.
The friction between the disc and the seat is small. The operation is realized by the working principle that the shaft drives the disc to rotate 90 ° to realize flexible switch without jam, jumpiness.
More than 50,000 operation life without fault, keep your system operating safely and reliably
Without connecting rod and bolts inside, the valve has reliable operation, long service life, which is easy to install in any direction, and not affected by the medium flow.
¡ïSimple structure, easy operation, high cost- effective
The valve welded by the steel plate is simple& short structure, light weight, and is convenient to use and maintain, which is equipped with electronic whole actuator to easily realize on-site operation and remote control.
With a welded structure between central line disc and steel plate, the valve has compact structure, light weight, convenient installation, small flow resistance, large flow capability, easy operation, and can avoid the influence of high temperature expansion.
Electric ventilation butterfly valve is welded by steel plate with short size structure, light weight, convenient installation, small driving torque, flexible switch and convenient operation.
Be equipped with seal ring, the body has small leakage because there is no visible interstices between the sealed parts.
The large expansion interstices between disc and body can effectively avoid the blockade caused by expanding with heat and contracting with cold.
The modulation type electric actuator and the valve stem have been connected and debugged well, then the metal sealed disc is driven by electric energy to realize gyration partly from 0~90°.
The valve is accurately controlled via switch signal 4~20mA from industrial automation control system, so as to regulate and control the different technical parameters of the flow, temperature, pressure.
¡ïGood flow characteristics, a broad scope of application
With linearity flow characteristics and excellent modulation performance, low-load electric butterfly valve (ventilation butterfly valve) is widely applied in the field of metallurgy, petroleum and chemical, electric power, building materials industry, mining and so on, to regulates and controls the gas medium of the industrial pipeline.
Configured with a convex pipe flanges, the body has high cost-effective, especially large diameter butterfly valve (prefer to butterfly valve in the occasions of middle and low pressure), the butterfly valves have superior cost-effective performance to realize a broad scope of applications.
¡ïThe patent positioning technology
PPD positioning technology completely solves the problem of poor positioning accuracy and a major application difficult of long time reliable operation.
¡ïVarious solutions for seal form
Seal form: Open seat, back-seated seat (ultra high temperature application), sealed oblique plate seat (room temperature application).
The body is unsealed.
¡ïThe new technology for Direct Debugging Switch(DDS) in electric actuators.
Easy to use! Design by GRAT in China.
It completely solved the problem of complex debugging and make the technology simpler.
The debugging can be simplified from 5 steps to 1 step.
The debugging for electrical and mechanical position can be easy achieved through rotating the knob on the top of the dial after electric actuators and valves are assembled together.
Power supply: AC220V 50/60HZ
Operating temperature: 0-450¡æ£¨Optional£©
Input signal: 4-20mA Output signal: 4-20mA
Body connections: Wafer/Flange£¨Optional£©
Flow characteristics: Approximate to equal percentage
Body material: CF8/SUS304/SUS316L Stainless steel
Disc material: CF8/SUS304/SUS316L Stainless steel
Seal type: Open type, back-seated type (ultra high temperature application), sealed type (room temperature application).
Valve size: DN100¡«DN2000¡¡¡¡
Body ratings: 0.1¡«0.6MPa¡¡¡¡
Test properties pressure: Seal 0.15Mpa, Body 0.11Mpa¡¡¡¡
Applicable temperature: £¼200¡æ, Special: £¼450¡æ¡¡
Applicable medium: Smoke, air, gas.
The compliant standards of the product
Manufacturing standards: JB/T8692-1998
Design standards: GB/T122381989, API609
Inspection and test: GB/T139271992, API598
Side flange connection: GB9115.88, GB9113.3 ~5-88, ASME B16.5CL.150, CL.300 and ASME B16.47CL.150.
DN |
D |
D1 |
L |
B |
C |
n-Φd |
H1 |
H2 |
W1 |
W2 |
Weight |
50 |
140 |
110 |
108 |
14 |
3 |
4-φ14 |
200 |
70 |
196 |
145 |
7 |
65 |
160 |
130 |
112 |
14 |
3 |
4-φ14 |
210 |
80 |
196 |
145 |
8 |
80 |
190 |
150 |
114 |
14 |
3 |
4-φ18 |
220 |
95 |
196 |
145 |
9 |
100 |
205 |
170 |
127 |
14 |
3 |
4-φ18 |
240 |
105 |
196 |
145 |
10 |
125 |
235 |
200 |
140 |
14 |
3 |
8-φ18 |
260 |
120 |
196 |
145 |
12 |
150 |
260 |
225 |
140 |
16 |
3 |
8-φ18 |
280 |
132 |
196 |
145 |
14 |
200 |
315 |
280 |
152 |
18 |
3 |
8-φ18 |
320 |
160 |
196 |
145 |
29 |
250 |
370 |
335 |
165 |
22 |
3 |
12-φ18 |
350 |
187 |
196 |
145 |
31 |
300 |
435 |
395 |
178 |
22 |
4 |
12-φ22 |
370 |
220 |
196 |
145 |
34 |
350 |
485 |
445 |
190 |
22 |
4 |
12-φ22 |
390 |
245 |
196 |
145 |
162 |
400 |
535 |
495 |
216 |
22 |
4 |
16-φ22 |
420 |
270 |
196 |
145 |
168 |
450 |
590 |
550 |
222 |
24 |
4 |
16-φ22 |
450 |
297 |
196 |
145 |
177 |
500 |
640 |
600 |
229 |
24 |
4 |
20-φ22 |
460 |
322 |
196 |
145 |
190 |
600 |
755 |
705 |
267 |
24 |
5 |
20-φ28 |
520 |
377 |
196 |
145 |
213 |
700 |
860 |
810 |
292 |
28 |
5 |
24-φ26 |
600 |
430 |
255 |
184 |
276 |
800 |
975 |
920 |
318 |
28 |
5 |
24-φ30 |
650 |
487 |
255 |
184 |
304 |
900 |
1075 |
1020 |
330 |
28 |
5 |
24-φ30 |
700 |
537 |
255 |
184 |
327 |
1000 |
1175 |
1120 |
410 |
28 |
5 |
28-φ30 |
750 |
587 |
255 |
184 |
349 |
1200 |
1405 |
1340 |
470 |
28 |
5 |
32-φ33 |
860 |
702 |
255 |
184 |
394 |
1300 |
1475 |
1420 |
510 |
32 |
5 |
36-φ30 |
920 |
760 |
255 |
184 |
564 |
1400 |
1630 |
1560 |
530 |
32 |
5 |
36-φ30 |
940 |
782 |
255 |
184 |
644 |
1500 |
1690 |
1630 |
580 |
32 |
5 |
40-φ36 |
1080 |
860 |
255 |
184 |
695 |
1600 |
1830 |
1760 |
600 |
32 |
5 |
40-φ36 |
1100 |
895 |
255 |
184 |
744 |
1800 |
2045 |
1970 |
670 |
34 |
5 |
44-φ39 |
1160 |
995 |
255 |
184 |
875 |
2000 |
2265 |
2180 |
760 |
34 |
5 |
48-φ42 |
1280 |
1095 |
255 |
184 |
984 |
Properties and Specifications
Valve size DN |
DN50-DN2000 |
|
Body ratings PN |
0.1MPa |
|
Test pressure |
Body test |
0.15MPa |
Seal test |
0.11MPa |
|
Operating temperatuer¡æ |
£¼200¡æ Special: £¼450¡æ |
|
Applicable medium |
smoke,air,gas. |
The material of the main parts
Part name |
Material |
Body |
Q235-B, 20, 20g etc. |
Disc |
|
Rotatable shaft |
45, 40Cr etc. |
Packing |
YS250F etc. |
Handle |
KTH33008 |