First, rubber stopper valve purposes:
The valve is designed to control the general corrosive medium, the body cavity surface covered with a variety of rubber to choose from, suitable for different working temperature and fluid pipe, with high strength, good corrosion resistance.
Second, rubber stopper valve material:
|
Body |
Cast iron, ductile iron, carbon steel, stainless steel |
|
Butterfly plate |
Cast iron, ductile iron, carbon steel, stainless steel, carbon steel fully coated rubber or fluoroplastic |
|
Valve stem |
Carbon steel nickel-phosphorus, stainless steel |
|
Seat ring |
Natural rubber NR, neoprene CR, nitrile rubber NBR, EPDM rubber EPDM, fluorine rubber FKM |
|
Handwheel |
Cast iron, carbon steel |
Third, the rubber stopper valve test:
Lining: Spark
testing and inspection according to GB / T13927 standard
Nominal pressure: PN (MPa)
Body: PN × 1.5
Seal: PN × 1.1
Fourth, the main size parameters:
|
Nominal diameter DN |
Nominal |
Working |
L |
D |
D1 |
n-Φd |
H1 |
H2 |
Do |
quality |
|
15 |
1.6 1.0 |
1.6 1.0 |
130 |
95 |
65 |
4-14 |
213 |
232 |
100 |
4 |
|
20 |
150 |
105 |
75 |
4-14 |
224 |
246 |
100 |
6 |
||
|
25 |
160 |
115 |
85 |
4-14 |
240 |
272 |
120 |
8 |
||
|
32 |
180 |
140 |
100 |
4-18 |
262 |
285 |
120 |
10.5 |
||
|
40 |
200 |
150 |
110 |
4-18 |
283 |
310 |
140 |
16.5 |
||
|
50 |
2360 |
165 |
125 |
4-18 |
311 |
345 |
140 |
18. |
||
|
65 |
290 |
185 |
1451 |
4-18 |
366 |
410 |
160 |
26 |
||
|
80 |
310 |
200 |
60 |
6 / 2-18 |
388 |
430 |
200 |
36.5 |
||
|
100 |
350 |
220 |
180 |
6 / 2-18 |
463 |
535 |
280 |
58 |
||
|
125 |
400 |
250 |
210 |
6 / 2-18 |
495 |
575 |
380 |
64 |
||
|
150 |
480 |
285 |
240 |
6 / 2-22 |
560 |
60 |
320 |
85 |
||
|
200 |
495 |
340 |
295 |
6 / 2-22 |
615 |
715 |
360 |
155 |
||
|
250 |
622 |
405 |
355 |
10 / 2-22 |
790 |
935 |
500 |
243 |
||
|
300 |
698 |
460 |
410 |
10 / 2-22 |
908 |
1100 |
500 |
295 |
