Brief Description
Rubber Flapper Swing Check Valve, Oil Control Bottom Buffer is a safety device mounted in the pipeline or pump outlet to prevent the pump from inversed running due to the water hammer¨s shock produced in the side-flow of the medium when the pump stops. And it features by the light flap, big opening, notable power saving, small fluid resistance, new-style of water hammer removal mechanism¨s design, stable and reliable seal performance, wearable, long duration, stable running, without vibration and noise etc.
Suitable for the pipeline related to the systems of water supply and drainage, fire-fighting, warming etc. or the pump outlet to prevent both pump and pipeline from being damaged due to the water hammer produced in medium¨s back-flow.
Technical Parameters |
|
|
|
PN(MPa) |
1 |
1.6 |
2.5 |
Test pressure |
Shell strength |
1.5 |
2.4 |
3.75 |
(MPa) |
Sealing performance |
1.1 |
1.76 |
2.75 |
|
Working temperature |
≤80 ℃ |
Applicable medium |
Rinsing、Dead oil |
Materials |
|
|
|
Name of parts |
Body、 Bonnet |
Seat |
Valve shaft |
Material |
Casting pig、Ductile lron、Bowl-shape steel |
Rubber assembly |
Stainless steel |
Dimensions |
|
|
|
|
|
|
|
DN |
ENHH44X/T/H-1O |
mm |
L |
D |
D1 |
B |
H |
H1 |
B |
Z-φd |
40 |
200 |
150 |
110 |
220 |
300 |
140 |
20 |
4-18 |
50 |
230 |
165 |
125 |
270 |
300 |
140 |
20 |
4-18 |
65 |
290 |
185 |
145 |
290 |
320 |
150 |
20 |
4-18 |
80 |
310 |
200 |
160 |
315 |
330 |
162 |
22 |
8-18 |
100 |
350 |
220 |
180 |
340 |
460 |
260 |
24 |
8-18 |
150 |
480 |
285 |
240 |
402 |
580 |
274 |
26 |
8-22 |
200 |
500 |
340 |
195 |
470 |
680 |
302 |
28 |
8-22 |
250 |
600 |
391 |
350 |
550 |
730 |
348 |
28 |
12-22 |
300 |
700 |
445 |
400 |
622 |
850 |
370 |
28 |
12-22 |
350 |
800 |
505 |
460 |
660 |
950 |
410 |
30 |
16-22 |
400 |
900 |
565 |
515 |
800 |
1030 |
450 |
32 |
16-26 |
500 |
1100 |
670 |
620 |
950 |
1262 |
550 |
34 |
20-26 |
600 |
1300 |
780 |
725 |
1122 |
1520 |
635 |
36 |
20-30 |
700 |
1400 |
895 |
840 |
1810 |
1644 |
720 |
40 |
24-30 |
800 |
1500 |
1015 |
950 |
1250 |
1774 |
780 |
44 |
24-33 |
900 |
1700 |
1115 |
1050 |
1470 |
2084 |
920 |
46 |
28-33 |
1000 |
1900 |
1230 |
1160 |
1570 |
2195 |
970 |
50 |
28-36 |
1200 |
2220 |
1450 |
1380 |
1920 |
2615 |
1150 |
56 |
32-39 |
Typical Installation
 |
