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Butterfly
Swing Check Valves (LIFC3003)
¡ö Structure and Application
The wafer flange clamped butterfly
check valves is a energy-save product. It is manufactured based the foreign
advanced technology and in accordance with relative international standards.
This product is featured by excellent retaining per-formance, high safety and
reliability and low flow resistance. It is suitable for systems in the
industries of petrochemical food processing, medicine, textile, paper-making.
Water, supply, drainage, metallurgy, energy, and light industry, etc, used as a
check valves in one way.
¡ö Technical Standard
Design and Manufacture: ANSI
B16.34,API 6D Face to
face: API 6D
Flanged connection: ANSI B16.5¡¢API
605
Test and inspection: API 6D
¡ö Featutes
1. Small in size, light in weight,
compact in structure, easy in maintenance.
2. Two torsion springs are used
excerting on each of the pair valves plates. Which close the plates quickly and
automatically.
3. The quick-close action prevents
the medium from flowing back and eliminates water-hammer effect.
4. This valves is short in length,
so that it is rigid and easy to mount.
5. It is easy to install on
pipeline which is laid horizontally or vertically.
6. This valve is tightly sealed
without leakage under the pressure water test.
7. Safe and reliable in operation,
high interference-resistance.
8. The connection dimensions of
flanges accord with the standards of GB4216-84 GB4216.84
9. The face to face dimensions are
in accordance with GB12221-89.ISO5752-82.The stem of the valves should be
perpendicular to the horizontal level when the valves is mounted on horizontal
pipeling. For vertical installation the direction of flow should be downward.
¡ö Material for main parts
|
NO. |
Name of
Parts |
WCB |
LCB |
WC6 |
WC9 |
C5 |
C12 |
CF8 |
CF8M |
|
1 |
Body |
A216 WCB |
A352 LCB |
A217 WC6 |
A217 WC9 |
A217 C5 |
A217 C12 |
A351 CF8 |
A351 CF8M |
|
2 |
Disc |
A351 CF8 |
A182 F11 |
A182 F22 |
A217 C5 |
A217 C12 |
A182 F304 |
A182 F316 |
|
3 |
Stem |
A182 F304 |
A182 F316 |
|
4 |
Spring |
Stainless steel |
|
5 |
Rubber
Gasket |
EPDM-46~+121 Neoprene-50~+150 NBR-35~+113
Fluororabber-23~+150 |
¡ö Main Size and Weight
|
CLASS 150/300 |
|
SIZE |
D |
D1 |
D2 |
L |
R |
t |
WT |
|
Inch |
mm |
mm |
mm |
mm |
mm |
mm |
Kg |
|
2 |
107 |
65 |
43.3 |
43 |
28.8 |
19 |
1.5 |
|
2-1/2 |
127 |
80 |
60.2 |
46 |
36.1 |
20 |
2.4 |
|
3 |
142 |
94 |
66.4 |
64 |
43.4 |
28 |
3.6 |
|
4 |
162 |
117 |
90.8 |
64 |
52.8 |
27 |
5.7 |
|
5 |
192 |
145 |
116.9 |
70 |
65.7 |
30 |
7.3 |
|
6 |
213 |
170 |
144.6 |
76 |
78.6 |
31 |
9.0 |
|
8 |
273 |
224 |
198.2 |
89 |
104.4 |
33 |
17 |
|
10 |
323 |
265 |
233.7 |
114 |
127 |
50 |
26 |
|
12 |
378 |
310 |
283.9 |
114 |
148.3 |
43 |
42 |
|
14 |
438 |
360 |
332.9 |
127 |
172.4 |
46 |
55 |
|
16 |
439 |
410 |
381.0 |
140 |
197.4 |
52 |
75 |
|
18 |
555 |
450 |
419.9 |
152 |
217.8 |
58 |
101~ 107 |
|
20 |
594 |
505 |
467.8 |
152 |
241 |
58 |
111 |
|
24 |
690 |
624 |
572.6 |
178 |
295.4 |
73 |
172 |
|
28 |
800 |
720 |
680 |
29 |
354 |
98 |
219 |
¡¡
¡¡ |
