Q41F/Q41PPL manual cast steel soft sealed flange ball valve is an important type of valve, widely used in fields such as petrochemicals and long-distance pipelines. The closing element of a ball valve is a ball (or part of a ball) with a hole, which rotates with the valve stem to achieve the opening or closing of the valve. Among various valves, ball valves have the lowest flow resistance. When the full diameter ball valve is opened, the ball channel, valve body channel, and connecting pipe diameter are equal and form a diameter, and the medium can flow almost without any loss. The ball valve can be fully closed and fully opened by rotating 90 °, with quick opening and closing. Compared with gate valves and globe valves of the same specifications, ball valves have a smaller volume and lighter weight, making them easier to install in pipelines.
Application scope:
Widely used in automation control systems in industrial sectors such as paper making, petrochemicals, chemicals, metallurgy, power, environmental protection, petroleum, and light industry.
Product advantages:
1) The floating ball valve adopts a full bore or reduced bore design, with low flow resistance.
2) The ISO5211 connection standard can make the installation of electric/pneumatic actuators more specialized.
3) Equipped with a fireproof and anti-static structure, conductive springs are installed between the valve stem and valve body, as well as between the valve stem and sphere, to prevent ignition of flammable media due to static electricity. Ensure system security.
4) The fire-resistant structure provides dual protection. In the event of a fire causing damage to the sealing ring, all sealing parts of the ball valve can form a metal to metal hard sealing structure.
Product Disadvantages:
1) The characteristics of the structure are not suitable for manufacturing large diameters.
2) During use, there is severe friction and high torque between the valve seat and ball during the opening process.
3) The installation space is limited due to the large structure.
Execution standards:
Design and manufacturing: GB/T12237-2007
Structural length: GB12221-2005
Supply requirements: GB/T12252-2005
Pressure test: GB/T13927-2008
Pressure testing and inspection: GB/T13927-1992
Flange standard: GB9113/JB79
Main performance specification:
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Performance specification for Q41F/Q41PPL manual cast steel soft sealed flange ball valves |
|
Design and manufacture |
Structural length |
Flange size |
Pressure-temperature |
Test-inspection |
|
GB122237 |
GB12221 |
GB9113 JB79 |
GB9131 |
GB/T13927 JB/T9092 |
Pressure test
|
Q41F/Q41PPL Manual cast steel soft seal flange ball valve pressure test |
|
Nominal pressure |
1.6 |
2.5 |
4.0 |
|
Strength test |
2.4 |
3.8 |
6.0 |
|
Water seal test |
1.8 |
2.8 |
4.4 |
|
Air seal test |
0.4-0.7 |
Main parts material
Q41F/Q41PPL Manual Cast Steel Soft Seal Flange Ball Valve Component Materials
|
Valve body |
|
WCB |
CF8 |
CF3 |
ZG1Cr18Ni12Mo2Ti |
CF8M |
CF3M |
|
Ball valve stem |
|
201 |
304 |
304L |
1Cr18Ni12Mo2Ti |
316 |
316L |
|
Valve seat |
PTFE reinforced with slope fiber reinforced PTFE+Glass para polybenzenes PPL |
|
Gasket |
PTFE stainless steel/flexible graphite toothed gasket |
|
Valve stem seat |
PTFE stainless steel/flexible graphite |
|
Filler |
PTFE reinforced flexible graphite |
|
Packing gland |
|
1Cr18Ni9Ti |
304 |
304L |
1Cr18Ni12Mo2Ti |
316 |
316L |
|
Temperature |
-29 ℃~150 ℃ (PTFE) -29 ℃~200 ℃ (reinforced with glass fiber PTFE+GLASS ) -29 ℃~300 ℃ (para polybenzenes PPL) |
|
Medium |
Water,steam,oil |
Nitric Acid |
Strong oxidizing medium |
Acetic acid |
urea |
Main external size:
|
Q41F/Q41PPL manual cast steel soft sealed flange ball valve external structure connection dimensions |
|
Raised face flange RF
Q41F Q41PPL 16C 16P 16R |
DN |
L |
D |
D1 |
D2 |
b |
n-φd |
H |
D0 |
|
15 |
130 |
95 |
65 |
45 |
14 |
4-14 |
78 |
140 |
|
20 |
140 |
105 |
75 |
55 |
14 |
4-14 |
84 |
160 |
|
25 |
150 |
115 |
85 |
65 |
14 |
4-14 |
95 |
180 |
|
32 |
165 |
135 |
100 |
78 |
16 |
4-18 |
150 |
250 |
|
40 |
180 |
145 |
110 |
85 |
16 |
4-18 |
150 |
300 |
|
50 |
200 |
160 |
125 |
100 |
18 |
4-18 |
170 |
350 |
|
65 |
220 |
180 |
145 |
120 |
20 |
4-18 |
195 |
350 |
|
80 |
250 |
195 |
160 |
135 |
20 |
8-18 |
215 |
400 |
|
100 |
280 |
215 |
180 |
155 |
20 |
8-18 |
250 |
500 |
|
125 |
320 |
245 |
210 |
185 |
22 |
8-18 |
265 |
600 |
|
150 |
360 |
280 |
240 |
210 |
24 |
8-23 |
270 |
800 |
|
200 |
400 |
335 |
295 |
265 |
26 |
12-23 |
330 |
1200 |
|
Raised face flange RF
Q41F Q41PPL 25 25P 25R |
15 |
130 |
95 |
65 |
45 |
16 |
4-14 |
103 |
140 |
|
20 |
140 |
105 |
75 |
55 |
16 |
4-14 |
112 |
160 |
|
25 |
150 |
115 |
85 |
65 |
16 |
4-14 |
123 |
180 |
|
32 |
165 |
135 |
100 |
78 |
18 |
4-18 |
150 |
250 |
|
40 |
180 |
145 |
110 |
85 |
18 |
4-18 |
156 |
300 |
|
50 |
200 |
160 |
125 |
100 |
20 |
8-18 |
172 |
350 |
|
65 |
220 |
180 |
145 |
120 |
22 |
8-18 |
197 |
350 |
|
80 |
250 |
195 |
160 |
135 |
22 |
8-23 |
222 |
400 |
|
100 |
280 |
230 |
190 |
160 |
24 |
8-23 |
253 |
500 |
|
125 |
320 |
270 |
220 |
188 |
28 |
8-25 |
275 |
600 |
|
150 |
360 |
300 |
250 |
218 |
30 |
8-25 |
286 |
800 |
|
200 |
400 |
360 |
310 |
278 |
34 |
12-25 |
340 |
1200 |
|
Q41F/Q41PPL manual cast steel soft sealed flange ball valve external structure connection dimensions |
|
Hollow raised flange MFM
Q41F Q41PPL 40 40P 40R |
DN |
L |
D |
D1 |
D2 |
D6 |
b |
n-φd |
H |
D0 |
|
15 |
130 |
95 |
65 |
45 |
40 |
16 |
4-14 |
103 |
140 |
|
20 |
140 |
105 |
75 |
55 |
51 |
16 |
4-14 |
112 |
160 |
|
25 |
150 |
115 |
85 |
65 |
58 |
16 |
4-14 |
123 |
160 |
|
32 |
180 |
135 |
100 |
78 |
66 |
18 |
4-18 |
150 |
250 |
|
40 |
200 |
145 |
110 |
85 |
76 |
18 |
4-18 |
156 |
250 |
|
50 |
220 |
160 |
125 |
100 |
88 |
20 |
4-18 |
172 |
350 |
|
65 |
250 |
180 |
145 |
120 |
110 |
22 |
8-18 |
197 |
350 |
|
80 |
280 |
195 |
160 |
135 |
121 |
22 |
8-18 |
222 |
450 |
|
100 |
320 |
230 |
190 |
160 |
150 |
24 |
8-23 |
253 |
450 |
|
125 |
400 |
270 |
220 |
188 |
176 |
28 |
8-25 |
275 |
600 |
|
150 |
400 |
300 |
250 |
218 |
204 |
30 |
8-25 |
286 |
800 |
|
200 |
550 |
375 |
320 |
282 |
260 |
38 |
12-30 |
340 |
1200 |
|
Hollow raised flange MFM
Q41F Q41PPL 64 64P 64R |
15 |
165 |
105 |
75 |
55 |
40 |
18 |
4-14 |
105 |
140 |
|
20 |
190 |
125 |
90 |
68 |
51 |
20 |
4-18 |
125 |
160 |
|
25 |
216 |
135 |
100 |
78 |
58 |
22 |
4-18 |
135 |
250 |
|
32 |
229 |
150 |
110 |
82 |
66 |
24 |
4-23 |
150 |
350 |
|
40 |
241 |
165 |
125 |
95 |
76 |
24 |
4-23 |
165 |
350 |
|
50 |
292 |
175 |
135 |
105 |
88 |
26 |
4-23 |
175 |
450 |
|
65 |
330 |
200 |
160 |
130 |
110 |
28 |
8-23 |
200 |
450 |
|
80 |
356 |
210 |
170 |
140 |
121 |
30 |
8-23 |
210 |
600 |
<, TD vAlign=middle width="7.3%">
100
432 |
250 |
200 |
168 |
150 |
32 |
8-25 |
250 |
700 |
|
125 |
508 |
295 |
240 |
202 |
176 |
36 |
8-30 |
295 |
1100 |
|
150 |
559 |
340 |
280 |
240 |
204 |
38 |
8-34 |
340 |
1500 |
Installation precautions for ball valves:
1) During installation and construction, care must be taken to avoid hitting the valve.
2) Before installation, the ball valve should be inspected to verify its specifications and model, and to identify any damage, especially for the valve stem. Rotate it a few more times to see if it is skewed, as the valve stem is most likely to be knocked off during transportation. Also, remove any debris inside the valve.
3) When lifting a ball valve, do not tie the rope to the hand wheel or valve stem to avoid damaging these components. It should be tied to the valve body.
4) The pipeline connected to the ball valve must be cleaned thoroughly. Compressed air can be used to blow away iron oxide shavings, mud and sand, welding slag, and other debris. These debris not only easily scratch the sealing surface of the ball valve, but also block the small valve with large particles (such as welding slag), causing it to fail.
5) Leave a position for the valve handle to rotate during installation.
6) Ball valves cannot be used for throttling.
7) Ball valves with transmission mechanisms should be installed upright.
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