Q41F/Q41H/Q41Y manual floating stainless steel 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.
Main performance specification:
Performance Specification for Q41F Q41H Q41Y Manual Floating Stainless Steel Ball Valve |
Design and manufacture |
Structural length |
Flange size |
Pressure-Temperature |
Test-Inspection |
GB122237 |
GB12221 |
GB9113 JB79 |
GB9131 |
GB/T13927 JB/T9092 |
Pressure test:
Q41F Q41H Q41Y Manual Floating Stainless Steel 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 Q41H Q41Y Manual Floating Stainless Steel Ball Valve Component Material
Valve body |
|
ZG1Cr18Ni9Ti |
CF8 |
CF3 |
ZG1Cr18Ni12Mo2Ti |
CF8M |
CF3M |
Ball valve stem |
|
1Cr18Ni9Ti |
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 Q41H Q41Y Manual Floating Stainless Steel Ball Valve External Structure Connection Dimensions |
Raised face flange RF Q41F/Q41H/Q41Y16C 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/Q41H/Q41Y 25C 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 Q41H Q41Y Manual Floating Stainless Steel Ball Valve External Structure Connection Dimensions |
Hollow raised flange MFM Q41F/Q41H/Q41Y40C 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/Q41H/Q41Y 64C 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 |
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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