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Conventional pressure: – ПОУ 22П – РN40 [4,0 MPa (40 kgf/cm2)]; – ПОУ 22П.1 – РN16 [1,6 MPa (16 kgf/cm2)]; – ПОУ 22П.2 – РN25 [2,5 MPa (25 kgf/cm2)]; – ПОУ 22П.3 – РN63 [6,3 MPa (63 kgf/cm2)]; – ПОУ 22П.4 – РN100 [10,0 MPa (100 kgf/cm2)]. Structural performance – with the screw seat. The seat and the closure have built-up welding with the wear-resistance material. Rod seal – gland seal. Body: straightway. Connection to the pipeline – flanged. Connection dimensions according to GOST 12815-80, performance 5. Return (mounting) flanges – according to GOST 12821-80 performance 4. The admissible leakage in the closure, in % of the conventional discharge capacity: – £ 0,01 % (IV leak-proofness grade in the closure according to GOST 23866-87). |
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Correlation of code Кvу (conventional discharge capacity of the valve) and the port area of the valves type ПОУ 22П, ПОУ 22П.1, ПОУ 22П.2, ПОУ 22П.3 and ПОУ 22П.4:
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Code Кvу |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
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Кvу, m3/h |
10,0 |
16,0 |
25,0 |
40,0 |
63,0 |
100,0 |
160,0 |
250,0 |
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Port area |
DN32 (code 8) |
Л,Р |
Л,Р |
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DN40 (code 9) |
Л,Р |
Л,Р |
Л,Р |
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DN50 (code 4) |
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Л,Р |
Л,Р |
Л,Р |
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DN65 (code 10) |
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Л,Р |
Л,Р |
Л,Р |
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DN80 (code 5) |
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Л,Р |
Л,Р |
Л,Р |
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DN100 (code 6) |
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Л,Р |
Л,Р |
Л,Р |
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DN150 (code 7) |
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Л,Р |
Л,Р |
Л,Р |
Л,Р |
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The admissible differential pressure of the valves (DР), calculated under the condition, that the pressure after the valve is equal to zero:
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Port area |
Sу, mm |
Кvу, m3/h |
“On closure” (channel closing) |
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Action type |
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“NC” |
“NO” |
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Admissible differential pressure, DР, MPa |
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DN 32 |
25 |
10,0 |
1,0 |
1,0 |
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16,0 |
0,8 |
0,8 |
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DN 40 |
25 |
10,0 |
1,0 |
1,0 |
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16,0 |
0,8 |
0,8 |
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25,0 |
0,5 |
0,5 |
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DN 50 |
25 |
16,0 |
1,0 |
1,0 |
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25,0 |
0,8 |
0,8 |
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40,0 |
0,5 |
0,5 |
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DN 65 |
40 |
25,0 |
1,0 |
1,0 |
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40,0 |
0,8 |
0,8 |
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63,0 |
0,5 |
0,5 |
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DN 80 |
40 |
40,0 |
1,0 |
1,0 |
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63,0 |
0,8 |
0,8 |
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100,0 |
0,5 |
0,5 |
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DN 100 |
60 |
63,0 |
1,0 |
1,0 |
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100,0 |
0,8 |
0,8 |
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160,0 |
0,5 |
0,5 |
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DN 150 |
60 |
100,0 |
1,0 |
1,0 |
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160,0 |
0,8 |
0,8 |
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250,0 |
0,5 |
0,5 |
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