| Guide piston type gas relief pressure valve of Model Yk43X/F/Y |
| Type of the products: Yk43X/F/Y |
|
|
Structure characteristic and use :
This serial relief pressure valves are guide piston type relief pressure valves . And lead the valve by the main valve two parts make up . The main valve is made up of such parts as valve seat , main valve one , piston , spring ,etc. mainly. Lead the valve and make up by such parts as valve seat , valve one , diaphragm , spring , regulating the spring ,etc. mainly. Establish and exports the pressure , utilizes sensing of the diaphragm to export the pressure change through regulating the spring pressure, through lead valve is it urge piston regulate main valve reduce expenditure position is it shed the size of the area to pass to open and close, realize the depression steady voltage function.
This product is used in the gas pipeline mainly, for instance such gas as air , nitrogen , oxygen , hydrogen , liquefied gas , natural gas ,etc.. |
Main technical parameter and performance index :
|
Nominal pressure (Mpa)
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
|
Test pressure of the shell (Mpa ) is *
|
2.4
|
3.75
|
6.0
|
9.6
|
15.0
|
24
|
|
Sealed test pressure (Mpa)
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
|
Supreme inlet pressure (Mpa)
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
|
Export to the pressure range (Mpa)
|
0.1-1.0
|
0.1-1.6
|
0.1-2.5
|
0.5-3.5
|
0.5-3.5
|
0.5-4.5
|
|
Characteristic deviation of the pressure (Mpa) P2P
|
GB12246-1989
|
|
P2G of characteristic deviation of the flow (Mpa )
|
GB12246-1989
|
|
Press difference minimumly (Mpa)
|
0.15
|
0.15
|
0.2
|
0.4
|
0.8
|
1.0
|
|
Seepage amount
|
X/F (gather four Fluorine the seconds rare /rubber): O Y (seal hard): GB12245-1989
|
*: The shell is tested and does not include the diaphragm , top cover |
Major part material :
|
Part name
|
Part material
|
|
The valve has body The valve covering The bottom covering
|
WCB/FCB*
|
|
Valve seat Valve plate
|
2Cr13/304*
|
|
Jar set
|
2Cr13/25 (plates the hard chromium ) / 304*
|
|
Piston
|
2Cr13 / copper alloy / the copper alloy *
|
|
Piston-ring
|
Alloy casting iron / the counterpoint polyphenyl is *
|
|
Lead the valve seat Lead the valve stem
|
2Cr13/304*
|
|
Diaphragm
|
1Cr18Ni9Ti
|
|
Main valve Lead the valve spring
|
50CrVA
|
|
Regulate the spring
|
60Si2Mn
|
|
Sealed cushion (X/F type )
|
Rubber /gather four Fluorine the seconds rare
|
|
Lead the valve body Lead the valve to cover
|
25/304*
|
*: Material when the oxygen medium |
Flow coefficient (Cv ):
| DN |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
500 |
| Cv |
1 |
2.5 |
4 |
6.5 |
9 |
16 |
25 |
36 |
64 |
100 |
140 |
250 |
400 |
570 |
780 |
1020 |
1500 |
|
The external dimension (PN1.6-4.0 ): Unit: mm
|
Nominal open DN directly
|
External dimension
|
|
L
|
H
|
Hl
|
|
1.6/2.5MPa
|
4.0MPa
|
|
15
|
160
|
180
|
290
|
90
|
|
20
|
160
|
180
|
300
|
98
|
|
25
|
180
|
200
|
300
|
110
|
|
32
|
200
|
220
|
300
|
110
|
|
40
|
220
|
240
|
320
|
125
|
|
50
|
250
|
270
|
320
|
125
|
|
65
|
280
|
300
|
325
|
130
|
|
80
|
310
|
330
|
365
|
160
|
|
100
|
350
|
380
|
365
|
170
|
|
125
|
400
|
450
|
475
|
200
|
|
150
|
450
|
500
|
475
|
210
|
|
200
|
500
|
550
|
515
|
240
|
|
250
|
650
|
560
|
290
|
|
300
|
800
|
705
|
335
|
|
350
|
850
|
745
|
375
|
|
400
|
900
|
780
|
405
|
|
450
|
900
|
730
|
455
|
|
500
|
950
|
835
|
465
|
|
The external dimension (PN6.4-16.0 ): Unit: mm
|
Nominal open DN directly
|
External dimension
|
|
L
|
H
|
Hl
|
|
6.4MPa
|
10.0/16.0MPa
|
|
15
|
180
|
180
|
300
|
100
|
|
20
|
180
|
200
|
310
|
105
|
|
25
|
200
|
220
|
31
|
120
|
|
32
|
220
|
230
|
310
|
120
|
|
40
|
240
|
240
|
335
|
135
|
|
50
|
270
|
300
|
335
|
135
|
|
65
|
300
|
340
|
340
|
140
|
|
80
|
330
|
360
|
380
|
170
|
|
100
|
380
|
380
|
185
|
|
125
|
450
|
490
|
215
|
|
150
|
500
|
490
|
225
|
|
200
|
550
|
535
|
260
|
|
250
|
650
|
580
|
310
|
|
300
|
800
|
725
|
355
|
|
350
|
850
|
765
|
395
|
|
400
|
900
|
800
|
435
|
|
500
|
950
|
|
855
|
495
|
|
Order notice:
Type of the products Nominal pressure Nominal and open directly Connect the flange standard Medium and medium temperature that the coefficient Cv inlet pressure of the specified flow regulates the range and works
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