Click to enlarge
This series pressure reducing valve is a new type regulating valve which adopts piston to replac the diaphragm. The performance is reliable and it's can be used for a long time. The down pressure can be adjusted according to the requirement, and it can be set at a fixed pressure in the application, which won't be changed as the fluctuation of the up pressure and the flowing rate.
Field of Application.
Pressure Rating: 1.0- 6.4Mpa
Nominal Diameter: DN20-400
Body Material: Steel, CF8
Standard flanges: DIN, ANSI, JIS.
Main Technical Parameters and Indexes of Performance.
|
Nominal pressure |
PN1.6Mpa |
PN2.5Mpa |
PN4.0Mpa |
PN6.4Mpa |
|
Tested pressure of shell |
2.4Mpa |
3.75Mpa |
6.0Mpa |
9.6Mpa |
|
Sealing test pressure |
1.6Mpa |
2.5Mpa |
4.0Mpa |
6.4Mpa |
|
Maximum upstream pressure |
1.6Mpa |
2.5Mpa |
4.0Mpa |
6.4Mpa |
|
Pressure range of outlet |
0.2-1.0Mpa |
0.2-1.6Mpa |
0.2-2.5Mpa |
0.5-3.5Mpa |
|
Minimum differential pressure |
0.2Mpa |
0.2Mpa |
0.2Mpa |
0.4Mpa |
|
Medium |
Steam, water, etc. |
|||
|
Operating temperature |
425 |
|||
*the shell test does not include membrane and top cover.
Flow Characteristics.
|
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 |
Material of Main Component.
|
Name of component |
Material of component |
|
Valve body, valve cover, seat cover |
Cast iron, Cast steel |
|
Valve seat, |
2Cr13 |
|
Valve flap |
2Cr13 |
|
Valve rod |
2Cr13 |
|
Cylinder sleeve |
2Cr13 /25(hard chrome plating) |
|
Piston |
2Cr13 |
|
O-shaped ring |
Ding nitrile rubber |
|
Sealing encircles |
Ding nitrile rubber |
|
Adjusting valve |
60Si2Mn |
Main External Dimensions.
 |
|
DN |
External Dimension |
|||||||||||||
|
L |
H |
H1 |
||||||||||||
|
1.6/2.5 Mpa |
4.0 Mpa |
6.4 Mpa |
1.6 Mpa |
2.5 Mpa |
4.0 Mpa |
6.4 Mpa |
1.6 Mpa |
2.5 Mpa |
4.0 Mpa |
6.4 Mpa |
||||
|
20 |
160 |
160 |
170 |
220 |
220 |
220 |
220 |
90 |
90 |
90 |
90 |
|||
|
25 |
180 |
200 |
200 |
255 |
255 |
265 |
265 |
95 |
95 |
100 |
105 |
|||
|
32 |
200 |
220 |
220 |
255 |
255 |
265 |
265 |
100 |
100 |
100 |
110 |
|||
|
40 |
220 |
240 |
240 |
325 |
325 |
330 |
330 |
115 |
115 |
130 |
130 |
|||
|
50 |
250 |
270 |
270 |
325 |
325 |
330 |
330 |
120 |
120 |
135 |
135 |
|||
|
65 |
260 |
280 |
300 |
330 |
330 |
340 |
355 |
125 |
125 |
140 |
145 |
|||
|
80 |
310 |
330 |
330 |
340 |
340 |
340 |
340 |
135 |
135 |
150 |
160 |
|||
|
100 |
350 |
380 |
380 |
347 |
347 |
360 |
360 |
148 |
148 |
185 |
185 |
|||
|
125 |
400 |
450 |
450 |
560 |
560 |
565 |
565 |
190 |
200 |
200 |
245 |
|||
|
150 |
450 |
500 |
500 |
580 |
580 |
585 |
585 |
205 |
210 |
240 |
280 |
|||
|
200 |
500 |
560 |
560 |
630 |
630 |
635 |
635 |
220 |
245 |
245 |
310 |
|||
|
250 |
600 |
750 |
270 |
|||||||||||
|
300 |
800 |
780 |
310 |
|||||||||||
|
350 |
850 |
850 |
390 |
|||||||||||
|
400 |
900 |
925 |
420 |
|||||||||||