CYk43F Series Pilot Operated Piston Pressure Reducing Valves
1. Features
CYk43F series valves are a kind of pilot operated piston pressure reducing valves which
is suitable for air pipeline. Each pressure reducing valve is made up of two major parts:
the main valve and a pilot valve. The main valve is made of valve seat, valve disc, piston,
cylinder sleeves and spring etc., and pilot valve is made of valve seat, valve disc, diaphragm,
spring and adjusting spring.
2. Main technical specification
Resistance pressure (MPa)
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
Shell test pressure (MPa)
|
2.4
|
3.75
|
6.0
|
9.6
|
15.0
|
24
|
Seal test pressure (MPa)
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
Max. Inlet pressure (MPa)
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
Outlet 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
|
Min. differential pressure(MPa)
|
0.15
|
0.15
|
0.2
|
0.4
|
0.8
|
1.0
|
Leakage
|
GB12245-1989
|
Remark: The shell test don’t include test of diaphragms and valve top cover.
3. Material of main spare parts
Name of spare parts
|
Material of spare parts
|
Valve Body / cover
|
Cast steel (WCB)
|
Valve seat / valve disc
|
2Cr13
|
Cylinder sleeves
|
2Cr13/25 (plating hard chrome)
|
Piston
|
2Cr13
|
Piston ring
|
metal cast iron
|
Valve seat / valve rod of pilot valve
|
2Cr13
|
Diaphragms
|
Stainless Steel (1Cr18Ni9Ti)
|
Springs of main Valve & pilot valve
|
50CrVA
|
Pressure regulating spring
|
60Si2Mn
|
Sealing gasket
|
2Cr13/25 (plating hard chrome)
|
4. Flow rate (Cv)
Size (mm)
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
250
|
300
|
350
|
400
|
Cv
|
1
|
2.5
|
4
|
6.5
|
9
|
16
|
25
|
36
|
64
|
100
|
140
|
250
|
400
|
570
|
780
|
1020
|
5. Size and Dimensions (mm)
PN1.6-4.0
Size (mm)
|
L
|
H
|
H1
|
1.6/2.5MPa
|
4.0 MPa
|
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
|
PN6.4-16.0
Size (mm)
|
L
|
H
|
H1
|
6.4MPa
|
10.0/16.0MPa
|
15
|
180
|
180
|
300
|
100
|
20
|
180
|
200
|
310
|
105
|
25
|
200
|
220
|
310
|
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
|
|