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Y43H/Y-shaped piston type steam pressure reducing valve
The structural characteristics and uses of Y43H/Y-shaped piston type steam pressure reducing valve. This series of pressure reducing valves belongs to
Product details
Y43H/Y-shaped piston type steam pressure reducing valveStructural characteristics and uses
This series of pressure reducing valves belongs to the pilot piston pressure reducing valve. It consists of two parts: the main valve and the pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other parts. The pilot valve is mainly composed of valve seat, valve disc, diaphragm, spring, regulating spring and other parts. By adjusting the spring pressure to set the outlet pressure, using a diaphragm to sense changes in outlet pressure, and driving the piston to adjust the size of the overcurrent area at the throttle position of the main valve through the opening and closing of the pilot valve, the pressure reduction and stabilization function is achieved.
Y43H/Y-shaped piston type steam pressure reducing valveThe main product is mainly used in steam pipelines to reduce pressure and stabilize pressure
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Nominal pressure (Mpa)
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1.6
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2.5
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4.0
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6.4
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10.0
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16.0
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Shell test pressure (Mpa)*
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2.4
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3.75
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6.0
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9.6
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15.0
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24
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Sealing test pressure (Mpa)
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1.6
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2.5
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4.0
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6.4
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10.0
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16.0
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Maximum import pressure (Mpa)
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1.6
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2.5
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4.0
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6.4
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10.0
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16.0
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Export pressure range (Mpa)
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0.1-1.0
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0.1-1.6
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0.1-2.5
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0.5-3.5
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0.5-3.5
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0.5-4.5
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Pressure characteristic deviation (Mpa) △ P2P
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GB12246-1989
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|||||
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Flow characteristic deviation (Mpa) P2G
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GB12246-1989
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|||||
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Minimum pressure difference (Mpa)
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0.15
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0.15
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0.2
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0.4
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0.8
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1.0
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Leakage rate
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GB12245-1989
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|||||
Shell test does not include diaphragm and top cover
Y43H/Y-shaped piston type steam pressure reducing valve main component materials
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Part name
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Part Material
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Valve body, valve cover, bottom cover
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WCB
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Valve seat disc
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2Cr13
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LINER
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2Cr13/25 (hard chrome plating)
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piston
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2Cr13/copper alloy
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piston ring
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alloy cast iron
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Guide valve seat and guide valve stem
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2Cr13
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diaphragm
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1Cr18Ni9Ti
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Main valve spring
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50CrVA
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Main spring of pilot valve
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50CrVA
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Adjusting spring
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60Si2Mn
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Dimensions of Y43H/Y-shaped piston type steam pressure reducing valve (PN1.6-4.0)
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Nominal Diameter
DN |
External dimensions
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|||
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L
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H
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Hl
|
||
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1.6/2.5MPa
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4.0MPa
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|||
|
15
|
160
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180
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295
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90
|
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20
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160
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180
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330
|
98
|
|
25
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180
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200
|
330
|
110
|
|
32
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200
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220
|
330
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110
|
|
40
|
220
|
240
|
345
|
125
|
|
50
|
250
|
270
|
345
|
125
|
|
65
|
280
|
300
|
350
|
130
|
|
80
|
310
|
330
|
385
|
160
|
|
100
|
350
|
380
|
385
|
170
|
|
125
|
400
|
450
|
400
|
200
|
|
150
|
450
|
500
|
415
|
210
|
|
200
|
500
|
550
|
475
|
240
|
|
250
|
650
|
525
|
290
|
|
|
300
|
800
|
580
|
335
|
|
|
350
|
850
|
620
|
375
|
|
|
400
|
900
|
660
|
405
|
|
|
450
|
900
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730
|
455
|
|
|
500
|
950
|
750
|
465
|
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Dimensions of Y43H/Y-shaped piston type steam pressure reducing valve (PN6.4-16.0)
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Nominal Diameter
DN |
External dimensions
|
|||
|
L
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H
|
Hl
|
||
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6.4MPa
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10.0/16.0MPa
|
|||
|
15
|
180
|
180
|
305
|
105
|
|
20
|
180
|
200
|
340
|
105
|
|
25
|
200
|
220
|
340
|
120
|
|
32
|
220
|
230
|
340
|
120
|
|
40
|
240
|
240
|
355
|
135
|
|
50
|
270
|
300
|
355
|
135
|
|
65
|
300
|
340
|
360
|
140
|
|
80
|
330
|
360
|
395
|
17
|
|
100
|
380
|
400
|
185
|
|
|
125
|
450
|
415
|
215
|
|
|
150
|
500
|
430
|
225
|
|
|
200
|
550
|
495
|
260
|
|
|
250
|
650
|
545
|
310
|
|
|
300
|
800
|
600
|
355
|
|
|
350
|
850
|
640
|
395
|
|
|
400
|
900
|
690
|
435
|
|
|
500
|
950
|
780
|
495
|
|
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