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Structure characteristics and use of steam pressure reducing valve: High sensitivity steam pressure reducing valve belongs to pilot piston pressure reducing valve. It consists of main valve and pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other parts.
Item NO.:
XUVAL77-39Lead Time:
45DaysProduct Orgin:
CHINABrand:
XUVALShipping Port:
ShanghaiPayment:
100%TTColor:
SilveryMOQ:
10YG43H high sensitivity steam pressure reducing valve
Pilot valve is mainly composed of valve seat, disc, diaphragm, spring, adjusting spring and other parts. The outlet pressure is set by adjusting the spring pressure, the diaphragm is used to sense the outlet pressure change, and the pilot valve is opened and closed to drive the piston to adjust the flow area of the throttle part of the main valve, so as to realize the function of pressure reduction and stabilization.
Based on the common pressure reducing valve, the following improvements have been made to the high sensitivity steam pressure reducing valve, such as increasing the piston area, changing the throttle structure, changing the sealing form, improving the guide valve structure and adjusting spring form, so as to improve the performance of the product from the following aspects.
High sensitivity steam pressure reducing valve improves the sensing efficiency of outlet pressure change, improves the sensitivity, and greatly reduces the pressure deviation caused by upstream pressure change, flow change and other factors. The streamline distribution is improved and the noise is reduced. The structure of the sealing surface is improved and the service life of the sealing surface is prolonged. This product is mainly used for steam pipeline, which is suitable for steam pipeline with large inlet pressure change and large flow change.
Standard of steam pressure reducing valve: standard of mechanical department or customized non-standard
Model of steam pressure reducing valve: YG43H
Nominal diameter of steam pressure reducing valve: 15mm-80mm
Service pressure of steam pressure reducing valve: 1.6MPa-2.5MPa
Connection mode of steam pressure reducing valve: flange connection
Steam pressure reducing valve type: spring type
Main functions of steam pressure reducing valve: it plays a role of pressure reduction protection
Medium for steam pressure reducing valve: steam pipe
Steam pressure reducing valve material: cast steel. Stainless steel
Main technical parameters and performance indexes of YG43H/Y high sensitivity steam pressure reducing valve:
Nominal pressure (MPa)
1.0
1.6
Shell test pressure (MPa)*
1.5
2.4
Sealing test pressure (MPa)
1.0
1.6
Maximum inlet pressure (MPa)
1.0
1.6
Outlet pressure range (MPa)
0.04~0.6
0.04~1.0
Pressure characteristic deviation (MPa) △ Pp2P
GB12246-1989
Flow characteristic deviation (MPa) P2G
GB12246-1989
Minimum pressure difference (MPa)
0.05
0.07
Leakage volume
GB12245-1989
Main parts materials of YG43H/Y high sensitivity steam pressure reducing valve:
Part name
Material of parts
Body, cover and bottom cover
WCB
Seat ,disc
2Cr13
Cylinder, liner piston
Aluminum iron bronze
Diaphragm
PH15-7Mo
Piston ring
Para polyphenylene
Guide seat and guide disc
2Cr13
Main valve spring
50CrVA
Guide and adjust the main spring
50CrVA
Adjusting spring
60Si2Mn
YG43H/Y high sensitivity steam pressure reducing valve flow coefficient (Cv):
DN
15
20
25
32
40
50
65
80
Cv
1
2.5
4
6.5
9
16
25
36
Connection dimensions of YG43H/Y high sensitivity steam pressure reducing valve:
Nominal diameter
DN
Dimensions
Connection size
L
H
H1
PN1.0MPa
PN1.6MPa
D
K
n-Φ
d
C
D
K
n-Φ
d
C
15
140
160
65
95
65
414
45
12
95
65
414
45
14
20
140
160
65
105
75
414
55
14
105
75
414
55
14
25
150
168
68
115
85
414
65
14
115
85
414
65
14
32
180
185
75
135
100
418
78
16
135
100
418
78
16
40
180
185
78
145
110
418
85
16
145
110
418
85
16
50
200
193
88
160
125
418
100
16
160
125
418
100
16
65
230
208
98
180
145
418
120
18
180
145
418
120
18
80
260
228
117
195
160
418
135
18
195
160
818
135
20
Product performance:
1. The sensing efficiency of outlet pressure change is improved, the sensitivity is improved, and the pressure deviation caused by upstream pressure change, flow change and other factors is greatly reduced.
2. The streamline distribution is improved and the noise is reduced.
3. The structure of the sealing surface is improved and the service life of the sealing surface is prolonged.
High sensitivity steam pressure reducing valve belongs to pilot piston pressure reducing valve. It consists of main valve and pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other parts. Pilot valve is mainly composed of valve seat, disc, diaphragm, spring, adjusting spring and other parts. The outlet pressure is set by adjusting the spring pressure, the diaphragm is used to sense the outlet pressure change, and the pilot valve is opened and closed to drive the piston to adjust the flow area of the throttle part of the main valve, so as to realize the function of pressure reduction and stabilization.
Pressure reducing valve is mainly used in steam pipeline, which is suitable for steam pipeline with large inlet pressure change and large flow change.
Pressure regulating steps of pressure reducing valve:
1 Close the gate valve in front of the pressure reducing valve and open the gate valve behind the pressure reducing valve to create the downstream low pressure environment.
Turn the adjusting screw counterclockwise to the top position (relative to the lowest outlet pressure), and then close the back gate valve of the pressure reducing valve.
2 Slowly open the gate valve in front of the pressure reducing valve to full open;
3 Slowly turn the adjusting screw clockwise to adjust the outlet pressure to the required pressure (based on the gauge pressure behind the valve); After adjustment, lock the lock.
4. Open the back gate valve of the pressure reducing valve by locking the nut.
5. If the outlet pressure is higher than the set pressure during adjustment, it must be readjusted from the first step, that is, it can only be adjusted from low pressure to high pressure.
Product structure chart:
Packing & Delivery :
Packing Details:all by seaworthy plywood case and packed strongly by packing belt as below
Delivery Details:Generally it is 5-10 days if the goods are in stock. or15-30 days if the goods are OEM or not
enough subject to the order quantity. But anyway, normally, we are able to make sure the delivery will not exceed 45days.
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