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Brief introduction of piston type internal thread steam pressure reducing valve: The internal thread piston steam pressure reducing valve consists of two parts: the main valve and the pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, cylinder liner, spring and other parts. The pilot valve is mainly composed of valve seat, valve clack, 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 main valve throttling part to realize the function of pressure reduction and stabilization.
Item NO.:
XUVAL77-80Lead Time:
45DaysProduct Orgin:
CHINABrand:
XUVALShipping Port:
ShanghaiPayment:
100%TTColor:
SilveryMOQ:
10Piston type internal thread steam pressure reducing valve
Structural features and uses of internal thread piston steam pressure reducing valve:
The internal thread piston steam pressure reducing valve consists of two parts: the main valve and the pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, cylinder liner, spring and other parts. The pilot valve is mainly composed of valve seat, valve clack, 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 main valve throttling part to realize the function of pressure reduction and stabilization. Internal thread piston type steam pressure reducing valve is mainly used in steam pipelines to reduce pressure and stabilize pressure.
Steps to adjust the pressure of the pressure reducing valve:
1. Close the gate valve in front of the pressure reducing valve and open the gate valve after the pressure reducing valve to create a downstream low pressure environment. Turn the adjusting screw counterclockwise to the uppermost position (relative to the lowest outlet pressure), and then close the gate valve after the pressure reducing valve.
2. Slowly open the gate valve in front of the pressure reducing valve to fully open;
3. Slowly turn the adjusting screw clockwise to adjust the outlet pressure to the required pressure (according to the gauge pressure behind the valve); after adjustment, lock it
4. Lock the nut and open the gate valve after opening the pressure relief valve
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.
Steam pressure reducing valve model: Y13H Y13Y
Nominal diameter of steam pressure reducing valve: 15mm-50mm
Steam pressure reducing valve Working pressure: 1.6MPa-10MPa
Steam pressure reducing valve Connection method: threaded connection
Steam pressure reducing valve Form: spring type
Steam pressure reducing valve Main function: play a role of pressure reduction protection
Steam pressure reducing valve use medium: steam pipeline
Steam pressure reducing valve Material: cast steel, stainless steel, chromium molybdenum steel
Steam pressure reducing valve Standard: Ministry of Machinery standard or customized non-standard
The main technical parameters and performance indicators of the internal thread piston steam pressure reducing valve:
Nominal pressure (Mpa)
1.6
2.5
Shell test pressure (Mpa)*
2.4
3.75
Seal test pressure (Mpa)
1.6
2.5
Maximum inlet pressure (Mpa)
1.6
2.5
Outlet pressure range (Mpa)
0.1-1.0
0.1-1.6
Pressure characteristic deviation (Mpa)△P2P
GB12246-1989
Flow characteristic deviation (Mpa)△P2G
GB12246-1989
Minimum pressure difference
0.15
0.15
Leakage
GB12245-1989
Material of main parts of internal thread piston steam pressure reducing valve:
Part Name
Part material
Body bonnet bottom cover
WCB
Seat Disc
2Cr13
Cylinder liner
2Cr13/25 (hard chrome plating)
Piston
2Cr13/Copper alloy
Piston ring
Alloy cast iron
Pilot valve seat Pilot valve stem
2Cr13
Diaphragm
1Cr18Ni9Ti
Main valve spring
50CrVA
Pilot valve main spring
50CrVA
Adjusting spring
60Si2Mn
Flow coefficient (Cv) of internal thread piston steam pressure reducing valve:
DN
15
20
25
32
40
50
CV
1
2.5
4
6.5
9
16
Internal thread piston type steam pressure reducing valve connection size:
Nominal diameter DN
G
L
H
H1
15
1/2"
140
295
90
20
3/4"
140
330
98
25
1"
160
330
110
32
1-1/4"
180
330
110
40
1-1/4"
200
345
125
50
2"
230
345
125
Product Structure:
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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