Valve manufacturing company
Control Valve
Home

Control Valve

Piston type steam pressure reducing valve

Piston type steam pressure reducing valve

Product introduction: Piston type steam pressure reducing valve is to control the opening of the opening and closing parts in the valve body to adjust the flow of the medium and reduce the pressure of the medium. At the same time, it can adjust the opening of the opening and closing parts with the help of the pressure behind the valve to keep the pressure behind the valve within a certain range. In the case of constant change of the inlet pressure, it can keep the outlet pressure within the set range and protect the subsequent life and production appliances.

  • Item NO.:

    XUVAL77-48
  • Lead Time:

    45Days
  • Product Orgin:

    CHINA
  • Brand:

    XUVAL
  • Shipping Port:

    Shanghai
  • Payment:

    100%TT
  • Color:

    Silvery
  • MOQ:

    10
Products Details

Piston type steam 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.


Model of steam pressure reducing valve: Y43H Y43wW
Nominal diameter of steam pressure reducing valve: 15mm-500mm
Service pressure of steam pressure reducing valve: 1.6mpa-16mpa
Connection mode of steam pressure reducing valve: flange connection
Steam pressure reducing valve type: spring type
Main function of steam pressure reducing valve: pressure reducing protection
Medium used for steam pressure reducing valve: steam pipe
Material of steam pressure reducing valve: cast steel, stainless steel, chrome molybdenum steel
Standard of steam pressure reducing valve: standard of mechanical department or customized non-standard


Main technical parameters and performance indexes of piston steam pressure reducing valve:

Nominal 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
Sealing test pressure (MPa)
1.6 2.5 4.0 6.4 10.0 16.0
Maximum 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
Pressure characteristic deviation (MPa) △ P2P
GB12246-1989
Flow characteristic deviation (MPa)P2G
GB12246-1989
Minimum pressure difference (MPa)
0.15 0.15 0.2 0.4 0.8 1.0
Leakage volume
GB12245-1989
The shell test does not include diaphragm and top cover


Material of main parts of piston type steam pressure reducing valve:

Part name
Material of parts
Body, cover and bottom cover
WCB
Seat disc
2Cr13
Cylinder liner
2Cr13/25 (hard chromium plating)
Piston
2cr13/copper alloy
Piston ring
Alloy cast iron
Guide valve seat and guide valve stem
2Cr13
Diaphragm
1Cr18Ni9Ti
Main valve spring
50CrVA
Main spring of pilot valve
50CrVA
Adjusting spring
60sI2Mn


Dimensions of piston type steam pressure reducing valve (PN1.6-4.0):

Nominal diameter
DN
Dimensions
L H H1
1.6/2.5MPa 4.0MPa
15 160 180 295 90
20 160 180 330 98
25 180 200 330 110
32 200 220 330 110
40 220 240 345 125
50 250 270 345 125
65 280 300 350 130
80 310 330 385 160
100 350 380 385 160
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
450 900 730 455
500 950 750 465


Dimensions of piston type steam pressure reducing valve (PN6.4-16.0):

Nominal diameter
DN
Dimensions
L H H1
6.4MPa 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
80 330 360 395 170
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


Installation and use:
1. The pressure reducing valve y43h-16 is equipped with 0.05 ~ 0.4MPa, Y43H-25, 1 ~ 1.6Mpa, Y43H-40, 1 ~ 1.6Mpa, 1.6 ~ 2.5MPa adjusting spring, Y43H-64 and 1 ~ 3Mpa adjusting spring. The valve is equipped with 0.1 ~ 1MPa adjusting spring when leaving the factory, and the rest is attached with the valve. The user can choose according to the outlet pressure value
2. Before installing the pressure reducing valve, the pipeline system must be washed and cleaned to prevent welding slag and oxide scale from flowing into the valve and affecting the normal operation of the valve
3. The pressure reducing valve should be installed in a place convenient for operation and maintenance, and it must be vertically installed on the horizontal pipeline (see the installation diagram). Attention should be paid to make the flow direction of medium in the pipeline consistent with the direction indicated by the arrow on the valve body, and do not reverse install,
4. When the pressure reducing valve is installed and used, the stop valve of the bypass pipeline should be opened to eliminate the mixture of condensate water and steam water in the pipeline, so as to prevent the pressure reducing valve from being damaged by water hammer when the pressure reducing valve is opened. When there is no abnormal phenomenon, slowly rotate the adjusting screw clockwise to adjust the outlet pressure to the required pressure (based on the gauge pressure behind the valve). After adjustment, back tighten the lock nut, Screw on protective cover
5. A filter should be installed before the pressure reducing valve to prevent impurities in the medium from entering the pressure reducing valve and affecting its performance
6. There should be a straight pipe before and after the pressure reducing valve. The length of the straight pipe in front of the valve is about 600mm, and the length of the straight pipe behind the valve is about 1000mm
The pressure relief valve on your steam line does not match the current line pressure. But in principle, it can still pass through steam. Because the pressure reducing valve is controlled by the outlet pressure, now the outlet pressure is not enough, the main valve is in the full open state.
However, if there are still some problems in the long run, the general pressure reducing valve requires that the pressure difference between the inlet and outlet must be ≥ 0.2MPa.
The pressure reducing valve usually has a variety of specifications such as DN50 ~ DN 100, the working pressure before and after the valve is < 1MPa and 0.1 ~ 0.5MPa respectively, and the pressure regulating range error is ± 5%~10%。
It should be noted that although the water flow through the pressure reducing valve has a great head loss, it is still energy-saving in general because it reduces the waste of water, makes the flow distribution of the system reasonable and improves the system layout and working conditions.
D valve installation composition: it is composed 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 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
2. 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
3. Slowly open the gate valve in front of the pressure reducing valve to full open;
4. Slowly turn the adjusting screw clockwise to adjust the outlet pressure to the required pressure (subject to the gauge pressure behind the valve); After adjustment, lock the lock nut and open the back gate valve of the pressure reducing valve
5. If the outlet pressure is higher than the set pressure, 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.






Send A Message

If you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.

Related Products
Remote control float valve
Cast iron remote control float valve 100X

Competitive Advantage: 1. 18 Months Guarantee for quality. 2.OEM manufacturer, print client’s LOGO on the valve body. 3.Offer Operation Manual & Install Introduction for safety use. 4.Offer manufacturer’s reasonable price to win the market for both. 5.Accept any the third party inspection. 6.As a factory, every production process can be controlled during manufacture. 7.Offer inspection & testing reports for raw materials, production process, wall thickness, face to face dimension, pressure test, welding test, painting test, etc.

Pressure reducing valve
200X Pressure reducing valve

200X pressure reducing valve is a kind of valve used for parallel connection of fire water and domestic water in the water supply system, used to allocate the direction of water supply.

Slow closing check valve
Stainless steel 300X Slow close check valve

Check valve can regulate the opening and closing speed. When the pump starts or stops running, it can be adjusted to the best opening or closing speed with the on-site adjustment.It is suitable for mining enterprises and high-rise buildings to reduce water hammer and water hammer in direct water supply and drainage system by water pump, so as to achieve the effect of safe closing.

500X pressure relieving/sustaining valve
Stainless steel 500X pressure relief valve

The 500X relief/hold valve is mainly used in fire fighting or other water supply systems to prevent system overpressure or to maintain pressure in fire fighting water supply systems.

400X Flow control valve
Cast iron 400X Flow control valve

400X flow control valve is a kind of valve used to allocate the direction of water supply in parallel water supply system for fire protection and domestic use.

600X hydraulic electric valve
Cast iron 600X hydraulic electric control valve

The 600X electric control valve is a hydraulic operated valve with solenoid valve as the guide valve.

700X Pump control valve
700X Water pump control vavle

700X water pump control valve is a kind of reverse valve installed at the outlet of water pump in high-rise buildings and other water supply systems to prevent the backflow of media.

Brass pressure reducing valve
Brass flange pressure reducing valve

Flange pressure reducing valve from the general thread of the pressure reducing valve, its connection flange, this is a control valve in the body of the opening of the opening and closing of regulating the flow of medium, the medium pressure is reduced, at the same time with the aid of the role of the valve after pressure adjust the opening of open-close part, keep the valve after pressure within a certain range, under the condition of the inlet pressure changing, keep the outlet pressure within the scope of the set, protection appliances for production from then on.

200P Pressure reducing valve
Brass 200P pressure reducing valve

Model 200P pressure reducing valve is a direct acting type adjustable pressure reducing valve, using diaphragm type hydraulic operation, can be installed horizontally or vertically in water supply, fire fighting system or other clean water system.

Copyright © 2021 Tonglu Yongxin Valve Co.,Ltd.All Rights Reserved. Powered by dyyseo.com

IPv6 network supported

IPv6 network supported

top

Send A Message

Send A Message

    If you are interested in our valves and want to know more details,please leave a message here,we will reply you as soon as we can.