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Rate-of-Flow Control Valves

Features

400X Rate-of-Flow Control Valves is uses for its high accuracy pilot operated flow control and is suitable for flow and pressure control of the pipeline to keep the flow preset unchanged, limit an extra-big flow at the preset value and properly lower the high pressure on the upstream, the flow at the downstream will not be affected by the pressure changing of the main valve at the upstream. It changes the principle of a throttle valve to reduce the basin area purely mechanically or by way of using orifices and utilizing the related pilot valve to reduce the energy loss during throttling to the utmost extent. And it features by sensitive control, safety, reliability, easy debugging and long duration.
400X Rate-of-Flow Control Valves is a kind of multifunctional valve, using advanced pilot method to control flow rate of fluid. It is used in the pipeline where flow rate and pressure need to keep stable and keep the flow rate stable and limit the over large flow rate to the preset flow rate in the downstream do not change. This kind of is different general throttle valve that reduces flow area to control flow rate, it uses related pilot valve is different general throttle valve that reduce flow area to control flow rate, it uses related pilot valve to reduce energy loss when throttling. In emergency vt-400X flow control valve can shut off the fluid and avoid loss. Its sensibility is very high and it is very safe and reliable and it's life is very long and it is very easy to maintain.

Rate-of-Flow Control Valves
Rate-of-Flow Control Valves

1. Small Ball Valve 2. Pilot Valve 3. Flow Controller 4. Needle Valve

Technical Parameters

Nominal Pressure: 1.0, 1.6, 2.5MPa
Shell test pressure: 1.5, 2.4, 3.75MPa
Sealed test pressure : 1.1, 1.76, 2.75MPa
Suitable temperature: 80
Suitable medium: water, Sewage

Materials

Materials: Rate-of-Flow Control Valves
Serial No. Part Material
1 Little Ball Valve  
2 Pilot Valve  
3 Flow Adjustor  
4 Needle Valve  
5 Seat Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
6 Stem Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
7 Diaphragm Rubber
8 Cover Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
9 Spring Spring Steel
10 Body Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)

Dimensions

DNmm 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500
L 180 180 180 203 203 235 285 360 400 455 585 650 800 860 915 980 1075
PN10 D 105 115 135 145 160 180 195 215 245 280 335 390 440 500 565 615 670
D1 75 85 100 110 125 145 160 180 210 240 295 350 400 460 515 565 620
PN16 D 105 115 135 145 160 180 195 215 245 280 335 405 460 520 580 640 705
D1 75 85 100 110 125 145 160 180 210 240 295 355 410 470 525 585 650
PN25 D 105 110 135 145 160 180 195 230 270 300 360 425 485 550 610 660 730
D1 75 85 100 110 125 145 160 190 220 250 310 370 430 490 550 600 660
H 342 342 342 395 395 405 430 510 560 585 675 730 760 840 910 1030 1135
H1 247 247 247 278 278 298 313 350 365 420 450 470 490 526 570 610 665

Typical Installation

Typical Installation of Rate-of-Flow Control Valves