Description
DKV 400X flow control valve is a multifunctional valve that uses a high-precision pilot method to control flow. It is suitable for distribution pipes where flow and pressure need to be controlled, keeping the predetermined flow unchanged and limiting excessive flow to a predetermined value. The upstream high pressure is appropriately reduced. Even if the pressure upstream of the main valve changes, it will not affect the flow downstream of the main valve. This valve changes the principle of using an orifice plate or purely mechanically reducing the flow area of the common throttle valve, and uses related pilot valves to minimize energy loss during the throttling process. In case of emergency, the 400XA flow control valve can completely cut off the flow to avoid losses. It has high control sensitivity, is safe and reliable, is easy to debug, and has a long service life.
Part Name | Material |
Valve Body | Stainless Steel, Cast Iron, Cast Steel, Steel, Ductile Iron |
Filter | Copper |
Regulator | Copper |
Valve Stem | Stainless Steel |
Diaphragm and Pressure Plate | Nitrile Rubber, Ductile Iron |
Upper Cover | Ductile Iron, Bronze |
Slow – closing Valve Plate | Stainless Steel |
Spring | Silicon – manganese Steel, Stainless Steel |
Large Valve Disk | Ductile Iron |
Valve Seat | Copper, Stainless Steel |
Diaphragm Seat | Cast Iron, Cast Steel, Steel, Ductile Iron |
Regulating Valve | Copper |
Filter | Copper |
Performance Specifications
Nominal Pressure (MPa) | Test Pressure (MPa) | Applicable Medium | Suitable Medium Temperature |
1 | 1.5 | Shell | Clean Water and Sewage without Impurities |
1.6 | 2.4 | Seal | ≤80°C |
2.5 | 4 | Clean Water and Sewage without Impurities | ≤80°C |
Outline and connecting measurememt

Nominal pressure (MPa) | 25 | 32 | 40 | 50 | 60 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
L | 160 | 180 | 203 | 203 | 216 | 241 | 292 | 300 | 356 | 457 | 495 | 540 | 686 | 762 | 864 | 914 | 1067 |
PN 10 | D | 115 | 135 | 145 | 160 | 180 | 195 | 215 | 245 | 280 | 385 | 390 | 440 | 500 | 585 | 615 | 670 | 780 |
D1 | 85 | 100 | 110 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 350 | 400 | 460 | 515 | 565 | 620 | 725 |
PN16 | D | 115 | 135 | 145 | 160 | 180 | 195 | 215 | 245 | 280 | 335 | 405 | 480 | 520 | 580 | 640 | 705 | 840 |
D1 | 85 | 100 | 110 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 | 470 | 525 | 585 | 650 | 770 |
PN 25 | D | 110 | 135 | 145 | 160 | 180 | 195 | 230 | 270 | 300 | 360 | 425 | 485 | 550 | 610 | 660 | 730 | 840 |
D1 | 85 | 100 | 110 | 125 | 145 | 160 | 190 | 220 | 250 | 310 | 370 | 430 | 490 | 550 | 600 | 660 | 770 |
H | 172 | 172 | 265 | 265 | 310 | 350 | 460 | 520 | 570 | 695 | 780 | 595 | 1025 | 1080 | 1080 | 1135 | 1270 |
H1 | 106 | 106 | 210 | 210 | 215 | 215 | 245 | 305 | 365 | 415 | 510 | 560 | 658 | 735 | 610 | 665 | 725 |