年表作成・共有サービス - pastport

https://www.zhengfengvalve.com/products/flow-control-valve/

This valve maintains a predetermined flow, limits excessive flow to a predetermined value, and reduces upstream pressure to downstream pressure. Even if the upstream pressure of the main valve changes, it will not affect the downstream flow.

Features of China Flow Control Valve

Convenient installation and use.

The control part has no complex electric sensing mechanism and is not prone to failure.

The setting is simple, and the adjustment function will be completed automatically after setting.

No manual operation or other power source is required.

Flow Control Valve Working Principle

The flow value in the pipeline is controlled by the change of the opening size of the main valve disc and can be stabilized at a set value. The size of the main disc switch and the opening is controlled by the size of the pilot valve. The media pressure is taken from the downstream side of the throttle plate plus the spring force and the pressure taken from the upstream side of the throttle plate acted on the lower part of the diaphragm respectively. When the flow rate and pressure on both sides of the throttle orifice plate change, the pressure acting on the lower part of the diaphragm Will no longer balance, the diaphragm deformation, the opening of the guide valve change, and the opening of the main valve will also change accordingly so that the flow in the main road will return to the original set value.
Installation and Commissioning of Flow Control Valve

A gate valve and a filter should be installed before the main valve, and a gate valve should be installed after the main valve for maintenance. The guide valve has been adjusted before delivery. If the set flow value is not suitable for the field requirements, the guide valve adjusting screw can be adjusted For specific use, please consult ZECO Valve Group.
Flow Control Valve Material and Standard
Size Range: 2-24
Pressure Rating : 10bar-25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2
PartMaterialStandard
BodyDuctile IronEN 1563/DIN 1693
BonnetDuctile IronEN 1563/DIN 1693
TrimStainless Steel 431EN10088-1/ASTM A959
SeatStainless Steel 431EN10088-1/ASTM A959
DiaphragmEPDM / NBRISO 4633
Pilot ValveStainless Steel 431EN10088-1/ASTM A959
For the materials options not listed, consult factory.
ZECO manufactures valves in more than 50 different alloys.

ZECO Valve Group is an experienced flow control valve supplier. We provide china valve, building water shut off valve, 2 inch flow control valve, constant flow control valve, etc. Contact us to know more about flow control valve installation and balancing valves flow control.