FD-9N type
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It is possible to supply an appropriate flow rate by limiting the flow rate so that it does not become excessive with water supply pipes, watering nozzles, various equipment and devices, etc. to large-scale water receiving tanks.

Major features

  • We have a lineup of abundant set flow rates.
  • The internal constant flow cartridge can be replaced and maintained.
  • Due to the elasticity of the original rubber, stable constant flow rate control is performed.

Water Supply Law Performance Standard Certification Registered Product (E-585) Pressure Pressure Performance Leaching Performance

specification

Product code FD9N-F □The symbol of the set flow rate is entered in □.
Valve type Constant flow valve
Use Water supply (overflow limit)
Nominal diameter 25-50 (1-2)
Applicable fluid Tap water
Fluid temperature 5-40 ℃Please contact us for fluid temperatures of 5 to 60 ° C. (It does not meet the performance standards of the Waterworks Law.) However, the tolerance of noise level and set flow rate is different.
Primary side applied pressure 1.0MPa or less
Operating differential pressure range 0.1-0.7MPa or 0.2-0.5MPaIt depends on the nominal diameter and the set flow rate. (Refer to page 99 of the general catalog for the set flow rate and set flow rate symbol.)
Set flow rate / symbol Tolerance 20-270 L / min: Within ± 20% of set flow rateFor the set flow rate and set flow rate symbol, refer to page 99 of the general catalog.
End connection JIS Rc screw
Mounting posture Horizontal / vertical freedom
Material body CAC
Material cartridge POM resin, EPDM
  • When installing this constant flow valve on the primary side of the constant water level valve for the purpose of limiting overflow, please note the following when selecting. The constant flow valve causes pressure loss when passing water. If the rising pipe is 3 m or more after the constant water level valve, select a set flow rate with a flow rate of 1 m / s or more. If the flow velocity is less than 1 m / s, please contact us.

Download materials

Download materials

Common to all product symbols

FD-9N Catalog

FD-9N Price List

FD-9N outline drawing

FD-9N Instruction Manual

FD9N-F □

FD9N-F reference diagram

Frequently Asked Questions and Explanations

Why do you need a constant flow valve?

For the purpose of flowing a constant flow rate for cooling water of equipment and applications such as weighing, and for housing equipment, distribute the water supply and hot water supply to each house in an appropriate amount (restrict that it is not overused by one house).

Can it be used for the purpose of suppressing changes in flow rate due to fluctuations in primary pressure?

It can be used for overflow limiting applications.

What is an orifice?

It is a pipeline with a reduced area. It is the throttle of the flow path when its length is relatively short compared to the cross-sectional dimension.

Inquiries about this product

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Products with different symbols depending on the product specifications are indicated by □.
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Notation on catalogs and websites

RD44N-F □

Contains characters that indicate pressure classification and options.

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