Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer FD-9N type constant flow valve (for overflow limit / water supply)
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.
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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.
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