Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer FD-6N type constant flow valve (for door-to-door water supply / hot water supply)
* Please use FD-11N, 12 type (page 101) when installing in the central hot water supply facility (hot water circulation method).
Major features
- The mounting posture is free.
- Wide operating differential pressure range.
- Since it has a simple structure that utilizes the elasticity of rubber, a stable flow rate can be maintained.
Water Supply Law Performance Standard Certification Registered Product (E-243) Pressure Pressure Performance Leaching Performance
specification
| Product code | FD6N-F □The symbol of the set flow rate is entered in □. |
|---|---|
| Valve type | Constant flow valve |
| Nominal diameter | 15/20 (1/2/3/4) |
| Applicable fluid | Tap water / hot water |
| Fluid temperature | 5 to 90 ° C |
| Primary side applied pressure | 1.0MPa or less |
| Operating differential pressure range | For a nominal diameter of 15 4-6L / min: 0.03-0.3MPa 7.5 to 15L / min: 0.03 to 0.5MPa When the nominal diameter is 20 9 to 15 L / min: 0.03 to 0.5 MPa 20-40L / min: 0.035-0.5MPa |
| Set flow rate / symbol | ・ For nominal diameter 15 04: 4L / min, 06: 6L / min, 75: 7.5L / min, 09: 9L / min, 12: 12L / min, 15: 15L / min ・ For nominal diameter 20 09: 9L / min, 12: 12L / min, 15: 15L / min, 20: 20L / min, 25: 25L / min, 30:30 L / min, 35: 35L / min, 40: 40L / min |
| End connection | For a nominal diameter of 15 Entrance: JIS Rc 1/2 screw Exit: JIS R 1/2 screw When the nominal diameter is 20 Entrance: JIS R c3 / 4 screw Exit: JIS R 3/4 screw |
| Mounting posture | Horizontal / vertical freedom |
| Material body | CAC406 |
| Material Orifice | EPDM |
- If the desired flow rate is in the middle of the set flow rate, select the one with the larger set flow rate at room temperature and the one with the smaller flow rate for hot water.
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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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