Circuit valve, primary pressure control valve FD-2H type differential pressure control valve (for water / hot water)
In the case of the open circuit method, the primary pressure regulating valve is used for the relief valve of the pump, but in the case of the closed circuit method, the pump must be operated at a constant flow rate regardless of the load, so the differential pressure Use a regulating valve.
- Where to use
- Air conditioning equipmentAir conditioning equipment
Major features
- Used as a pump relief valve in a closed circuit.
- An NBR disc is used for the valve body.
specification
| Product code | FD2H-B □The symbol of the set pressure adjustment range is entered in □. |
|---|---|
| Valve type | Differential pressure control valve |
| Nominal diameter | 15-150 (1/2-6) |
| Applicable fluid | Hot water |
| Fluid temperature | 5 to 90 ° C |
| Set pressure adjustment range | Nominal diameter 80 or less L: 0.05-0.35MPa, H: 0.3-0.7MPa Nominal diameter 100 or more L: 0.05-0.35MPa, H: 0.3-0.5MPa |
| End connection | JIS 10K RF flange |
| Mounting posture | Upright mounting on horizontal piping |
| Material body | FC |
| Material parts | CAC406, SUS |
| Material Diaphragm disc | NBR |
| Painted inner surface | Anti-corrosion oil |
| Painted outer surface | Metallic blue, cap: red |
- Refer to page 160 of the general catalog for selection of differential pressure control valve and page 156 for selection of nominal diameter.
- Please contact us for a pressure gauge with a connection hole for mounting the pressure gauge.
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Frequently Asked Questions and Explanations
What is the purpose of the primary pressure control valve installed on the outlet side of the pump?
It is used to prevent overheating due to shutoff operation of the pump and to keep the pump discharge pressure constant.
What is a back pressure valve?
Refers to the primary pressure control valve. A regulating valve that discharges fluid in response to changes in the force on the primary side in order to maintain the fluid pressure on the primary side at a certain constant pressure.
What is the purpose of the water fall prevention valve?
Please check the details.
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