Circuit valve, primary pressure control valve MD-20H type Water fall prevention valve (for water / hot water)
When the pump is stopped, the valve body closes quickly to prevent the water level in the return pipe from dropping.
Since no air pool is generated when the pump is started, noise and vibration are prevented.
Keeps the inside of the pipe at an appropriate pressure while the pump is operating.
- Where to use
- Air conditioning equipmentAir conditioning equipment
Major features
- An NBR disc is used for the valve body.
- It is responsive to pressure changes and the valve closes quickly when the pump is stopped.
specification
| Product code | MD20H-B □The symbol of the set pressure adjustment range is entered in □. |
|---|---|
| Valve type | Water fall prevention 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 to 0.35 MPa, H: 0.3 to 0.7 MPa Nominal diameter 100 or more L: 0.05 to 0.35 MPa, H: 0.3 to 0.5 MPa |
| Allowable leakage amount | None (visual pressure gauge) |
| 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 161 of the general catalog for selection of water fall prevention valves and page 156 for selection of nominal diameter.
Download materials
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.
Inquiries about this product
Please use this form for product questions and technical inquiries.
If you would like to contact us by phone, please contact VENN's sales office.
We will strictly manage the personal information of our customers based on our "Personal Information Protection Management Regulations" and will not use it for anything other than responding to inquiries and consultations without the consent of the customer.
Please check our privacy policy.
List of related products
Please cooperate with the questionnaire
We will use your opinions as a reference to make the website easier to understand and useful, so we ask for your cooperation.
Was this page helpful?
How easy was it to find the page you were looking for on this site?
How was the page easy to understand about this site?
Thank you for your cooperation
Added to comparison table View comparison table
Added to Favorites View Favorites
Added to Download BOX Download BOX
