Silencer, vacuum adjustment valve VD-1H type vacuum adjustment valve
specification
| Product code | VD1H-F □The symbol of the set pressure range is entered in □. | VD1H-D □The symbol of the set pressure range is entered in □. |
|---|---|---|
| Valve type | Vacuum regulating valve | Vacuum regulating valve |
| Nominal diameter | 15-50 (1/2-2) | 15-50 (1/2-2) |
| Applicable fluid | Steam / air | Steam / air |
| Fluid temperature | 200 ℃ or less | 200 ℃ or less |
| Applicable pressure | 1.0MPa or less | 1.0MPa or less |
| Set pressure range | 1: -0.5 to -22kPa, 2: -22 to -49kPa 3: -49--76kPa, 4: -76-82kPa | 1: -0.5 to -22kPa, 2: -22 to -49kPa 3: -49--76kPa, 4: -76-82kPa |
| End connection | JIS R screw | JIS R screw |
| Material | C3604 or CAC406 (Metal Touch) | SUS (metal touch) |
| Mounting posture | Vertical mounting with the entrance side down | Vertical mounting with the entrance side down |
- It cannot be used for maintaining positive fluid pressure.
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Frequently Asked Questions and Explanations
Why do you need a silencer?
A silencer is used when steam is blown into water to make hot water, and noise and vibration due to steam inflow are reduced. If the silencer is not used, extreme noise and vibration will occur.
What is the sound limit temperature of the silencer?
The sound limit temperature is the maximum temperature of hot water that can maintain the function of the silencer.
What causes noise when steam is blown into water? Also, what principle does the silencer suppress the noise?
When steam is blown directly into water, the steam condenses and creates a cavity, and when the surrounding hot water flows toward the cavity and collides, a large impact and noise are generated. The silencer emits steam from a small nozzle and smoothes the mixing with water to reduce noise.
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