Noiseless Heater/Vacuum Relief Valve
VB-7
* VB-7 protects equipment and piping from damage caused by a vacuum conditions.
* Stable performance without chattering and hunting.
Specifications
| Features | Vacuum relief valve | |
|---|---|---|
| Specifications | Product type | Vacuum relief valve |
| Nominal size | 15A (1/2") - 50A (2") | |
| Application | Steam, air | |
| End connection | JIS R screwed | |
| Max. pressure | 1.0 MPa | |
| Max. temperature | 200 degree(C) | |
| Working pressure | -48 to -0.5kPa * | |
| Material | Body | Brass |
| Valve | Bronze | |
| Valve seat | Brass | |
Remarks
* Regulating pressure range
A: -0.5 to -21 kPa
B: -21 to -48 kPa
C: -48 to -81 kPa
Dimensions and Weights
| Size | H (mm) | Weight (kg) |
|---|---|---|
| 15A(1/2) | 100 | 0.5 |
| 20A(3/4) | 100 | 0.5 |
| 25A(1) | 112.5 | 0.75 |
| 32A(1 1/4) | 113.5 | 1.05 |
| 40A(1 1/2) | 130 | 1.45 |
| 50A(2) | 165.5 | 2.45 |
About flow rate
Selection data：
Dimensional drawing
