When the lower pressure of the valve stem is over the upper pressure and spring force, the check valve opens. When the upper pressure is equal to the lower pressure, the check valve closes.
A higher reverse pressure acts on the valve stem and causes the valve to close.
ZH4 Sanitary Check Valve has two types: ZH4-1 check valve adopting the clamp connection method, which is economical and practical and widely used in the food area. The ZH4-2 check valve is made up of a thickened valve body and two pieces of flange, which is easy to install and remove.
| Technical data | ||
| Material | Contact product parts | 304L/316L (1.4307/1.4404) Forged |
| non-contact product parts | 304(1.4301) | |
| Provide EN 10204 3.1B certificate | ||
| Seal material | standard | EPDM |
| option | NBR、FPM、Silicone | |
| Seal material All seal materials comply wit FDA 177.2800 | ||
| Temperature | Temperature | -20~+135℃(EPDM) |
| Sterilization temperature | 150℃(max20min) | |
| Pressure | Opening pressure | ≈0.08bar |
| Max working pressure | 10bar | |
| Surface treatment | Internal surface | Ra <= 0.8um |
| External surface | Ra <= 1.6um | |
| Connection | Connection standard | welded end: DIN 11850 series2 |
| welded end: INCH pipe standard | ||
| Connection standard | ||
|
|
A | B | C | D |
| 1/2” | 9.4 | 25.2 | 28.5 | 39.5 |
| 3/4” | 15.75 | 25.2 | 28.5 | 39.5 |
| 1” | 22.1 | 50.5 | 38 | 59 |
| 1 1/2” | 34.8 | 50.5 | 38 | 59 |
| 2” | 47.5 | 64 | 38 | 59 |
| 2 1/2” | 60.2 | 77.5 | 38 | 59 |
| 3” | 72.9 | 91 | 42 | 59 |
| 4” | 97.38 | 119 | 44 | 55 |
|
|
A | B | C | D |
| 1/2” | 9.4 | 12.7 | 28.5 | 39.5 |
| 3/4” | 15.75 | 19.05 | 28.5 | 39.5 |
| 1” | 22.1 | 25.4 | 38 | 59 |
| 1 1/2” | 34.8 | 38.1 | 38 | 59 |
| 2” | 47.5 | 50.8 | 38 | 59 |
| 2 1/2” | 60.2 | 63.5 | 38 | 59 |
| 3” | 72.9 | 76.2 | 42 | 59 |
| 4” | 97.38 | 101.6 | 44 | 55 |
Address
No. 373 Oufan Road, Dongtou District, Wenzhou City, Zhejiang Province, China.
Tel
