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ZH4 Sanitary check valve
Non-return valve ZH4 is designed for use in stainless steel pipe installations to prevent reverse flow.
- Overview
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Detailed Description
When the lower pressure of valve stem over the upper pressure and spring force, check valve opens. When the upper pressure equal to the lower pressure, check valve closes.
A higher reverse pressure acts on the valve stem and causes valve to close.
ZH4 check valve has two type: ZH4-1 check valve adopting clamp connection method, which is economical and practical, and widely used in food area. ZH4-2 check valve is made up of thicken valve body and two pieces of flange, which is easy to install and remove.
Parameter
| 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 | ||
Clamp series
| 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 |
Welded series
| 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 |
