Sanitary Threaded Spring Check Valve
Application of sanitary check valve
When the pressure on the lower part of the valve stem exceeds the pressure on the upper part of the valve stem and the spring force, the check valve opens.
When the pressure on the upper and lower parts of the valve stem is balanced, the valve will close.
A higher reverse pressure acts on the valve stem to close it.
There are two types of check valves:
The check valve adopts a clamp-type connection method, which is economical and applicable, and is widely used in the food industry.
The check valve is composed of a thickened valve body and a two-piece method, and is characterized by easy installation and disassembly.
Working principle of sanitary check valve
Check valves are used in stainless steel piping systems to prevent fluid backflow.
| Metal material | Parts in contact with the product | 304L/316L(1.4307/1.4404) Forged |
| Parts not in contact with the product | 304(1.4301) | |
| Sealing material | Standard | EPDM |
| Optional | FPM, NBR/PTFE, Silicone | |
| Imported sealing materials are used, all sealing materials comply with FDA 177.2600 | ||
| temperature | Continuous operating temperature | -20~+135℃(EPDM) |
| Sterilization temperature | 150℃(max 20min) | |
| pressure | Opening pressure | ≈0.08bar |
| Maximum work pressure | 10bar | |
| Surface treatment | Internal surface treatment | Ra≤0.8μm |
| External surface treatment | Ra≤1.6μm | |
| connect | Connection Standards | Welding end: DIN 11850 Series 2 |
| Welding end: Inch pipe diameter standard | ||
| Connection method: welding, quick-release, thread, flange | ||
