Sanitary check valve, also known as "non-return valve", is designed for use in process piping installations to prevent reverse flow. VCN series is a spring check valve with different connection ends. A check valve opens when the pressure below the valve plug exceeds the pressure above the valve plug and the spring force. The valve close when pressure equalization has been achieved.
| Connections | Thread,Clamp,Weld |
| Material | SS304,SS316L |
| Operated | Manual, Pneumatic |
| Size | 1"-4",DN10-DN100 |
| Standard | 3A DIN SMS |
| Max.Pressure: | 0-10Bar |
| Working Temperature | VMQ:(-50~+180℃) EPDM：(-20~+135℃) FPM: (-30~+230℃) |
Operating Principle
The Valve opens when the pressure of the fluid exceeds the pressure exerted by the pump spring.When the two pressures are equalised, the valve closes. A stringer counter-pressure allows the valve to close.
Design and features
Casing/shaft:AISI 316l
Spring: AISI304
Seal:EPDM according to FDA177.2600
Surface finishing: RA＜0.8μm
