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E-mail
info@hefengvalve.com
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Phone
13968885379
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Address
No. 15 Fengjiang Road, Puzhou Street, Longwan District, Wenzhou City, Zhejiang Province
Hefeng Fluid Technology (Wenzhou) Co., Ltd
Working principle of sanitary diaphragm valve
Date: 2025-09-24Read: 14
Working principle of sanitary diaphragm valve:
The tight fit between the valve body and diaphragm provides valve body sealing and seat sealing, ensuring isolation between the internal and external environment of the pipeline, making this valve suitable for aseptic processes.
The opening and closing of the sanitary diaphragm valve by Hefeng Fluid Technology is achieved by the up and down movement of the valve stem. When the valve stem is in the upper position, the spherical diaphragm bends upwards to form a conductive state for the valve. When the valve stem moves from top to bottom, it drives the valve core to bend the diaphragm, forcing it to tightly adhere to the valve seat area or, thus closing the flow path of the pipeline fluid.
This valve can be operated manually or pneumatically, and can also be controlled through an intelligent controller.
metal material |
Components in contact with the product |
316L (1.4404) forged |
Components that do not come into contact with the product |
304(1.4301) |
|
sealing material |
standard configuration |
PTFE/EPDM composite membrane |
optional |
EPDM、Silicone、FPM |
|
temperature |
Continuous operating temperature |
-20~+135℃(PTFE/EPDM) |
Extinguish Jun temperature |
150℃(Max20min) |
|
pressure |
work pressure |
0~10bar |
Control the pressure of the gas source |
5~8bar |
|
surface treatment |
Internal surface treatment |
Ra ≤ 0.4 μ m (mirror polishing or electronic polishing) |
External surface treatment |
Shot peening treatment |
|
connect |
connection standard |
Welding end: DIN 11866 series 1 |
Welding end: DIN11866 series 3 | ||
Connection method: Welding thread. Install quickly flange | ||
optional |
intelligent controller |
24V DC |
1 solenoid valve | ||
position sensor |
24V DC |
|
2 NPN or PNP position sensors | ||
According to its structural characteristics, the sterile diaphragm valve is recommended to be installed at a 30 degree angle, which is beneficial for leaving no residue after valve cleaning and is less likely to cause liquid retention and bacterial growth inside the valve.
Structural form of sanitary diaphragm valve:
Various structural forms can be customized according to customer needs