Sanitary Diaphragm Valve Hygienic Stainless Steel Tank Bottom

A sanitary diaphragm valve uses a flexible membrane to shut off process flow while separating the wetted path from the actuator chamber. In a pneumatic configuration, compressed air moves the actuator to open or close the valve, supporting repeatable flow isolation in hygienic processing lines.

How Membrane Isolation Supports Clean Operation

A hygienic diaphragm valve closes when the diaphragm presses against the valve seat, blocking the flow path without relying on a conventional stem packing arrangement in contact with the medium. This separation can reduce product-contact crevices around the operating mechanism. Actual cleanability still depends on the body contour, mounting orientation, drainage, and the validated cleaning cycle.

The listed configuration uses an SS316L body with EPDM+PTFE or EPDM sealing options. Its stated operating range is 0–10 bar and −20°C to +120°C. These limits apply to the valve assembly, not automatically to every individual seal material.

Selection Checks for Installation

Matching the Actuator and Diaphragm

A stainless steel sanitary diaphragm valve can suit automated food, dairy, beverage, pharmaceutical, and chemical process lines when the body alloy and diaphragm compound match the medium. The pneumatic actuator controls diaphragm movement; the membrane provides shutoff and isolates the process liquid from the upper operating components.

Before integration, the control arrangement should be checked for air supply, normally closed or other required operating state, and any position feedback or control accessories. The clamp ferrules and gasket must also match the existing hygienic pipework.

A tank bottom diaphragm valve has a different body geometry designed around a vessel outlet. It should not be treated as interchangeable with an inline clamp valve without checking the tank connection and drainage path.

Confirming the Pneumatic Clamp Configuration

For the clamped pneumatic design, the final choice should match the required flow route, seal compatibility, control function, and stated operating limits.

Technical Data

Product Parameter

Product Pictures