Sanitary Tank Bottom Diaphragm Valve
- Model:
- Place of Origin:
- Wenzhou, China
- Material:
- SS304, SS316L
- Packing:
- Suitable Packing for Sea/Air Transport
- Payment:
- T/T, L/C, Western Union
A sanitary tank bottom valve is installed at the lower outlet of a hygienic vessel to control discharge while limiting product retention and contamination risk. A pneumatic diaphragm control design provides repeatable flow adjustment when vessel emptying and controlled transfer need to operate together. SS304 and SS316L construction, DN25 to DN100 sizes, pressure up to 1.0 MPa, and temperatures from -10°C to 150°C support a range of sanitary process duties.
What a sanitary tank bottom valve does
A sanitary tank bottom valve provides controlled access to the vessel outlet while supporting drainability and clean process conditions. In a tank bottom diaphragm valve, the diaphragm separates the process chamber from the actuator area and closes the flow path without a conventional stem extending through the product zone. This structure suits hygienic fluid handling where low retention and cleanability are required.
How pneumatic positioning improves outlet control
A pneumatic actuator can move the diaphragm through a controlled range instead of limiting operation to open or closed states. With an IP6000 positioner, valve position can follow a control signal with position feedback, allowing outlet flow to be adjusted according to process requirements. This configuration suits controlled transfer, dosing, and steady vessel discharge where valve position affects downstream flow.
Selection points that affect process performance
| Design focus | Process effect | What to verify |
|---|---|---|
| Outlet geometry | Supports drainability and lower hold-up | Tank outlet layout and slope |
| Pneumatic actuation | Enables repeatable positioning | Actuator action and air supply |
| Position feedback | Improves position control | Signal and positioner compatibility |
| Wetted materials | Supports media and cleaning compatibility | Fluid chemistry and CIP or SIP cycle |
| Flow sizing | Controls pressure loss | Required flow, Cv and pressure drop |
A tank bottom diaphragm valve should be sized from actual process conditions rather than nominal pipe diameter alone. Required flow, pressure drop, Cv, actuator capability, diaphragm material, and cleaning cycle should be reviewed as one selection set. SS316L is commonly selected for sanitary wetted service, while diaphragm and seal materials should match the process medium and operating temperature.
FAQ
Can a sanitary tank bottom valve regulate flow?
Yes. A modulating pneumatic diaphragm design can regulate outlet flow when the actuator and positioner are matched to the required operating range.
Is a tank bottom diaphragm valve only used for draining?
No. It can also support controlled transfer, dosing, sampling arrangements, and other hygienic vessel outlet duties when the valve geometry and control setup match the process.
Why this configuration suits controlled sanitary discharge
A pneumatic diaphragm control valve combines compact construction, convenient disassembly, adjustable flow control, and low pressure-drop behavior. SS304 or SS316L wetted construction supports sanitary service, while the tank-bottom arrangement provides direct vessel outlet control. The positioner adds continuous control capability beyond basic shutoff, making this configuration suitable where hygienic discharge and stable flow regulation need to work together.
Product Description
| Product Name: | Sanitary Pneumatic Diaphragm Control Valve |
| Material: | SS304 or SS316L |
| Size: | 1"-4" or DN25-DN100 |
| Temperature: | -10~150 |
| Presure: | ≤1.0Mpa |
