Stainless Steel Sanitary Diaphragm Valve Zero Dead Leg
- Model:
- Brand:
- J&O
- Material:
- SS316L
- Connection:
- Flanged
- Gasket:
- EPDM+PTFE/EPDM
- Working Temperature:
- -20°~+120°
- Working Pressure:
- 0-10Bar
- Operation:
- Pneumatic
- Payment:
- T/T, L/C, Western Union
A pneumatic sanitary diaphragm valve with a flanged body and positioner combines automated diaphragm actuation with controlled valve travel. The listed configuration uses SS316L stainless steel, an EPDM+PTFE/EPDM sealing assembly, and a stated working range of 0–10 bar and −20°C to +120°C. Selection depends on process fluid compatibility, control requirements, flange dimensions, and operating conditions.
How Positioner Feedback Controls Diaphragm Travel
The pneumatic actuator moves the diaphragm to open, close, or regulate the flow path. A positioner coordinates actuator movement according to the selected control arrangement, supporting repeatable valve positioning during automated process sequences. The exact input signal, feedback method, and positioning accuracy depend on the supplied control unit.
A stainless steel sanitary diaphragm valve separates the process medium from the actuator through its flexible diaphragm. This arrangement limits direct exposure of operating components to the fluid and supports hygienic process control.
Matching the Valve Body to Actual Process Conditions
| Selection Factor | Technical Check |
|---|---|
| Body material | Confirm SS316L compatibility with the process medium. |
| Diaphragm compound | Verify EPDM+PTFE/EPDM compatibility with fluid and cleaning chemicals. |
| Flange interface | Match the flange standard, nominal diameter, and mating dimensions. |
| Control signal | Confirm the positioner input, actuator interface, and feedback requirements. |
| Operating limits | Verify pressure and temperature ratings for the selected configuration. |
The published specifications list sizes from 1–4 inches or DN25–DN100. The stated working pressure is 0–10 bar, with a temperature range of −20°C to +120°C. These limits should be checked against the exact size, diaphragm assembly, and process conditions before installation.
Drainage Geometry and Low-Retention Flow Paths
Hygienic diaphragm valves are selected partly for their separation of the process medium from the operating mechanism and their potential for cleanable internal surfaces. Actual drainage depends on chamber geometry, surface finish, mounting orientation, and connected pipework.
A zero dead leg diaphragm valve requires suitable internal geometry and installation conditions that minimize stagnant product volumes. A flanged connection or pneumatic positioner alone does not establish zero-dead-leg performance. Sectional drawings and application-specific verification should confirm whether the configuration meets the required hygiene criteria.
Maintaining Control and Seal Integrity
Cleaning-in-place (CIP) and sterilization-in-place (SIP) procedures must remain within the limits of the diaphragm and other wetted materials. Routine checks should cover diaphragm condition, flange-joint integrity, actuator response, and positioner calibration.
Matching maintenance intervals to operating frequency, temperature exposure, and cleaning cycles supports reliable sealing and repeatable valve movement. Verified technical drawings, material records, and control-unit specifications also provide a sound basis for final configuration approval.
Technical Data
| Valve Body Material: | SS316L |
| Seal Material: | EPDM+PTFE/ EPDM |
| Mex working pressure: | 10Bar |
| Max. Working Temperature: | 120 degree C |
| Availably size: | 1"-4", DN25-DN100 |
| Availably connection: | Flanged |
| Availably standard: | 3A/DIN/SMS/RJT/ISO/IDF |
| Operated: | Pneumatic |
Product Parameter
Product Pictures
