Aseptic Pneumatic Mixproof Shut Off Valve
- Model:
- Place of Origin:
- Wenzhou, China
- Material:
- SS316L
- Packing:
- Suitable Packing for Sea/Air Transport
- Quantity:
- 1000 units per Month
- Payment:
- T/T, L/C, Western Union
A mixproof valve isolates incompatible fluid streams passing through a common pipe intersection without cross-contamination. The mechanical architecture incorporates two independent sealing plugs creating an atmospheric vent chamber. If an elastomeric seal deteriorates, process media vents outward toward the exterior drain port, preventing product crossover during active production and sanitation runs.
Double Seat Architecture and Steam Barriers
Implementing a double seat mixproof valve allows concurrent routing of finished sterile batches and caustic wash solutions. Pneumatic actuators drive the internal stem while integrating steam barriers for aseptic line terminations.
Machined AISI 316L stainless steel bodies withstand cyclic thermal expansion and aggressive chemical washes containing sodium hydroxide and nitric acid solutions. Fully enclosed stem guides isolate actuator internals from fluid contact, prolonging operating life during severe sterilization sequences.
Process Isolation and Cavity Dynamics
The matrix illustrates functional fluid isolation across sanitary and steam sterilization routines:
| Operating State | Flow Path Configuration | Contamination Defense |
|---|---|---|
| Product Transfer | Independent routing along parallel conduits | Atmospheric cavity maintains physical fluid partition |
| Seat Sanitation | Chemical flushing via controlled plug retraction | External drain port vents rinse fluid outside |
| Thermal Sterilization | Saturated steam purge across barrier ports | Continuous condensate discharge prevents line intrusion |
| Primary Seal Rupture | Discharged fluid exits freely toward open drain | Zero pressure equalization between line headers |
Actuation Control and Dynamic Feedback
Proper mixproof valve operation depends on digital positioning units tracking exact plug stroke distances. Precision displacement feedback confirms seal seating during pulsation cleaning without creating hydraulic shock.
The internal flow geometry suppresses velocity surges, eliminating destructive water hammer across manifold lines. Calibrated return springs guarantee rapid shutoff seating if supply air drops below minimum threshold limits.
Manifold Integration and Seal Selection
Facilities adopting mix proof manifold configurations eliminate manual swing panels, reducing maintenance shutdowns. Selecting correct elastomeric compounds such as EPDM or fluoroelastomers prevents premature seal swelling under elevated steam temperatures.
Balanced plug profiles stabilize line pressures, ensuring reliable fluid containment across high-purity processing circuits. Precise port orientation accommodates diverse skid layouts, optimizing drainability without residual pocket accumulation.
Product Description
| Body Material: | SS316L |
| Seal Material: | PTFE |
| Size: | 1", 1.5", 2" |
| Working Pressure: | ≤0.8Mpa |
| Connection end: | Welded,clamped |
| Roughness: | Outside Ra≤0.6μm, Inner Ra≤0.4μm |
| Max. Temperature: | 150 degree C |
| Mpa Gas pipe connection: | G1/8" |
