PFA Diapharagm Valve
KINGMAN sanitary lined tri-clamp diaphragm valve is a manual hygienic shut-off valve specially developed for corrosive fluid pipelines. It adopts 304 or 316L stainless steel as valve body material. Customers can select PTFE lining or PFA lining for all medium-contact surfaces, matched with PTFE diaphragm. The valve is equipped with sanitary tri-clamp connections, featuring weir-type no-dead-space flow channel and fully isolated medium structure. PTFE lining offers comprehensive corrosion resistance and good cost performance. PFA lining delivers ultra-smooth inner surface and superior high-temperature performance. Both options support CIP/SIP on-site cleaning and sterilization. It is widely used in pharmaceutical, food, fine chemical, new energy and environmental protection industries to control the on-off of strong acid, strong alkali and corrosive media.
Specifications
| Parameter | Value |
|---|---|
| Product Name | PFA Lined Valves |
| Product Type | PFA Lined Ball Valve / PFA Lined Diapharagm Valve / PFA Lined butterfly valve |
| Material | 304/316L+PFA,304/316L+FEP,304/316L+PTFE |
| Sizes | 1“~4” |
| Connection Standard | 3A / DIN / ISO / BPE |
| Connection Type | Clamp / Flange Non-standard products can be customized in accordance with customer requirements. |
Features
- Sanitary tri-clamp quick connection structure. No welding needed on site. Assembly and disassembly are convenient and fast. It has strong interchangeability and can perfectly match standard sanitary tri-clamp fittings, easy for pipeline modification, equipment maintenance and diaphragm replacement.
- Optional lining for all wetted surfaces: PTFE or PFA. PTFE can resist strong acid, strong alkali, oxidizing agents and most corrosive chemical fluids with good cost performance. PFA has ultra-smooth inner wall, outstanding high-temperature resistance and non-stick property, suitable for high-temperature, high-purity and strict CIP/SIP working conditions. Both lining materials isolate corrosive fluid and protect stainless steel valve body from chemical erosion.
- Weir-type no-dead-space flow channel. Smooth weir structure avoids medium stagnation and residue, prevents material buildup. It fully complies with CIP/SIP on-site cleaning and sterilization requirements for hygienic and high-purity process working conditions.
- Complete isolation between medium and actuator. The PTFE diaphragm separates fluid medium from valve stem and internal transmission parts. It prevents medium leakage, and also avoids metal wear debris mixing into process medium, effectively preventing secondary pollution.
- Manual handwheel operation with controllable stroke. Rotate the handwheel to precisely adjust the compression of the PTFE diaphragm. Soft contact sealing achieves bubble-tight shut-off. Wearing parts are few, inspection and maintenance are simple.
- Integrated lining molding process. The PTFE or PFA liner is tightly bonded with stainless steel substrate. Under respective rated temperature and pressure working conditions, it can effectively prevent lining peeling, bubbling and falling off.
Working Principle
This sanitary lined tri-clamp diaphragm valve adopts weir-type soft sealing structure. Rotating the handwheel drives the internal screw lifting mechanism to control the lifting and pressing of the PTFE diaphragm. When the handwheel is turned counter-clockwise to open, the transmission assembly moves upward and lifts the PTFE diaphragm away from the valve body lined weir surface. The flow channel is opened, and corrosive medium flows smoothly through the PTFE or PFA lined inner cavity of the sanitary lined diaphragm valve. When the handwheel is rotated clockwise to close, the screw mechanism presses downwards, forcing the flexible PTFE diaphragm to closely fit the valve body lined weir sealing surface. The diaphragm deforms to fully block the flow passage, cutting off medium circulation and achieving bubble-tight zero leakage isolation of corrosive fluid.
Why Choose KINGMAN
100% Final Inspection
Every finished PFA/PTFE lined butterfly valve passes final inspection before shipment, reducing receiving risk on corrosive-service orders.
Stable Valve Supply
Large-scale CNC machining supports repeat body and connection dimensions when lined butterfly valves move from qualification into ongoing purchasing.
Samples Before Bulk Orders
Buyers can begin with samples or small trial quantities before adding a new lined-valve specification to regular project or distributor orders.
