PFA/FEP Diaphragm Valves
PFA/FEP Lined Diaphragm Valves are corrosion-resistant flow control valves designed for safe and leak-proof handling of aggressive and toxic chemicals in process industries.
- Type
- Weir-Type Diaphragm Valve
- Size Range
- 15 mm to 200 mm (½” to 8”)
- Lining Material
- PFA / FEP (3 mm min. thickness)
- Body Material
- Cast Iron / Ductile Iron / WCB / SS304 / SS316
- Manufacturer since 1984
- ISO 14001 & 45001
- Application-led selection
Overview
About the PFA/FEP Diaphragm Valves
Our PFA/FEP diaphragm valves are designed to provide exceptional performance in handling aggressive chemicals, high temperatures, and demanding industrial conditions. Constructed from Perfluoroalkoxy (PFA) and Fluorinated Ethylene Propylene (FEP), these valves offer superior chemical resistance, durability, and leak-proof operation, making them ideal for chemical, pharmaceutical, water treatment, and semiconductor industries.
Key Features & Benefits
Premium Materials: Built with PFA and FEP for excellent resistance against acids, alkalis, and solvents.
High-Temperature Tolerance: Operates reliably in environments up to 260°C.
Leak-Proof Diaphragm Design: Ensures tight shutoff and prevents contamination.
Versatile Actuation: Available in manual, electric, pneumatic, and hydraulic options.
Corrosion Resistance: Perfect for aggressive chemical handling with reduced maintenance needs.
FDA Compliant: Suitable for food and pharmaceutical applications.
Easy Maintenance: Features external adjustment bolts for simple in-line servicing.
Applications
These PFA/FEP diaphragm valves are ideal for:
Chemical Processing: Safe handling of corrosive chemicals.
Pharmaceutical Production: Ensuring process purity and compliance.
Water Treatment: Effective chemical control in purification systems.
Semiconductor Manufacturing: Managing ultrapure water and chemicals.
Food & Beverage Industry: Maintaining hygiene and safety in processing lines.
Why Choose Our PFA/FEP Diaphragm Valve?
Outstanding Chemical Resistance: Handles a wide range of corrosive media.
High-Temperature Performance: Reliable under extreme heat conditions.
Leak-Proof Operation: Prevents contamination with a secure diaphragm seal.
Flexible Actuation Options: Fits manual, electric, pneumatic, or hydraulic systems.
FDA Approved: Suitable for applications requiring strict hygiene.
Low Maintenance: Easy servicing reduces downtime and operational costs.
Upgrade your fluid control systems with our PFA/FEP diaphragm valves. Contact us today for specifications, customized solutions, and a free quote tailored to your project.
Engineering Data
Technical Specifications
| Type | Weir-Type Diaphragm Valve |
|---|---|
| Size Range | 15 mm to 200 mm (½” to 8”) |
| Lining Material | PFA / FEP (3 mm min. thickness) |
| Body Material | Cast Iron / Ductile Iron / WCB / SS304 / SS316 |
| Diaphragm Material | PTFE (with EPDM/Back Support) |
| Operation | Handwheel / Pneumatic Actuated |
| Temperature Range | Up to 150°C |
| Pressure Rating | PN10 / PN16 / ANSI 150# |
| End Connections | Flanged as per ANSI / DIN standards |
Construction
Materials of Construction
Body
Cast Iron / Ductile Iron / WCB / SS316
Lining
PFA / FEP (minimum 3 mm)
Diaphragm
PTFE (with EPDM or Viton backing)
Bonnet
Cast Iron / Ductile Iron / SS
Fasteners
SS304 / SS316
Handwheel
Polypropylene / Coated Steel
Use Cases
Industry Applications
- Chemical manufacturing and dosing systems
- Acid and alkali transfer lines
- Water and wastewater treatment plants
- Pharmaceuticals and biotech processes
- Pulp and paper chemical processing
- Food and beverage clean-in-place systems
- Fertilizer and petrochemical plants
Selection Guide
Lined vs. Metal Valves
-
1
Choose lined valves when the process fluid is corrosive and must be isolated from the metal body.
-
2
Choose metal valves when temperature, pressure, abrasion, or mechanical strength is the main driver.
-
3
Correct selection depends on chemical compatibility, pressure class, temperature, and actuation needs.
For selection, share flow rate, discharge pressure or head, viscosity, temperature, solids content and installation conditions — our engineers will recommend the right valves configuration.
Questions
Frequently Asked Questions
What is PFA/FEP Diaphragm Valves used for?
PFA/FEP Diaphragm Valves is used for industrial liquid handling where the selected valves configuration matches flow, pressure, material compatibility, and site duty requirements.
How do I select the right valves model?
Share the fluid name, flow rate, head or pressure, viscosity, temperature, solids content, installation details, and operating hours so the team can recommend a suitable model.
Can Sando support industrial valves for chemical process lines?
Yes. Sando Rotary can review the duty conditions and suggest suitable products, materials, elastomers, and accessories for industrial valves for chemical process lines.
Do you provide technical specifications and application guidance?
Yes. Specifications, catalogs, material guidance, performance details, and application support can be shared for procurement and engineering review.
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