Lined Diaphragm Valves
Industrial Valve Solutions

FEP/PFA Lined Diaphragm Valves

Designed for applications involving chemical and corrosive media, FEP/PFA lined diaphragm valves feature a protective lining and construction options suited to demanding industrial service.

✓ FEP / PFA Lining
✓ Chemical / Corrosive Media
✓ Size: 1/2" to 8"
✓ Flanged End Connection
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Technical Specifications

Product design, dimensions, materials and operating details.

Design Standard API 600 / BS 1873
Design BS EN ISO 17292, ASME B16.34
Face-to-Face DIN 3202
Inspection & Testing API 598 / BS EN 12266 Part 1
Leakage Class Class VI
End Connection Flanged
Flange Rating Class 150#
Size Range 1/2" to 8" (15–200 mm)
Pressure Class PN 6
Temperature Range -50°C to 300°C for soft-seated valves
Media Chemical / Corrosive Media
Spark Test 15 kV DC to 40 kV DC
Body Materials CI, DI, SGI, WCB, CF8, CF8M, CF3M, SS 304L, Duplex, Hastelloy, Monel
Liner Materials FEP, PFA

Key Features

Key construction and performance characteristics.

Excellent corrosion and chemical resistance

Low-porosity FEP/PFA lining for reliable protection

Locked-in liner design prevents shrinkage and blowout

High sealing performance for demanding applications

Suitable for corrosive and abrasive media

Reliable operation under vacuum and high-pressure conditions

Durable construction for long service life

Spark-tested liner for enhanced safety and reliability

Need Technical Details?

Contact Forex Valves to request the technical datasheet for this product.

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Industrial Valve Solutions

Lined Diaphragm Valve Manufacturer in Ahmedabad, India

Lined diaphragm valves are used to control, regulate or isolate fluid flow in piping systems where the internal lining and diaphragm material must suit the process medium. The lining provides a protective barrier between the fluid and valve body, while the diaphragm separates the process medium from the operating mechanism.

Forex Valves is based in Ahmedabad, Gujarat, India. Selecting a lined diaphragm valve requires evaluation of chemical properties, operating temperature, pressure, lining compatibility and diaphragm material to determine suitability for the intended application.

Lined Diaphragm Valve Design and Function

A lined diaphragm valve generally consists of a valve body with a protective internal lining, a flexible diaphragm and an operating mechanism. During operation, the diaphragm moves against or away from the weir or seating area to regulate or stop the flow.

The diaphragm also isolates the process fluid from the valve's operating components. Suitability depends on the body design, lining material, diaphragm construction and service conditions.

01

Protective Internal Lining

The lining separates the process fluid from the valve body surface. Its compatibility must be verified for the chemical composition, concentration and service conditions.

02

Flexible Diaphragm

The diaphragm moves to regulate or stop flow and separates the process medium from the operating mechanism. Material selection is application-specific.

03

Operating Conditions

Body construction, lining, diaphragm design, pressure and temperature limits should be checked against the manufacturer's technical documentation.

Applications of Lined Diaphragm Valves

Lined diaphragm valves may be considered for industrial processes involving corrosive or chemically aggressive fluids, subject to material compatibility and the manufacturer's specifications.

01

Chemical Processing

Evaluate the process chemical, concentration, temperature and pressure before specifying a lined diaphragm valve.

02

Industrial Fluid Handling

Check whether the lining and diaphragm materials are compatible with the fluid and intended operating conditions.

03

Water and Wastewater

Confirm fluid characteristics, operating limits and required valve configuration for the treatment process.

04

Pharmaceutical Processes

Verify the material, construction and documentation requirements for the specific process before selecting a valve.

05

Specialty Process Systems

Application suitability depends on the medium, service conditions and the compatibility of all wetted materials.

06

Industrial Pipelines

Match valve size, end connections, pressure rating and operating requirements to the pipeline specification.

Application Suitability Must Be Verified

These are potential application areas, not a guarantee that a particular valve is suitable for every service. Confirm compatibility against the process medium, concentration, temperature, pressure and applicable product specifications.

Selecting a Lined Diaphragm Valve

Project engineers and procurement teams should verify the following information before specifying a lined diaphragm valve.

  • Process medium: Identify the fluid, chemical composition and concentration.
  • Operating temperature: Check the temperature limits of the lining and diaphragm.
  • Operating pressure: Confirm the required working pressure against rated limits.
  • Lining material: Verify compatibility with the fluid and service conditions.
  • Diaphragm material: Check chemical resistance, temperature limits and operating-cycle requirements.
  • End connections and size: Match the valve to the pipeline size and specified connection standard.
  • Operation and maintenance: Confirm the actuation method, maintenance access and replacement requirements.
  • Technical documentation: Review applicable specifications and manufacturer documentation.

Do Not Select by Pipe Size Alone

Nominal size alone does not establish suitability. Chemical compatibility, lining and diaphragm materials, operating pressure and temperature must all be considered before a valve is specified.

India and Gulf Projects

Lined Diaphragm Valves for India and Gulf Projects

Forex Valves is located in Ahmedabad, Gujarat, India, and can be contacted for lined diaphragm valve product and project enquiries. Buyers and engineering teams working on industrial projects should provide the technical requirements for review.

United Arab Emirates (UAE)
Saudi Arabia
Qatar
Oman
Kuwait
Bahrain

For projects in these markets, specify the process medium, required size, pressure, temperature, lining material and diaphragm requirements. Product configuration, technical compliance, availability and export arrangements should be confirmed directly with the supplier before procurement.

Technical Details to Include in a Valve Enquiry

Providing complete process information helps the supplier review the proposed valve configuration against the intended service.

Identify the Process Fluid

Provide the fluid name, chemical composition and concentration where applicable.

State Pressure and Temperature

Include the expected operating conditions and any relevant service limits.

Specify Lining and Diaphragm Needs

State known material requirements and request compatibility confirmation.

Confirm Size and Connections

Provide the nominal size and required end-connection standard.

Describe Operation and Maintenance

Include actuation preferences and any maintenance or diaphragm replacement requirements.

Review Product Documentation

Confirm the proposed configuration, operating limits and technical compliance before procurement.

Lined Diaphragm Valve Enquiries at Forex Valves

Forex Valves is based in Ahmedabad, Gujarat, India. Buyers can submit their process and technical requirements to confirm whether a suitable lined diaphragm valve configuration is available.

For an overview of related products, explore the Forex Valves product catalogue.

For project-specific requirements, submit an enquiry through the Forex Valves contact page.

Confirm material compatibility, operating limits, product availability and technical compliance against the relevant manufacturer documentation before ordering.

Frequently Asked Questions

What is a lined diaphragm valve?

A lined diaphragm valve has a protective internal lining and a flexible diaphragm used to control or isolate fluid flow. The lining and diaphragm materials must be suitable for the process medium and operating conditions.

Where are lined diaphragm valves used?

They may be used in chemical processing, industrial fluid handling, water and wastewater treatment, and other applications where a compatible lined valve design is required. Suitability depends on the fluid, concentration, temperature, pressure and specified materials.

How do I select the lining material?

Select the lining according to the process fluid, its concentration, operating temperature and pressure. Confirm chemical compatibility and service limits with the manufacturer before ordering.

Why is diaphragm material important?

The diaphragm contacts or separates the process medium according to the valve design and must meet the relevant chemical compatibility, temperature and operating-cycle requirements. Confirm the suitable material against the product documentation.

What details should I provide when requesting a quotation?

Provide the process medium and concentration, operating pressure and temperature, valve size, end connection, lining material requirements, diaphragm requirements and any applicable project standards.

Can I enquire about lined diaphragm valves for Gulf projects?

Project enquiries can be submitted to Forex Valves in Ahmedabad, India, for requirements in the UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain. Product availability, specifications and export arrangements require direct confirmation.