best butterfly valve manufacturer india - Flowbiz

PFA/FEP Lined Butterfly Valves: The Ultimate Barrier Against Corrosion

The FlowBiz Lined Butterfly Valve is specifically designed for services where even high-grade stainless steel fails. By over-molding the disc and lining the entire body with high-performance fluoropolymers like PFA (Perfluoroalkoxy) or FEP (Fluorinated Ethylene Propylene), we ensure a "non-wetted" structural design.

Engineering Design & Component Isolation

The genius of the FlowBiz design lies in the separation of wetted and non-wetted parts:

  • Wetted Parts: Only the PFA/FEP over-molded disc and the liner come into contact with the media. These materials are virtually immune to chemical attack from acids, alkalis, and solvents.
  • Non-Wetted Parts: The valve body (Cast Iron/Ductile Iron), shaft, springs, and bearings are completely isolated behind the liner, preventing structural corrosion and extending the valve's lifecycle.
  • Integrated Gasket: The PFA liner extends over the face of the valve body, doubling as a built-in flange gasket, which reduces the number of potential leak paths.

Technical Specifications

FlowBiz utilizes a robust multi-material stack to ensure high-cycle reliability in corrosive environments:

Component

Material Specification

Body

Cast Iron, Ductile Iron, Carbon Steel, or Stainless Steel

Disc & Integral Shaft

AISI 304/316 with FEP/PFA Lining

Elastomer Backing

Silicon (Provides resilient energization to the liner)

Thrust Collar

PTFE

Thrust Washer

SS AISI 304

Lever Assembly

Carbon Steel (C.S.)

Core Advantages

  1. Total Chemical Resistance: Ideal for handling highly corrosive media where traditional alloys would corrode within weeks.
  2. Zero-Leak Stem Sealing: Featuring advanced safety packing and spring-loaded washers to maintain a constant seal pressure.
  3. Throttling Capability: While primarily used for On/Off service, the FlowBiz design is durable enough for flow regulation/throttling in corrosive lines.
  4. Lower Total Cost: While the initial investment is higher than standard valves, the elimination of downtime and replacement costs makes lined valves the most economical choice for aggressive chemicals.

Industrial Applications

FlowBiz PFA/FEP Lined Butterfly Valves are essential in:

  • Chemical Processing: Handling concentrated sulfuric acid, hydrochloric acid, and chlorine.
  • Pharmaceuticals: Managing high-purity reagents and active ingredients.
  • Desalination & Water Treatment: Resisting high-salinity and chemical dosing agents.
  • Pesticides & Fertilizers: Controlling aggressive chemical precursors.

FlowBiz Exports: Your Global Lined Valve Expert

As a leading Lined Butterfly Valve manufacturer in India, FlowBiz Exports delivers "Zero-Corrosion" technology to the world’s most critical industrial hubs:

  • Manufacturing Excellence: Based in Mumbai, serving Ahmedabad, Pune, and Vapi.
  • Global Reach: Trusted by engineers in Dubai, Turkey, Africa, Bangladesh, and Thailand.
  • Complete Range: FlowBiz also offers PFA Lined Ball Valves, Lined Check Valves, and Diaphragm Valves.

Is your facility facing frequent valve failures due to acid corrosion?

Upgrade to FlowBiz PFA/FEP Lined Butterfly Valves for a permanent, zero-corrosion solution. Contact our Mumbai technical team today for a material compatibility audit and a customized quote for your corrosive service.