• Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating

Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating

The Wafer Butterfly Valve with Nylon 11 Coated Disc combines a compact wafer body, a corrosion-resistant epoxy coated body, and a smooth Nylon 11 coated disc for reliable quarter-turn isolation and flow control. The valve can be configured with NSF/ANSI 61 certified wetted materials and coatings for potable water service, making it suitable for drinking water treatment, water distribution, wastewater, HVAC, and industrial water systems.
Size
DN40-DN1200
Flange
PN6/PN10/PN16/150LB/10K/Table D /Table E
Design
EN593/API609/BS5155/ISO5211/EN1092
Mounting Flange
ISO 5211
Testing Standard
API598 ISO5208 EN12266-1
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Wafer Butterfly Valve Nylon 11 Coated Disc NSF61 Certification Epoxy Coating
  • Description

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  • Product                   Wafer Butterfly Valve
  • Disc Coating            Nylon 11
  • Body Coating         Epoxy
  • Body Style              Wafer
  • Pressure Rating    To be confirmed according to project requirements
  • Size Range            DN40-DN1200
  • Seat Options       EPDM / NBR / High Temperature EPDM / FKM / PTFE
  • Actuation            Lever / Gear / Electric / Pneumatic


Product Introduction
  • A wafer butterfly valve is a short-face-to-face, quarter-turn valve installed between two standard pipe flanges. Its compact body reduces weight and installed length, making it an economical choice for isolation and flow control in water, wastewater, HVAC, and industrial piping systems.
  • This product is configured with a Nylon 11 coated disc and an epoxy coated body. The Nylon 11 layer protects the disc surface from corrosion, chemical attack, and mechanical wear while providing a smooth surface that reduces friction during operation. The epoxy body coating provides corrosion protection for the valve body in water and general industrial environments.
  • Drinking water configuration: For potable water projects, the valve can be supplied with NSF/ANSI 61 certified wetted materials and coatings. Certification documentation is provided according to the selected size, material, and coating specification.Nylon 11 Coated Disc

Nylon 11, also known as polyamide 11, is a thermoplastic coating widely used on butterfly valve discs in water and industrial service. It provides a smooth, non-porous surface with a combination of properties that benefits valve performance and service life:
Corrosion resistance: isolates the metal disc from the process fluid.
Abrasion resistance: resists surface wear from suspended solids and frequent operation.
Low friction: supports smoother opening and closing and can reduce operating torque in many applications.
Chemical resistance: suitable for water, wastewater, seawater, and selected industrial fluids depending on concentration and temperature.
Impact resistance: resists mechanical damage during installation and service better than some brittle coatings.
The exact coating thickness, substrate preparation, application process, and inspection requirements should be confirmed by Laux Valve according to the valve size and project specification.
NSF61 Certification and Epoxy Coating
NSF/ANSI 61 is the health effects standard for drinking water system components. When a valve is supplied for potable water service, the wetted materials and coatings must be selected and certified to meet the applicable extraction limits for the intended use.
For this product, Laux Valve can configure the wetted components with NSF/ANSI 61 certified materials and provide supporting certification documents. The body epoxy coating should also be selected from an approved coating system when drinking water contact is required.
Certification note: NSF/ANSI 61 approval is product, material, and configuration specific. Always confirm that the certificate covers the selected body material, disc coating, seat material, shaft material, and size before procurement.

Key Features

01 Nylon 11 Coated Disc

Smooth, corrosion-resistant, and abrasion-resistant disc surface for water and industrial service.

02 Epoxy Coated Body

Corrosion-resistant body protection for longer service life in water and general industrial environments.

03 NSF/ANSI 61 Available

Configurable with certified wetted materials and coatings for drinking water applications.

04 Compact Wafer Design

Lightweight, short-face-to-face body for space-saving installation between standard pipe flanges.


  • Product Specifications
  • The following table provides a project-oriented specification overview. Exact dimensions, pressure ratings, flange standards, and performance values must be confirmed by the Laux Valve engineering team according to the selected size, material, and application.
Item
Specification
Product Wafer Butterfly Valve
Body Style Wafer
Disc Coating Nylon 11
Body Coating Epoxy
Certification NSF/ANSI 61 available according to selected configuration
Pressure Rating To be confirmed according to project requirements
Nominal Size To be confirmed according to project requirements
Face-to-Face Available upon request
Flange Drilling Available upon request
Temperature Range Dependent on selected seat material and coating system
Standards To be confirmed according to project requirements
Leakage Class To be confirmed according to project requirements
Mounting ISO 5211 to be confirmed according to project requirements
  • Material Options
  • Material selection depends on the operating medium, temperature, pressure, corrosion conditions, and application requirements. Laux Valve can configure the valve to match the project specification.
Component Available Material Options
Body DI, WCB, CF8, CF8M, Al-Bronze
Disc Plated Ductile Iron, CF8, CF8M, Duplex, Bronze, Aluminum Bronze, Nylon Coated, PTFE Lined
Shaft SS420, SS316, 17-4PH, Duplex
Seat EPDM, NBR, High Temperature EPDM, FKM, PTFE
  • Material recommendation: Do not select materials based only on the valve body. The seat, disc, disc coating, shaft, and body coating must all be compatible with the actual fluid, temperature, pressure, and maintenance conditions. Contact Laux Valve for a technical material recommendation.
  • Applications
  • Drinking Water Treatment and Distribution
  • Water Supply
  • Wastewater
  • HVAC
  • Industrial Water
  • Large Diameter Pipeline Systems
  • Actuation Options
Actuator Typical Use
Lever Handle Manual operation for smaller sizes and lower torque applications
Gear Operator Manual operation for larger sizes or higher torque requirements
Electric Actuator Remote or automated on-off and modulating service
Pneumatic Actuator Fast on-off service and automated process control
  • ISO 5211 mounting can be confirmed according to the selected valve size and project requirements.
  • Nylon 11 Coating vs Other Disc Protection Options
Disc Protection Typical Characteristics
Nylon 11 Coated Disc Good corrosion, abrasion, impact, and chemical resistance with low friction and a smooth surface
Epoxy Coated Disc Cost-effective corrosion protection for many water and wastewater applications
Nickel Plated Disc Hard metallic surface with good wear and corrosion resistance in selected services
Stainless Steel Disc Solid corrosion-resistant material without a coating layer
PTFE Lined Disc Broad chemical resistance for aggressive acids, alkalis, and solvents
  • Selection guidance: The best disc protection depends on the process fluid, temperature, solids content, operating frequency, and required service life. Laux Valve can recommend the most suitable option after reviewing the full project conditions.



  •             NOTE:
  •            *The shaf end can be doubl D and key connecton. From DN700 and above, the shaf end is double key type.
  •           *The flange connecton of the above table can be DIN2501 PN16, ASME B16.47-A 125/150LB, BS4504 PN10/PN16, JIS 10K,Table D ,Table E 
  •           * DN400’s valve face to face can be 85.7mm & 102mm. DN450’s valve face to face can be 104mm & 114mm

    Manufacturing & Quality Control

    1. Technical Drawing Confirmation
    2. Casting
    3. Machining
    4. Surface Preparation and Coating
    5. Assembly
    6. Finished Inspection
    7. Packaging & Shipping

    Testing

    Standard testing items may include:

    • Shell pressure test
    • Seat leakage test
    • Dimensional inspection
    • Visual inspection
    • Coating inspection
    • Operating test

    Exact test methods, pressures, coating checks, and acceptance criteria should be confirmed according to the project specification.

    OEM Solutions

    Laux Valve provides OEM and customized butterfly valve solutions for distributors, EPC contractors, and industrial equipment manufacturers. Possible customization options include:

    • Body material
    • Disc material and coating
    • Shaft material
    • Seat material
    • Actuator
    • Body coating
    • Logo
    • Nameplate
    • Packaging

    Frequently Asked Questions

    What is a Nylon 11 coated disc butterfly valve?

    It is a butterfly valve with the disc protected by a Nylon 11 coating. Nylon 11, also known as polyamide 11, provides a smooth, corrosion-resistant, and abrasion-resistant surface on the ductile iron or metal disc.

    What does NSF/ANSI 61 certification mean for this valve?

    NSF/ANSI 61 is a drinking water system component standard. The selected wetted materials and coatings are certified or available with certification documents to support use in potable water service.

    Is the valve body epoxy coated?

    Yes. The valve body is available with a corrosion-resistant epoxy coating. Coating system, thickness, and test requirements should be confirmed according to the project specification.

    Why choose Nylon 11 over epoxy or nickel coating on the disc?

    Nylon 11 offers good chemical resistance, low friction, smooth operation, and resistance to wear and impact. Compared with epoxy, it can be more resistant to abrasion and mechanical damage in some services. The correct coating depends on media, temperature, and operating conditions.

    What materials are available?

    Body options include DI, WCB, CF8, CF8M, and aluminum bronze. Disc options include plated ductile iron, CF8, CF8M, duplex, bronze, aluminum bronze, nylon coated, and PTFE lined. Shaft options include SS420, SS316, 17-4PH, and duplex.

    What seat materials are available?

    Seat options include EPDM, NBR, high temperature EPDM, FKM, and PTFE. Selection depends on the medium, temperature, pressure, and chemical compatibility.

    Can this valve be used for drinking water?

    Yes. The valve can be configured with NSF/ANSI 61 certified wetted materials and coatings for potable water systems. Certification documents should be requested and matched to the selected size and materials.

    Can the wafer butterfly valve be automated?

    Yes. Actuation options include lever handle, gear operator, electric actuator, and pneumatic actuator. ISO 5211 mounting can be confirmed according to project requirements.

    What industries use this valve?

    Typical applications include drinking water treatment and distribution, water supply, wastewater, HVAC, industrial water, and large diameter pipeline systems.

    How is the valve tested?

    Standard inspection may include shell pressure test, seat leakage test, dimensional inspection, visual inspection, coating inspection, and operating test. Test requirements should be confirmed according to the project specification.


Butterfly Valve Manufacturing Process
From Technical Confirmation to Final Delivery



Standardized Quality Control Process

From raw material inspection to final delivery, every butterfly valve undergoes a comprehensive quality inspection to ensure reliable performance and compliance with international standards.




International Certifications

Manufactured to international quality standards and certified for global industrial and potable water applications.





 

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