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We supply manual,worm-gear,pneumatic and electric actuators for lined butterfly valves.

Anti-Corrosion Flange Butterfly Valve with Reliable PTFE Lining Technology

Name: Anti-Corrosion Flange Butterfly Valve with Reliable PTFE Lining Technology
Brand: Naifulong Group Co., Ltd.
SKU: 2325009825

Zhejiang, ChinaNaifulong Group Co., Ltd.

US$10.00-5,000.00

1 Set

Product profile

Customization

Available

Media

Acid

Driving Mode

Pneumatic

Model NO.

custom

Connection Form

Flange

Structure

Centre Sealing

Seal Form

Force Sealed

Valve Stem

Normal

Work Pressure

Low Pressure (Pn<1.6mpa)

Working Temperature

Normal Temperature (-40°C<T<120°C)

Material of Seal Surface

Soft Sealed

Valve Body

Casting

Standard

GB/T 12224 , Hg/T3704

Application

Industrial Usage, Water Industrial Usage

Nominal Diameter

DN15-DN1800

Body Material

Wcb/CF8/CF3m

Lining Material

PTFE/FEP/PFA

Seat Material

PTFE

Specification

Customizable

Trademark

NFL

Origin

China

Key features

The center line butterfly valve is concentric with the entrie butterfly plate and seat within a 360 circumference(center line).With two-way sealing function,pressure and flow can be freely adjusted.

Four level loading elastic seal absolutely ensures zero leakage inside and outside the valve.

A.Reasonable interference between the special transition curve at the circumferential connection of the shaft head and butterfly plate and the seat.

B.The end face of the shaft head is composed of elastic O-ring,a rigid gasket at the shaft shoulder,and elastic rubber gasket.

C.The radial direction of the shaft adopts the combination of O-ring and metal gasket.

D.The seat is embedded in an elastic body groove.

Adjustable elastic marble positioning is adopted,with accurate positioning and simple structure.

Design standards : Comply with HG/T 3704. GB/T 12224. ASME B16.34.

Driving mode:Manual,worm gear transmission,Pneumatic,Electric

Butterfly valve is with the stem rotation of the butterfly plate for opening and closing parts,to achieve the opening,closing and adjustment of the valve.

Company profile

Importers and ExportersPatents AwardedExhibition ExperienceHigh Repeat Buyers Choice

Naifulong Group Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 18 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤0.75h

AI-Powered supplier vetting

SummaryThe supplier is a Zhejiang-based high-tech manufacturer focused on pumps, vacuum equipment, valves, hardware, metal products, and industrial automation components. It reports over 40 patents, recent new-product development, ODM services, and OEM work for well-known brands. Production is supported by machining, injection, CNC, welding, and pipe-machining facilities, 12 quality inspectors, documented finished-product inspection instructions, and valid contracts with associated subcontractors. Quality and sustainability systems include ISO9001:2015, ISO45001:2018, and ISO14001 certifications, while regular fire drills were conducted during the past year. The supplier has 18 years of export experience, with exports representing 51%–70% of total sales, and has participated in the Russian PVC Exhibition. However, it reports no SDK, inventory, overseas warehouse, overseas showroom, overseas agent or branch, and zero countries with overseas service coverage. Financial records are identified for 2023–2025, but no...

Supplier typeThe supplier identifies itself as a national high-tech enterprise, Zhejiang Made unit, and specialized and sophisticated enterprise. Its stated business scope covers manufacturing, pumps and vacuum equipment, valves and plugs, hardware, metal products, and industrial automation products, indicating a diversified industrial equipment manufacturer.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications. It also reports other product-compliance certification, but the specific standard is not identified, so the assessment is supported primarily by the named management-system certificates.

After-Sales capabilityThe supplier reports no in-stock service capability, overseas warehouse, overseas showroom, overseas agent, or overseas branch, and lists zero countries where overseas services are offered. These stated limitations indicate weak overseas after-sales and local-service coverage.

R&D capabilityThe supplier reports more than 40 patents, including multiple national patents, and states that it developed new products during the past year. It also provides ODM and OEM services, although it explicitly reports no available SDK.

Production capacityProduction evidence includes valid manufacturing-capacity contracts with associated subcontractors, machining, injection, CNC, welding, and pipe-machining facilities, 12 quality inspectors, documented inspection instructions, and a one-month peak-season lead time. The supplier also reports 12 qualified service-capability suppliers and written procedures with follow-up records, supporting substantial production and quality-management capability.

Customization capabilityThe supplier reports customization from samples, ODM services, and OEM services for well-known brands. These statements directly support the ability to deliver customer-specific products and manufacturing solutions.

Product Q&A

Q:What is the main advantage of PTFE-lined butterfly valve?

It has excellent corrosion resistance against most acids, alkalis and chemical media, suitable for corrosive working conditions.

Q:What media can PTFE-lined butterfly valves handle?

Suitable for corrosive liquid,gas medium such as sulfuric acid,hydrochloric acid,alkali solution,not for molten alkali metal and strong fluorine-containing medium.

Q:What sealing type should I choose for lined butterfly valve?

Most common chemical-use lined butterfly valves adopt Force Sealed type.Auto-sealed and pressure-charging sealed are for special customized requirements.

Q:What is the working temperature range of PTFE lining butterfly valve?

General PTFE lined butterfly valve working temperature:-20~150.Actual range depends on liner material.

Q:Can lined butterfly valve be used for high-pressure service?

Lined butterfly valves are mainly for medium-low pressure.For high-pressure working condition,please confirm with our technical team.