D341F46/J Fluorine Lined Flange Butterfly Valve

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D341F46/J Fluorine Lined Flange Butterfly Valve

DFJ Fluorine Lined Flange Butterfly Valve

D341F46/J Fluorine Lined Flange Butterfly Valve

The D341F46/J Fluorine-Lined Flange Butterfly Valve adopts advanced fluoroplastic lining technology, offering excellent corrosion resistance for harsh applications involving strong acids and alkalis.

Performance and characteristics:

Product Overview

The D341F46/J Fluorine-Lined Flange Butterfly Valve adopts advanced fluoroplastic lining technology, offering excellent corrosion resistance for harsh applications involving strong acids and alkalis. Featuring centerline design with compact structure, easy operation and reliable sealing, it’s an ideal choice for chemical, pharmaceutical, electroplating and other industries.

Product Features

Fluoroplastic lining– Superior corrosion resistance for strong acid/alkali media
Centerline design– Compact structure with low operating torque
Bidirectional sealing– Zero leakage in both flow directions
Low flow resistance– Minimal resistance when fully open for energy saving
Long service life– Anti-aging lining ensures extended durability
Multiple actuation options– Manual, electric or pneumatic operation available
Easy maintenance– Can be serviced without special tools

Technical Specifications

Parameter	Specification
Nominal diameter	DN50～DN1200 (2″～48″)
Nominal pressure	PN6～PN16 (Class 150)
Operating temperature	-20℃～180℃ (varies by lining material)
Applicable media	Strong acids, alkalis, organic solvents and other corrosive media
Connection type	Flange connection (GB/T 9113, HG/T 20592 standards)
Body material	Cast iron, carbon steel, stainless steel (fluorine-lined)
Lining material	PTFE(F4), FEP(F46), PFA, etc.
Stem material	Stainless steel (1Cr18Ni9Ti, 316, etc.)
Sealing material	Fluororubber(FKM), PTFE, EPDM, etc.
Testing standards	GB/T 13927, API 598, ISO 5208

Working Principle

The D341F46/J Fluorine-Lined Flange Butterfly Valve operates by rotating the stem to drive the disc through 90° rotation for opening/closing. When parallel to pipeline axis, the valve is fully open; when perpendicular, fully closed. The fluoroplastic lining directly contacts media for superior corrosion protection, while elastic sealing rings ensure zero leakage when closed.

Structural Features

Full-body lining– Complete fluoroplastic coverage of valve interior and disc
Eccentric structure– Reduces friction, extends service life
Multi-layer sealing– Ensures tight sealing performance
Blow-out proof stem– Safety design prevents accidental stem ejection
Replaceable sealing rings– Easy maintenance reduces operational costs

Application Fields

Chemical industry: Transportation of corrosive media like acids, alkalis and salts
Pharmaceutical industry: High-purity media delivery systems
Electroplating industry: Electroplating solution circulation systems
Environmental engineering: Wastewater treatment systems
Metallurgical industry: Pickling production lines
Petrochemical industry: Corrosive media control

Installation & Maintenance

Installation Requirements

Clean pipelines before installation to prevent damage to lining from welding slag
Install in easily accessible locations for operation and maintenance
Tighten flange bolts evenly in diagonal sequence to prevent lining deformation
Ensure medium flow direction matches valve body arrow indication
Do not allow the valve to bear pipeline weight or external forces

Maintenance