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Fluorine-Lined Check Valve

Fluorine-Lined Check Valve

Main Performance Parameters

• Nominal Pressure: PN6~PN25

• Nominal Diameter: DN15~DN300

• Operating Temperature: -50℃~+150℃ (depending on lining material; PFA and TFM modified fluoropolymer linings can withstand temperatures up to 260℃)

• Sealing Class: Class VI, extremely leak-proof

• Applicable Media: Strong acids, strong alkalis, strong oxidizers, organic solvents, hydrofluoric acid, aqua regia, and other highly corrosive media

Structural Forms

1. Lift Type (H41F46): Compact structure, excellent sealing performance, moderate flow resistance, suitable for horizontal pipelines.

2. Swing Type (H44F46): Single-plate structure, large diameter, low flow resistance, suitable for high-flow, large-diameter pipelines.

3. Vertical Type (H42F46): Adapted for vertically upward-installed pipelines, unidirectional backflow prevention, dedicated to vertical operating conditions.

Product Description

Key Advantages

 

• Fully Fluorine-Lined for Corrosion Resistance: Lined with fluoroplastics, offering exceptional chemical stability and tolerance to a full range of pH levels from 0 to 14.

• Automatic Backflow Prevention: Self-regulating operation based on media pressure, eliminating the need for external force and effectively preventing backflow.

• Maintenance-Free Operation: Self-operated design, simple structure, low failure rate, and cost-effective.

• Protective Equipment: Installed at the downstream end of pumps and reactors to prevent corrosive media from flowing back and damaging equipment.

• High Cost-Effectiveness: Carbon steel shell + fluoroplastic lining, replacing expensive special valves made of Hastelloy, titanium, etc.

 

Applicable Applications

 

• Chemical Industry: Pipelines for conveying acid and alkali solutions, corrosive agents, and organic solvents.

• Environmental Protection Industry: Desulfurization and denitrification, chemical wastewater, and electroplating wastewater treatment systems.

• Metallurgical Electroplating: Pipelines for conveying pickling, etching, and electroplating solutions, preventing backflow of chemicals.

• Fine Chemicals and Pharmaceuticals: Transportation of highly corrosive materials, requiring corrosion-resistant and clean piping. • Industrial Pipelines: A key component at the outlet of corrosion-resistant pumps, ensuring the stable operation of the entire chemical pipeline system.

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Related Products

Fluorine-Lined Gate Valve

Fluorine-Lined Gate Valve

Basic Definition: A fluoropolymer-lined gate valve is a forced-seal shut-off valve in which the inner surfaces of the valve body, cover, disc, and seat—all in contact with the medium—are entirely lined with a layer of fluoroplastic (PTFE/FEP/PFA/TFM, etc.). Its core structure combines metal load-bearing with fluoroplastic corrosion protection.

Core Structure:
• Valve Body/Cover: Carbon steel/stainless steel shell, lined with fluoroplastic
• Valve Disc/Seat: Fully fluoropolymer-lined, flat/conical seal, axially moving
• Valve Stem: Rising stem or rising/rotating stem, with packing seal
• Actuation: Manual, worm gear, pneumatic, electric

Fluorine-Lined Gate Valve

Fluorine-Lined Gate Valve

Working Principle:
The valve stem drives the gate to rise and fall vertically, controlling the flow of the pipeline; the medium only contacts the fluoroplastic lining layer and does not directly contact the metal valve body, completely isolating it from acid and alkali corrosion; it allows bidirectional flow without flow direction restriction, and is only used for switching off, not for throttling or regulating.

Gate

Gate

Working Principle: The valve stem drives the gate to move vertically up and down. When the gate is fully raised, the pipeline is straight and flow is unimpeded; when the gate falls, it presses against the valve seat, blocking the flow of media.

The media can flow in both directions without directional restrictions, and there are no flow direction requirements during installation.

Forged Steel Gate Valve

Forged Steel Gate Valve

Jīběn jiégòu duàn gāng zháfá shì yī zhǒng guānbì jiàn (zhá bǎn) yán tōnglù zhōngxīn xiàn chuízhí fāngxiàng yídòng de fámén, qí qǐ bì jiàn wèi zhá bǎn, yùndòng fāngxiàng yǔ liútǐ fāngxiàng chuízhí, tōngcháng jǐn yòng yú quán kāi huò quán guān, bù jùbèi tiáojié huò jié liú gōngnéng. Duàn gāng zháfá de zhá bǎn tōngcháng jùyǒu liǎng gè mìfēng miàn, zuì chángyòng de móshì zhá bǎn fá mìfēng miàn xíngchéng xiēxíng, xiēxíng jiǎo suí fámén shēn shù ér yì. Zhǔyào cānshù • gōngchēng yālì:PN16~PN160, shì pèi gāoyā, gāowēn gāoyā gōng kuàng • gōng chèn tōng jìng:DN15~DN200, yǐ xiǎo kǒujìng gāoyā guǎndào wéi zhǔ • gōngzuò wēndù: Tàn gāng-29℃~425℃; bùxiùgāng/héjīn gāng kě nài shòu 600℃yǐshàng gāowēn • fá tǐ cáizhì:A105,304,316L,F11,F22 děng zhěngtǐ duànzào cáizhì • mìfēng děngjí: Yìng mìfēng, ruǎn mìfēng kě xuǎn, mìfēng xìngnéng wěndìng, nài yā xìng qiáng
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Basic Structure A forged steel gate valve is a valve in which the closing element (gate) moves perpendicular to the centerline of the flow path. Its opening and closing element is the gate, and its movement direction is perpendicular to the fluid direction. It is typically used only for fully open or fully closed applications and does not have regulating or throttling functions.

The gate of a forged steel gate valve usually has two sealing surfaces. The most common type of gate valve has a wedge-shaped sealing surface, and the wedge angle varies depending on the valve parameters.

+86 19858780995

+86 19858780995

+86 19858780995

+86 19858780995

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