DN20-DN110 Corrosion-Resistant PVDF 90° Bend for Chemical

Product Overview

The DN20-DN110 Corrosion-Resistant PVDF 90° Bend for Chemical is a critical fluid direction component engineered for corrosive pipeline systems. Manufactured from high-purity PVDF (polyvinylidene fluoride) resin through precision machining and extrusion, it offers exceptional resistance to concentrated acids, oxidizing agents, and organic solvents. With a pressure rating of PN16 (16 bar) and an operating temperature range of -40°C to 140°C, this 90° bend ensures reliable performance in demanding industries such as chemical processing, semiconductor manufacturing, and power generation, where fluid direction changes must not compromise system integrity.

Features

Extreme Chemical Immunity: Withstands prolonged exposure to 40% hydrofluoric acid, 15% sodium hypochlorite, and aromatic hydrocarbons (benzene, toluene) without swelling, cracking, or chemical leaching, outperforming PTFE in high-stress, high-temperature applications.

Precision Engineering: Features a 37° sealing angle for leak-free connections and a mirror-smooth inner surface (Ra ≤0.8μm) that minimizes fluid friction, reducing pressure loss by 15% compared to metal elbows with rough internal surfaces.

Wide Temperature Range: Maintains dimensional stability from -60°C (cryogenic storage) to 150°C (high-temperature reactors), with a low thermal expansion coefficient (80×10⁻⁶/°C) that prevents stress buildup during rapid temperature shifts.

Certified Compliance: Meets ISO 10931 standards for thermoplastic piping systems and ASME BPE (Bioprocessing Equipment) requirements, ensuring compatibility with ultra-pure water systems in Class 10 semiconductor cleanrooms.

High Mechanical Strength: Boasts tensile strength ≥53MPa and compressive strength ≥13MPa, providing resistance to pipeline vibrations, pressure surges, and external mechanical impacts in industrial environments.

Applications

Petrochemical Industry: Transfers benzene, xylene, and other aromatic solvents in refinery distillation units and alkylation plants, preventing corrosion-induced leaks that could lead to safety hazards or production downtime.

Semiconductor Manufacturing: Used in ultra-pure water (UPW) distribution systems for chip production, where its low particle shedding and high purity ensure compliance with SEMI F57 standards for microelectronics manufacturing.

Power Generation: Handles cooling water with high chloride content (up to 10,000 ppm) in thermal power plants, outperforming copper-nickel alloys that are prone to pitting corrosion in salt-rich environments.

Solar Energy: Integrates into solar panel cleaning systems, resisting UV-induced degradation and maintaining performance during frequent exposure to deionized water and cleaning agents (e.g., citric acid solutions).

FAQ

Q: What is the maximum pressure rating at 100°C?

A: Due to PVDF’s temperature-pressure derating characteristics, the working pressure decreases to 8 bar at 100°C — still sufficient for most high-temperature chemical transfer applications in industrial settings.

Q: Can it be used in saltwater or marine environments?

A: Yes, it exhibits excellent resistance to chloride-induced stress corrosion cracking (SCC), making it ideal for marine applications, desalination plants, and coastal industrial facilities where saltwater exposure is common.

Q: What welding method is recommended for DN110 bends?

A: Butt fusion welding following ISO 15494 standards is recommended for large-diameter DN110 bends, using a controlled temperature of 270°C ±10°C to ensure uniform fusion and full strength across the joint.