Westlake Pipe & Fittings 851040 4″ Schedule 80 PVC Solid Style Flange

Description

Westlake Pipe & Fittings 851040 4″ Schedule 80 PVC Solid Style Flange

The Westlake Pipe & Fittings 851040 4″ 80 PVC Solid Style Flange is a high-performance piping component engineered to provide a strong, reliable, and long-lasting connection point in demanding fluid handling systems across industrial, commercial, municipal, and agricultural applications. Manufactured from premium-grade Schedule 80 PVC, this solid style flange is designed to meet rigorous pressure, temperature, and chemical resistance requirements while maintaining dimensional accuracy and consistent performance over extended service life.

The solid style construction offers enhanced structural integrity compared to hollow or lighter-duty flanges, making it especially suitable for systems where mechanical strength, vibration resistance, and secure bolted connections are critical. With its 4-inch nominal size, this flange is commonly used in medium- to large-diameter piping systems, serving as a dependable interface for valves, pumps, tanks, and other flanged equipment.

The Schedule 80 rating signifies thicker walls and higher pressure capacity than Schedule 40 alternatives, allowing the flange to perform confidently in higher-pressure applications without compromising safety or durability. PVC as a material provides excellent resistance to a wide range of corrosive chemicals, acids, alkalis, and salts, making this flange an ideal choice for chemical processing, water treatment plants, wastewater management systems, plating lines, and industrial fluid transfer installations where metal components may corrode or degrade over time.

The solid PVC construction also ensures that the flange remains lightweight compared to metal counterparts, simplifying handling, alignment, and installation while reducing overall system load and labor costs. The precision-molded face and bolt pattern are engineered to ensure uniform gasket compression when properly installed, promoting leak-free sealing and consistent pressure distribution across the joint. This is particularly important in systems that experience frequent pressure fluctuations, thermal changes, or vibration, as it helps maintain joint integrity and minimize maintenance requirements.

The flange is designed to mate seamlessly with standard 4-inch flanged components, ensuring compatibility and interchangeability within ANSI-style piping layouts commonly used in PVC systems. Its smooth interior surface helps maintain optimal flow characteristics by minimizing turbulence and friction losses at connection points, which can contribute to improved system efficiency and reduced energy consumption in pumping applications.

Additionally, the non-conductive nature of PVC makes this flange suitable for installations where electrical isolation is required, such as in certain industrial or laboratory environments. The material’s inherent resistance to scaling and biological growth further supports clean operation in potable water and process water systems. Westlake Pipe & Fittings is known for stringent quality control and manufacturing standards, and this flange reflects that commitment through consistent wall thickness, accurate dimensions, and dependable performance under specified operating conditions.

The solid style design also provides added confidence in bolted assemblies, reducing the risk of cracking or deformation during installation when proper torque guidelines are followed. Because PVC does not rust, pit, or corrode, the flange maintains its appearance and functionality over time, even in harsh environments, contributing to lower lifecycle costs compared to traditional metal flanges. Whether used in new system construction, system expansion, or maintenance and replacement projects, the Westlake 851040 4″ Schedule 80 PVC Solid Style Flange offers a balance of strength, chemical resistance, ease of installation, and long-term reliability.

Its versatility makes it suitable for a wide range of applications including industrial processing lines, irrigation systems, aquaculture facilities, cooling water circuits, and municipal infrastructure, where dependable flanged connections are essential for system safety and efficiency. By combining robust solid-body construction with the proven advantages of Schedule 80 PVC, this flange provides engineers, contractors, and maintenance professionals with a trusted solution for creating secure, leak-resistant, and durable piping connections in challenging operating environments.

Westlake Pipe & Fittings is dedicated to helping contractors maximize efficiency and helping engineers design systems that entire communities can rely on.With manufacturing & distribution centers across North America, dedicated sales, technical services, specification engineers and customer support teams, our unparalleled service allows you to design, specify and install complete projects with confidence.

Westlake Pipe & Fittings 851040 4″ Schedule 80 PVC Solid Style Flange Features:

• Suitable for industrial, commercial, and municipal applications
• Solid style flange design for enhanced strength and durability
• Schedule 80 PVC construction for higher pressure capability
• Lightweight compared to metal flanges for easier installation
• Compatible with standard 4″ flanged valves and equipment
• Precision-molded bolt pattern for reliable, leak-free sealing
• Excellent resistance to corrosion, chemicals, and abrasion
• 4″ nominal size for medium to large PVC piping systems

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