What is the liner for a control valve?

Understanding the Liner for a Control Valve

A control valve liner, often referred to as a sleeve, hose, tube, diaphragm, bladder, or rubber membrane, is an integral component that enhances valve performance and longevity. According to Flowserve, the liner is the only wetted part of a valve, and using high-quality materials such as PFA, FEP, PP, PVDF, and ETFE ensures longer service life and efficient operation in various industrial applications.

Pinch Valve Liner Service Life

The liner in a pinch valve is specifically designed as the only part that comes into contact with the medium, making it the primary component needing replacement over time. This characteristic naturally lowers the overall maintenance cost compared to other valve types. Ensuring the liner operates within the recommended specifications can significantly enhance its lifespan. Studying specific case studies, such as those from AKO's customers, can provide insights into the applications and expected durability of pinch valve liners.

For more detailed information on this subject, feel free to explore our lined control valve resource.

Lined Control Valves Series 132000

Material Compatibility with Corrosive Fluids

Control valves handling corrosive fluids need robust materials to prevent damage and ensure longevity. Flowserve's Series 132000 offers valves constructed from durable materials like Carbon Steel, Stainless Steel, Titanium, Hastelloy, Alloy 6, Inconel, and Monel. The company also provides various plastic and plastic-lined options for industries encountering higher levels of chemical exposure.

Features of Series 132000 Control Valves

Flowserve’s dedicated R&D has resulted in the Series 132000 valves, which integrate decades of experience in lined ball and plug valves. These valves feature high-quality linings and PTFE bellows for various industrial applications. The linings from materials such as PFA, PVDF, PP, and ETFE ensure chemical resistance and durability.

For more information on petrochemical valves, you can reach out to our experts.

Applications and Design Benefits

The Series 132000 control valves are suitable for a myriad of applications, including Reactor Feed, Chlor-alkali, Synthetics, Beverage Processing, and Utility services, among others. Their optimized body design translates to a range of Kvs/Cv-values, allowing the selection of smaller, yet efficient valves suited for specific needs.

High-Quality Materials

The lining materials for these valves include PFA, FEP, PP, PVDF, and ETFE, with a standard thickness of at least 5mm for most applications, ensuring robust chemical resistance. The T-grooves provide a firm connection between the liner and the metal body, crucial in vacuum applications.

Durability Testing

To ensure reliability, Flowserve conducts extensive lifecycle testing under extreme conditions. This ensures that the PN16 bellows seal, made from modified PTFE (TFM), meets rigorous industry standards, offering production consistency and longevity.

Key Features

• High Quality liner materials
• Liner material thickness
• T-grooves
• Standard PN 16 bellows seal
• DIN and ANSI bodies
• Anti-blowout stem design

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