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Valve Painting and Coating

Zipson Valve painting & coating

Anti-Rust Services for Ball Valves

flanged ball valve painting

The most common metals used for valves include cast iron, carbon steel, stainless steel, brass, and bronze. Carbon steel is popular due to its low cost and suitability for most working conditions. Cast iron ball valves are also widely used in specific scenarios.

Stainless steel valves are more resistant to rust in indoor and outdoor environments but are more expensive than cast iron and carbon steel valves. In outdoor settings, cast iron and carbon steel surfaces can rust easily. Rust can compromise the structure of cast iron valves, reducing their lifespan. In harsh environments, these valves are more prone to accelerated corrosion from dust, seawater, and steam. Corroded valves not only look unattractive but also pose a risk of fluid contamination or leaks. This can be addressed through painting and coating.

An Effective Solution for Rust

Zipson valve coating

Over time, ball valves can rust. Painting them is an effective solution to extend their lifespan and improve their corrosion resistance. Here’s an overview of the painting process and the industrial ball valve painting services we offer.

The first critical step in painting ball valves is surface preparation. Chemical cleaning and mechanical grinding ensure the valve surface is clean and free from grease, dirt, and old paint. Some cast iron or cast steel ball valves at Zipson undergo phosphate treatment before painting to enhance rust resistance. These steps improve the primer’s adhesion and ensure uniform paint application.

Zipson diaphragm actuator painting

We follow the ISO 12944 coating standard, using high-performance epoxy primers and polyurethane topcoats. After applying the primer, it is allowed to dry completely before applying the topcoat. The topcoat not only provides an attractive finish but also increases durability and corrosion resistance. For more demanding environments, Zipson’s special alloy valves are a convenient choice.

Zipson is committed to providing high-quality industrial ball valve painting services. Our process includes thorough surface preparation and the use of standard-compliant primers and topcoats, effectively addressing rust issues and extending valve lifespan. This ensures stable operation in harsh environments. Through comprehensive painting procedures and rigorous testing, we deliver exceptional ball valve painting services that solve rust problems and enhance corrosion resistance, ensuring our products are reliable for long-term use.

Zipson flanged ball valve paintingAmong all ball valves, flanged ball valves have the highest painting demand, followed by three-piece ball valves. Due to their extensive use, broad applicability, and ease of assembly, carbon steel and cast iron flanged ball valves often require surface painting and coating. Once painted, flanged ball valves can last longer outdoors or in work environments.

painting thickness gauges

After painting, our quality control team uses thickness gauges to check the paint thickness, ensuring the total thickness of primer and topcoat meets customer requirements, usually between 150-300 microns. Adhesion tests are also conducted to ensure paint quality.

Adhesion tests