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Specifications:
◎ Material: Carbon Steel, Stainless Steel, Alloy Steel
◎ Nominal Size: NPS 2"~ 48"
◎ Pressure Rate: Class 150~2500, PN 16~420
◎ Temperature Range: -60°C to +425°C
◎ Operator: Manual, Pneumatic, Electric, etc..
◎ Application range: The insulated ball valve is suitable for all media piping systems with strict temperature control requirements, especially in high-temperature anti-solidification, low-temperature anti-frost or high-viscosity fluid transportation, where it plays an irreplaceable role.
Naishi Insulated Ball Valve – Structure & Function To ensure stable medium temperature and reliable system operation, insulated ball valves are equipped with external insulation structures tailored for different working conditions and valve sizes.
Metal Jacketing + Insulation Wool (Rock Wool/Glass Wool)
Structure: Insulation materials (rock wool or glass wool) are wrapped around the valve body, enclosed by galvanized steel or stainless-steel cladding.
Features: Cost-effective and easy to maintain Ideal for large-size valves
Provides reliable heat retention and personnel protection
Sprayed Thermal Insulation Coating
Structure: Polyurethane foam or polyurea thermal insulation is directly sprayed onto the valve surface.
Features:Smooth and compact appearance Excellent thermal insulation performance Suitable for small and medium-sized valves Space-saving and lightweight design
Prefabricated Insulation Shell
Structure: Factory-made rigid insulation shells, typically made of FRP (fiber-reinforced plastic) or modular insulation units.
Features: Uniform and aesthetic exterior Easy installation and disassembly Suitable for standardized piping systems and repeated maintenance
Key Purposes of Insulated Ball Valves
Insulated ball valves are designed to meet temperature-sensitive applications by maintaining heat, preventing freezing, and ensuring operational safety:
| Purpose | Description |
| Anti-freezing | Prevents medium solidification in cold environments (e.g., crude oil, asphalt) |
| Heat retention | Reduces heat loss, improves energy efficiency |
| Condensation prevention | Keeps valve surface temperature above dew point to avoid corrosion or dripping |
| Personnel protection | Prevents burns or frostbite from high or low surface temperatures |
| Clean appearance | Provides a professional and uniform look for piping systems |
| Extended equipment life | Reduces thermal stress and prolongs valve service life |
Naishi Insulated Ball Valves are available with customized insulation structures based on medium, temperature, size, and corrosion resistance requirements. Ideal for applications in steam systems, oil pipelines, LNG stations, food processing, and chemical industries.
