GLOBTOS P250-25 F 585 1,5

Ball valve for pre-insulation – full bore DN250 PN25

Safe solution for underground networks. The GLOBTOS DN250 PN25 full bore ball valve with wrench operation (hexagonal stem) for pre-insulated installations is a specialized valve designed for underground district heating networks using dry insulation technology.

Key features of the DN250 valve

Dry stem technology – innovative protection

The stem sealing located directly next to the ball eliminates the risk of the working medium entering the pipeline insulation layer. Even in the event of damage to the upper part of the stem, the installation remains safe.

Full bore – maximum efficiency

The ball diameter equal to the pipeline diameter ensures unrestricted flow without pressure losses. This is particularly important in long transmission networks, where every reduction in resistance translates into energy savings.

Compliance with EN 488

Valves designed in accordance with EN 488 requirements for pre-insulated systems. Full compatibility with pre-insulated pipelines from leading manufacturers.

Design for demanding conditions

• Welded body: High-quality carbon steel – high strength
• Extended stem: High-quality stainless steel – corrosion resistance
• Ball: High-quality stainless steel – resistance to wear and corrosion
• Special thermal insulation seals
• Anti-corrosion protection

Applications

• Underground pre-insulated district heating networks
• Main transmission pipelines
• Municipal district heating infrastructure
• Installations requiring EN 488 compliance

Availability and Lead Time

Specialized valves available directly from stock. Standard sizes are processed with express delivery – orders placed before 11:00 AM are shipped the same day. Our own transport fleet guarantees safe delivery throughout Poland. Custom-made products are available on request. Non-standard sizes are manufactured according to an individual schedule. Contact us for details.

Technical Specification

• Nominal diameter: DN250
• Nominal pressure: PN25
• Operation: with wrench operation (hexagonal stem)
• Temperature range: -20°C do +200°C
• Bore type: Full bore 
• Technology: Dry stem system
• Compliance: EN 488

Compliance with standards

• EN 488 – pre-insulated piping systems
• Leakage class: A (according to EN 12266-1)
• Welded construction compliant with district heating network requirements

GLOBTOS – valves designed for operation in demanding conditions