Check valve DN250, FIG.402 402A250C52

Check valve – reliable installation protection

This cast iron check valve, with a nominal diameter of 250 mm, is a key element in any installation where protection against backflow of medium is required. Designed to operate within a wide temperature range, from -10°C to 80°C, it ensures reliable operation in various conditions. Made of durable gray cast iron, it guarantees long service life and corrosion resistance.

The FIG.402 valve is characterized by a flanged connection, which facilitates installation and removal in existing systems. Its design allows operation in any position, providing flexibility during installation. Additionally, the valve is designed to minimize pressure loss, which translates to energy efficiency of the entire installation.

Construction and application

The check valve from the FIG.402 series finds application in many industries – from industry and heating to shipbuilding. It works perfectly in installations using glycol, industrial water and chemically neutral agents. Thanks to its solid construction and high-quality materials, it does not require maintenance, which reduces operating costs.

The valve construction is based on proven solutions – the body is made of gray cast iron (EN-GJL-250), and the closing assembly of ductile cast iron (EN-GJS-400-15). The EPDM gasket ensures tightness and reliable operation. Various versions are available (including 52 – EPDM/epoxy coated cast iron seal), adapted to specific application needs.

Key features and benefits

• Versatility: The possibility of mounting in any position facilitates installation even in hard-to-reach places.
• Low flow rate: Minimised pressure losses translate into energy savings and more efficient system operation.
• Maintenance-free: No need for regular maintenance reduces operating costs and ensures continuous operation of the installation.
• Durability: Made of high-quality gray cast iron guarantees long service life and corrosion resistance.
• Compliance with standards: The valve meets the requirements of the pressure equipment directive 2014/68/EU and has CE marking for diameters ≥65 mm, which confirms its safety and quality.
• Wide temperature range: Operation in the range from -10°C to 80°C allows the valve to be used in various environmental conditions.