Float valve DN100, FIG.272, construction 16: stem and mushroom - stainless steel, mushroom end - conical EPDM 272A100B16

Float valve DN100 is a reliable solution for flow control in water and industrial systems. Designed for use with water—both hot and cold—as well as other chemically neutral media. The valve’s construction is based on proven materials and technologies, ensuring long-term, maintenance-free operation.

This valve is widely applicable across diverse installations—from fire protection and district heating systems to industrial processes. Its design ensures safe and environmentally friendly operation while eliminating the need for regular maintenance. Installation is performed via flanges, facilitating seamless integration with existing infrastructure.

Construction and Materials

The key element of this valve is its robust, corrosion-resistant design. The body is manufactured from gray cast iron EN GJL-250, providing a solid foundation for the entire mechanism. The stem, mushroom, and body ring are made from stainless steel—critical for ensuring long service life and resistance to aggressive media. The mushroom end is finished with EPDM, guaranteeing seal integrity and connection flexibility. This careful material selection results in minimal risk of failure and extended operational life.

Operating Parameters and Compliance with Standards

The DN100 float valve features a pressure class of PN 10 and a nominal diameter of DN 100. It complies with EN 12266-1 for tightness (Class A), confirming its high quality and reliability. Flanges are machined in accordance with EN 1092-2, and the face-to-face dimension follows Series 1 per EN 558-1—ensuring compatibility with existing systems and components. Maximum operating pressure is 10 bar, with a maximum operating temperature of +90°C.

Operating Principle

The valve operates via a simple float mechanism. The float is connected to the valve seat by a linkage. As the medium level rises, the float lifts, closing the valve—preventing tank or system overflow. When the float descends, the valve opens, allowing liquid flow to resume. This simple yet effective design ensures easy operation and dependable performance.