Valves Reliable valves. Designed for safety.

With over 50 years of experience, SOLE is a trusted partner to Europe’s leading manufacturers of water heating, plumbing and HVAC systems. Our valves are the result of continuous development in close collaboration with industry pioneers—ensuring reliability, safety, and cost-efficiency at scale.

Installed in millions of water heaters and energy systems across Europe, SOLE’s patented and customizable valve solutions are chosen by OEMs who demand compact, multi-functional, and high-performance components. From simple shut-off valves to advanced integrated valve systems, we deliver flexible, compliant, and long-lasting quality—built to meet the needs of tomorrow’s systems.

Product types

Valve Type	Description
Safety Valves	Multiple designs with opening pressure from 2–10 bar. Designed for reliability and protection against overpressure.
Combined Valves	Compact all-in-one units combining mixing, safety, check, and shut-off valves. Available in DN15 and DN20. Patented design.
Pressure Reducing Valves	Designed for minimal pressure drop, easy filter maintenance, and long service life.

Applications

Engineered for fluid control in critical systems

Water Heaters
Our combined valves are integrated in domestic and industrial water heaters across Europe, ensuring safe operation and optimal mixing, pressure control and flow management.
HVAC and District Energy Systems
Ideal for sanitary systems requiring high safety standards, compact design, and easy maintenance.

Advantages

Patented innovation: Several proprietary designs that combine multiple functions into one compact, reliable unit.
Custom valve engineering: We develop tailor-made valves to meet your design, performance, and cost requirements.
Long-Lasting and easy to maintain: Valves built for durability with components that are easy to clean or replace.
Certified & compliant: EN 1487, EN1488, EN1489-certified valves for water heating and plumbing safety standards.