In direct comparison with conventional valve designs, such as ball valves, coaxial valves offer decisive advantages. Due to their pressure-relieved design, the switching behavior remains almost entirely independent of the medium pressure applied. The valves switch reliably and perform consistently, regardless of whether they are used under vacuum, low, or high pressure.
Another advantage is the high level of tightness: coaxial valves are back-pressure-tight at the valve seat, which means they reliably prevent leaks even when the pressure changes. At the same time, the design ensures minimal wear – even with contaminated or demanding media. The result: maintenance-free operation over long periods.
The coaxial design also allows for a particularly compact build with very short switching times. Reproducible switching operations in the range of just a few milliseconds make these valves ideal for dynamic processes. At the same time, they allow bidirectional flow and can be flexibly integrated into a wide variety of system concepts.
Coaxial valves particularly excel in applications where space is limited and high standards of reliability and chemical resistance are required. Typical applications include mechanical and plant engineering, gas and vacuum technology, as well as test benches and dosing systems.
The coaxial design keeps forces within the valve balanced regardless of system pressure and Δp. Whether controlling vacuum or high pressure - performance remains precise and dependable. Unlike conventional valves, coaxial valves require no minimum pressure differential in order to function.
When the valve is closed, the pressure at the outlet side can be higher without any leakage.
The unique coaxial valve design minimizes wear of the valve seat even where extremely contaminated media is involved. Due to the special design with only a single moving part, no stem seal or external actuator / operator, coaxial valves do not require any maintenance. Even under extreme conditions, coaxial valves have up to 10 times longer lifetimes than conventional valves.
Pressure balanced design provides fast, repeatable operation in less than 30 milliseconds making coaxial valves some of the fastest valves you can specify.
The valve design allows the medium to flow through in both directions, eliminating the need for multiple valves.
The coaxial valve design provides a compact package by eliminating bulky actuators.