Sizes: DN 25-300
Operating pressure: max. 60 bar
Compressed air: 3 bar…10 bar
Operating temperatures: -196 °C…+400 °C
Ambient temperature: -25°C…+80 °C
Other names: emergency quick-closing valve, emergency shut-off valve, quick-action shut-off valve
A quick-closing valve – also known as an emergency quick-closing valve and emergency shut-off valve – is a device that closes a pipeline quickly and tightly in the event of a disturbance without external energy.
The typical applications of emergency quick-closing valves are fuel lines and other critical areas where it is essential to secure the process quickly and safely. In a disturbance situation, the line can be closed in less than a second, thereby protecting the entire system from damage and potential hazards. No electricity or compressed air is required for closing, as the closure is achieved by means of spring force.
Read Kai Heinänen’s article in PROMAINT Magazine: Emergency Quick-closing Valves are Expected to be Reliable.
All quick-closing valves are actuator-operated, meaning that their control can be performed remotely from the valve itself. The actuator closing mechanisms use a spring, and they are primarily operated by compressed air or electro-hydraulics.
We represent the German company KÜHMEÄ, whose comprehensive range includes emergency quick-closing valves approved in accordance with the EN 161, EN 16678 and EN 23553-1 standards.
Cryogenic quick-closing valves differ only slightly from conventional quick-closing valves. In a valve intended for cryogenic use, the extremely low temperature has been taken into account. The valve is delivered clean and dry. It comes with an extended stem, and the materials are selected for cold resistance. Thermal expansion has been considered in the design and dimensioning.
In our range, there is the KÜHME quick-closing valve KVL/PR-TT, which is specifically designed for cryogenic media (-196 °C). The valve achieves closure times of less than one second. If necessary, ATEX and SIL certifications are available for the emergency shut-off valve.
The valve opening can be adjusted to optimize the flow during startup.
The quick-closing valve complies with the requirements of the EN 1160 standard, which applies to equipment used with liquefied natural gas (LNG).
We assist in selecting and sizing the appropriate quick-closing valve according to the application.
