A HI-FOG® system can contain a number of different types of valves, with each one playing a different functional role within the system. All HI-FOG® valve types are engineered and manufactured by Marioff to ensure high performance.
Sprinkler Section Valves
Section valves are used to divide a HI-FOG® sprinkler system into sections and are normally open and monitored. When there is water flow through the valve, it indicates a sprinkler has been activated and the HI-FOG® system is automatically activated.
The section valve can also be used to manually close the water supply in case of section maintenance. For routine maintenance testing, section valves are equipped with a test connection to simulate sprinkler activation.
Section valves are available in several sizes and can be fitted with various types of flow indications and other accessories as needed.
Machinery Space Valves
Machinery space valves are mainly used in HI-FOG® systems which contain open spray heads. The valves are normally closed, so that when a fire alarm is received from a specific section the dedicated valve for that section can open to allow discharge. The valve can be opened automatically or manually through remote or local control.
Release and Control Valves
A wide range of release and control valves are available for the activation of gas-driven systems. Release valves open the gas source for single or multiple discharges, while the gas cylinders can be released either through one common manifold release valve or individual release valves. The release method can be electric, pneumatic, hydraulic or manual.
Marioff also provides other valves, such as non-return valves, ball valves and stabilization valves, as part of a system installation. The majority of these valves are also designed and manufactured by Marioff.