Breathing valves
Oil industry, chemical industry,
pharmaceutical fittings
Overpressure
FF-RKLS
Weight and spring-loaded pressure relief valve. Exhausts to the outside environment. Increased opening pressure from +50 mbar to +300 mbar. Available sizes: DN15 – DN300
FF-CKLS
Breathing valve for overpressure. Exhalation takes place into the external environment. Reduced opening pressure from 0 mbar to + 4.5 mbar. Available sizes: DN15 – DN300
FF-KLS
Breathing valve for overpressure. Exhausts into the external environment. Opening pressure: +5 mbar to +50 mbar. Available sizes: DN15 – DN300
Vacuum
FF-CBLS
Weight-loaded intake valve for vacuum. Intake from the external environment. Reduced opening pressure from -1 mbar to -4.5 mbar. Available sizes: DN15 – DN300
FF-BLS
Weight-loaded intake valve for vacuum. Intake occurs from the external environment. Opening pressure value from -4.5 mbar to -50 mbar. Available sizes: DN15 – DN300
Combined
FF-FKS
Weight-loaded combined breathing valve with heating jacket, for overpressure and vacuum. Exhalation and inhalation take place into and from the external environment. Opening pressure: from ±4.5 mbar to ±300 mbar.
FF-ZRS-K
A closed-system pressure control valve is a device that limits the build-up of excess pressure or vacuum within a system when these parameters reach or exceed a predetermined value relative to atmospheric pressure.
FF-RDKS-FB
Combined weight and spring-loaded breathing valve with heating jacket, for overpressure and vacuum, with increased opening pressure. System and inhalation side with flange connection, exhalation to the outside environment. Opening pressure: ±50 mbar to ±300 mbar.
FF-DKS-B
Weight-loaded combined breathing valve for overpressure and vacuum. System and inhalation side with flange connection, exhalation to the outside environment. Opening pressures: ±5 to ±50 mbar.
FF-DKS-K-A
Weight-loaded combined breathing valve for overpressure and vacuum. System and exhaust side with flange connection, inhalation from the external environment. Opening pressures: ±5 to ±50 mbar.
FF-RHLF-N-K
A pressure relief valve is a device that limits the build-up of excess pressure or vacuum within a system when these parameters reach or exceed a predetermined value relative to atmospheric pressure.
FF-CHLF-N-K
Weight-loaded combined breathing valve for overpressure and vacuum, with reduced opening pressures from ±1 mbar to ±4.5 mbar. Exhalation and inhalation take place into and from the external environment.
FF-HLF-N-K
Weight-loaded combined breathing valve for overpressure and vacuum. Opening pressures: ±5 mbar to ±50 mbar. Exhalation and inhalation take place into and from the external environment.
Forced operation
FF-LSU
Forced-action breathing valve for floating roof tanks. Exhalation and inhalation take place into and from the external environment. Valve opening at a specified position using a rod mechanism.