Fire protection valve are used for protection of premises. Their purpose is automatic closure of the pipeline in case of fire, thus preventing generation of explosive mixture by leakage of gas from gas pipeline or gas device as a result of damage by heat. A fire fitting usually consists of a steel body equipped with coupling elements and internal valve, which is attached to a pressure spring in a thermal casing and secured by a safety fuse. The automatic closure of the fitting takes place when the ambient/medium temperature exceeds the acceptable limit; in this case, the thermal fuse-solder melts and the disengaged spring presses the valve into the valve seat of the fitting body and tightly closes the medium flow. Description of individual types and options is given in the following text of this catalogue.
RANGE OF APPLICATION AND SPECIFICATIONS
Medium:
All types of gases according to EN 437 and DVGW AB G 260/1
Medium/ambient operating temperature range:
-10ºC up to +80ºC/-20ºC up to +80ºC
Closing temperature:
100ºC ±5ºC
Closing temperature:
Approx. 45 sec
Thermal resistance:
925ºC
Sealing time after closure:
min. 60 min
Labeling of gas flow direction:
Arrow on fitting body