Product Description
JOB THERMO BULBS are thermally actuated release elements for automatic sprinklers, smoke vents, fire dampers and other release devices. A hermetically sealed liquid (G- or F-type) in the glass bulbs expands with rising temperatures breaking the bulbs into small fragments at a predetermined release temperature. The unique bone shape design of JOB THERMO BULBS (US Patent 4,796,710 and other international patents ) combined with the special liquid (F-type; US Patent No. 4,938,294) are decisive factors for the outstanding thermal response performance and strength of the glass bulbs. All the main features of JOBTHERMO BULBS can be taken from the chart at the "technical data".
F3-F Thermo Bulbs
The super fast THERMO BULB® Type F3-F is a high performance fast response THERMO BULB® featuring improved strength and sensivity characteristics. The response time is 25% faster than of the standard fast response bulb type F3/F3-SP with superior strength condition.
F3-SP THERMO BULBS
The superior THERMO BULB® Type F3-SP is a Heavy Duty Fast Response THERMO BULB® featuring an approx. 50% higher resistance against side impacts with the same Response Time Index of 32(ms) 1/2 [65 (fts) 1/2] as our well established THERMO BULB® type F3
XS THERMO BULBS
XS stands for EXTRA STRENGTH. Due to special production methods these bulbs have an axial strength approximately 30% higher than standard bulbs ensuring high safety factors for special applications. The extra strong bulbs can be supplied as G5, F3 and F2.5.