IS 9972 Compressive Strength Test of AUTOMATIC SPRINKLER HEADS FOR FIRE PROTECTION Heat Sensitive Element of bulb type_Other

Other

IS 9972 Compressive Strength Test of AUTOMATIC SPRINKLER HEADS FOR FIRE PROTECTION Heat Sensitive Element of bulb type

Date：2025-06-03 Source：United Test Views：100

Compressive Strength Test of AUTOMATIC SPRINKLER HEADS FOR FIRE PROTECTION Heat Sensitive Element of bulb type IS 9972.

The results of the assembly load test, 6.15.2, shall form the basis for calculating the upper tolerance limit of the sprinkler assembly load. The lower tolerance limit for bulb strength shall be determined using the results obtained from subjecting a minimum of 25 sample bulbs to an increasing load until the bulbs fail.

Each test shall be conducted with the bulb mounted in hardened steel inserts with seating surfaces having dimensions which conform to the actual mating components of the sprinkler. The inserts shall have a hardness within the range rockwell C 38-50 (see Fig.3). They shall be provided by the manufacturer each time the test is specified. The load shall be applied at a rate of compression not exceeding 1 .25 mm/min. The results obtained from the two sets of data shall be utilized for the tolerance limit calculations.

Previous：AS 1851 Test machine of fire protection systems and equipment AUTOMATIC SPRINKLER HEADS Next：TCVN 6148 Thermoplastic Pipes Longitudinal Reversion Test Apparatus (PF Heat Reversion Test equipment)