ASTM F610/F610M-21 pdf free download.Standard Practice for Evaluating the Quality of Molded Poly(VinyI Chloride) (PVC) Plastic Pipe Fittings by the Heat Reversion Technique.
1 .1 This practice covers a procedure for evaluating the quality of molded poly ( vinyl chloride ) ( PVC ) plastic pipe
fittings after exposure to heat
1.2 Units-The values stated in either inch-pound or units are to be regarded separately as standard . The values
stated in each system may not be exact equivalents ; therefore each system shall be used independently of the other Combining values from the two systems may result in non conformance with the standard
4 . Apparatus
4 . 1 Circulating Air Oven , thermostatically controlled , capable of operating at 302F + 6F or [ 150C + 3C ] such
that after insertion of the fittings to be tested the test temperature is regained within 15 min or less . ( See Annex A) .
NOTE 4-The oven should be vented to the outside of the building
5 . Conditioning
5.1 A specific conditioning period is not required although the fitting shall be at room temperature . This test can be
performed on a particular fitting any time after it has been produced
6 . Procedure
6.1 Select the fittings to be tested and examine them for the following , making proper notation for the report :
6.1.1 The condition and appearance of both inner and outer urfaces of the fitting ,
6.1.2 The condition and appearance of the weld lines and areas adjacent to them
6.1.3 The condition and appearance of the gate and area adjacent to it , and
6.1.4 The condition and appearance of the internal surface opposite the gate and gate area
6.2 Place the fittings to be tested in the oven so that each fitting stands on one of its socket entrances and with sufficient separation between individual specimens so that the hot air can flow freely between them.
6.2.1 When the fitting being tested has a body and branch wall that falls within two different exposure times . two fittings shall be tested . One will be tested using the lower exposure time , and the other will be tested using the longer exposure time
6.3 Allow the fittings to cool to room temperature naturally in the air . When cool enough to handle examine them for the following , making proper notation for the report
6.3.1 The condition and appearance of both inner and outer surfaces of the fitting .
6.3.2 The condition and appearance of the weld lines and areas adjacent to them,
6.3.3 The condition and appearance of the gate and area Adjacent to it.ASTM F610/F610M pdf download.