Yes. However, it is important to remember that a higher temperature will reduce the maximum allowable pressure of polypropylene CAMLOCK couplings. A rise in temperature to 70°C results in a 40% drop in pressure.
For example, 3” CAMLOCK coupling made of polypropylene has the maximum allowable pressure of 4 bar at 20°C, but at 70°C the maximum allowable pressure is 2,4 bar.