Yes. As with all types of plumbing fittings, new installations of Push-

Fit fttings should be checked to ensure proper connection and

performance一test with water or air on completion and before covering

the pipe. The system should be installed, pressurized and held under

pressure for a period determined by your local and applicable plumbing

regulations.

Yes, but the pipeline will be cleaner and flush easier and faster since

there's no solder and or flux.

No, the O-ring seals in Ailun Push-Fit fttings are pre-lubricated with

certifed lubricant during manufacturing, and hence no additional

lubricant need to be applied. If it is necessary to lubricate the seals in the

fneld, use water. Do not use other grease/lubricants; in particular, don't

use any petroleum based lubricants since they're incompatible with

EPDM rubber.