APPLE VALLEY, Minn. — A significant number of all pipe connections on commercial job sites are composed tees. Taking the time to create these tees increases labor costs, undercutting installation ...

The listing is to UL 1821, Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service It approves (with certain limitations) the use of flexible AquaPEX tubing and ProPEX expansion fittings ...

With labor inefficiencies and rework being two of the biggest issues affecting the industry, offsite construction continues to be the best solution.