Blu-Lock™ is the cleanest, fastest, most reliable way to build and maintain an environmentally-friendly, professional sprinkler system. With the revolutionary push-and-go design, simply insert pipe into fitting to create a secure, leak-free connection. No Clamping, No Gluing, No Waiting. Compatible with Hydro-Rain® and Eco-Lock® push fittings and pipe. WARNING: For non-mainline cold water outdoor irrigation connections only. Do not insert fingers Eliminates the need for glue, primer and clampsPatented “Push and Go” design is up to 70% faster than traditional PVC and Poly SystemsHeavy-Duty with a 220 PSI Burst Pressure