Check the listing for details. Hydro-Rain 1/2" Blu-Lock Coupler. Condition: New. Listed at 7.43 USD. Hydro-Rain 3X offers a quicker and better way for sprinkler installation. Everything you do from the valve out, you can now do faster and easier with Blu-Lock. With the Blu-Lock system you don't need primer, glue or clamps.*For non-constant pressure valve-out outdoor irrigation connections only.Features: Patented "Push-n-Go" technology is a 100% tool and chemical free approach cutting installation time in half; Patented Quick-Release Collar on 1/2" swing fittings is a quick-release mechanism that allows tool-free removal; Blu-Lock Fittings with outside diameter (OD) technology ensure lower friction loss for better efficiency; Glueless, tool-free installation protects the environment and the long-term health of your crew; Blu-Lock Swing Pipe Coupler is used to connect two sections of 1/2" Blu-Lock swing pipe together.