Our Quick-Stop Luer Check Valve Assembly is specifically designed to provide inline luer connect/disconnect convenience while avoiding spills. It offers Check Valve protection with Luer convenience. The check valve is automatically open once the luer connection is engaged, allowing flow in either direction. Disconnecting the luer union causes the check valve to close. It is made from biocompatible PEEK with gold-plated stainless steel spring Check Valve includes (1) P-697 Quick-Stop Luer Check Valve and (1) P-655 Adapter.