- Brass construction provides long service life
- Instant closure on reverse flow check valves
- Spring-loaded locking mechanism responds to fingertip action and achieves a gas-tight connection
- Double seal socket connection on second seal
- QUICK CONNECT SET, REGULATOR TO HOSE WITH CHECK VALVES, B-SIZE 9/16"-18, INCLUDES QDB31 & QDB32
- QUICK CONNECT SET
