For use with QCH-3 and QCH-10. Top outer joint is 24/40 to be used in conjunction with flow control adapter.

For use with QCH-5 and QCH-11. To be used in conjunction with a flow control adapter. Top outer joint is a 35/20 socket.

For use with QCH-8 and QCH-3.

For use with QCH-9 and QCH-5