Leybold Blower Vacuum Gauge Adapter, KF-16 to M16x1.5mm Thread.
Leybold Part number 16840V01.
This Leybold Blower Vacuum Gauge Adapter, Fits WA/WAU & WS/WSU 151, 251, 501, 1001, & 2001 Blowers - Screw Coupling DN 16 KF to M16x1.5 mm Thread. Leybold Part number 16840V01.