With a serrated hose connection (10mm, O.D.) at left hand side. Main tube is 22mm O.D. and the distance between valves is 100mm center to center.

General purpose manifold with 2mm or 4mm Teflon stopcocks. Main tube is 22mm O.D. with serrated hose connection (10mm O.D.) at right side. Delivery ports have 10mm serrated hose connections. Distance between stopcocks is 75mm.

With 4mm double oblique, high vacuum solid stopcocks precision ground with corresponding numbers on barrel and plug. Solid stopcocks have constant pressure retention devices. Beams are 22mm O.D. with front-left-right and rear-left 10mm hose connections. Distance between stopcocks is 75mm center to center.

With 4mm double oblique, high vacuum hollow stopcocks precision ground with corresponding numbers on barrel and plug. Lower vacuum chambers on stopcock are evacuated with a separate hole in the plug in order to hold the plug in the stopcock barrels. Beams are 22mm O.D. with front-right and rear-left-right 10mm hose connections. Distance between stopcocks is 75mm center to center.