Conical flange with flat ground bottom to allow the head to sit flatly on a reaction kettle or flask. Fourth port is a #7 internal thread with nylon bushing to permit a thermometer to be inserted vertically to the bottom of the vessel.
Unit of Measure
Items
qra-3

QRA-3 Reaction Head, Four-Neck
List Price $342.70

qra-3

QRA-3 Reaction Head, Four-Neck
List Price $344.30

qra-3

QRA-3 Reaction Head, Four-Neck
List Price $358.40

qra-3

QRA-3 Reaction Head, Four-Neck
List Price $490.30

qra-3

QRA-3 Reaction Head, Four-Neck
List Price $500.40
Flange N/A 100 mm N/A 100 mm N/A 100 mm N/A 150 mm N/A 150 mm
Center Neck N/A 24/40 N/A 29/42 N/A 35/25 N/A 24/40 N/A 29/42
Side Necks N/A 24/40 N/A 24/40 N/A 35/25 N/A 24/40 N/A 24/40