Flat flange with flat ground bottom to allow the head to sit flatly on a reaction kettle or flask. Fourth joint is a 10/30 outer joint to permit a thermometer to be inserted vertically to the bottom of the vessel.
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Items
qra-7

QRA-7 Reaction Head, Four-Neck
List Price $430.04
qra-7

QRA-7 Reaction Head, Four-Neck
List Price $432.12
qra-7

QRA-7 Reaction Head, Four-Neck
List Price $450.45
qra-7

QRA-7 Reaction Head, Four-Neck
List Price $621.92
qra-7

QRA-7 Reaction Head, Four-Neck
List Price $635.05
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