7
Model A B C D E
Mounting
Screws
4021 -
4024
5.12 in
(130 mm)
2.52 in
(64 mm)
1.50 in
(38 mm)
2.60 in
(66 mm)
0.63 in
(16 mm)
8–32 UNF
4121 -
4122
3.67 in
(93 mm)
1.93 in
(49 mm)
1.11 in
(29 mm)
2.60 in
(66 mm)
0.43 in
(11 mm)
6–32 UNF
Inlet / Outlet Connections
Models equipped with male 22 mm ISO tapered, 0.25 inch,
0.375 inch, 0.75-inch straight inlet/outlet:
• Connections can be made with flexible tubing slipped over
the male ends of the inlet / outlet.
• Connections can also be made with an appropriate
compression fitting, such as those made by Swagelok
®
and
Parker Hannifin
®
. We recommend that you use nylon
compression fittings and not metal. Metal fittings put too
much stress on the flowmeter inlet / outlet stubs and can
crack them.