User's Manual

Models
311831E 3
Models
NXT Air-Powered Pumps
Your model number is marked on the pump identification plate located toward the rear of the air motor. To determine
the model number of your pump from the following matrix, select the six digits which describe your pump. The first
digit is always J for circulation pumps. The remaining five digits define the construction. For example, a circulation
pump with stainless steel construction, a 3.3:1 ratio, low noise exhaust, no communication option, npt fittings, and
Chromex rod and chrome cylinder is model number JS33L1. To order replacement parts, see page 17.
Viscount II Hydraulic-Powered Pumps
J S33 L1
First
Digit
Second
Digit Third and Fourth Digit
Fifth Digit Sixth Digit
Material
Motor
Size
Lower
Size
Maximum
Fluid Pressure
psi (MPa, bar) Exhaust
Communi-
cation Fittings Rod Cylinder
J
(all
circulation
pumps)
C Carbon
Steel
33 6500 4000 330 (2.3, 23) L Low
Noise
none 1 npt Chromex Chrome
S Stainless
Steel
44 6500 3000 440 (2.8, 28) M Low
Noise
DataTrak
™
3 bspp Chromex Chrome
60 6500 2000 500 (3.4, 34) R Remote none
S Remote
DataTrak
™
XX = X.X:1 ratio
Model No. Series
Maximum Pump
Working Pressure
psi (MPa, bar)
Connection
Style Material
Rod
Material
Cylinder
Material
High-Flo Lower
(see manual 311832)
243741 C 400 (2.8, 28) npt CS Chromex Chrome 243732
243742 C 300 (2.1, 21) npt CS Chromex Chrome 243733
243753 C 400 (2.8, 28) npt SST Chromex Chrome 243735
243754 C 400 (2.8, 28) bspp SST Chromex Chrome 243735
243755 C 300 (2.1, 21) npt SST Chromex Chrome 243736
243756 C 300 (2.1, 21) bspp SST Chromex Chrome 243736