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S-D Series Liquid Pumps - Pressures From 105 to 14,500 PSI

S-D pumps are compact and lightweight and are designed for simple installation in both static and portable applications. Available in five pressure ratios, S-D pumps are ideal for high flow applications. The S-D pumps are the double acting version of the S pumps.

  • S-D pumps are double acting, single air drive head types.
  • Cast iron bodies, carbon steel plungers and polyurethane seals.
  • All S-D pumps are standard with side inlets only.
  • There are two inlets (same side) and two outlets (same side).
  • Maximum air drive pressure 145 psi.
  • Minimum air drive pressure 15 psi.
  • For air control option ... add – ACP to catalog number.
  • All S-D pumps come with an unregulated pilot port, 1/8" FNPT, in the top cap. This feature provides more accurate pressure control and is an ideal location for control instrumentation.

S-D Series Pump  S-D Series Dimensions

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CATALOG NUMBER
A
B
C
S15-D
6.63
3.69
7.88
S25-D, S35-D
6.06
3.00
7.19
S60-D, S100-D, S250-D
7.81
4.06
8.25
 

CATALOG
NUMBER

PRESSURE
RATIO

MAXIMUM OUTLET
PRESSURE
(PSI)

DISPL . PER CYCLE (IN.3)
CONNECTIONS
WEIGHT (LBS)
INLET
OUTLET
S15-D 1:16 2,320 3.45 3/4 1/2 32
S25-D 1:24 3,480 2.39 1/2 1/2 32
S35-D 1:38 5,510 1.54 1/2 1/2 32
S60-D 1:60 8,700 0.98 1/2 1/2 32
S100-D 1:107 14,500 0.55 1/2 1/2 32
S250-D 1:250 15,000 0.24 1/2 3/8 32
NOTE: Air drive inlet connection on all S-D pumps is 1/2" FNPT.
All connections listed are FNPT unless otherwise noted.
Maximum allowable oil temperature is 140°F.
Air section temperature rating: 0°F to 140°F.

CATALOG
NUMBER

SAMPLE
AIR DRIVE PRESSURE
(PSI)

OUTLET PRESSURE (PSI) Above 35,000 psi for intermittent duty only
0
500
1000
1500
2000
3000
4000
5000
7500
10000
S15-D
60
90
1050
1075
650
900

520
             
S25-D
60
90
715
730
575
660
280
530

340

90
         
S35-D
60
90
455
465
405
440
315
400
205
345
75
280

90
       
S60-D
60
90
285
290
270
285
240
270
210
265
160
235
60
185

120

40
   
S100-D
60
90
160
165
153
163
147
157
141
154
130
150
110
140
80
126
50
111

60
 
S250-D
60
90
70
72
69
71
68
70
67
69
66
68
63
67
62
66
60
66
50
62
38
56

FLOW RATE IN CUBIC INCHES PER MINUTE.

FLOW RATES SHOWN ARE FOR 1-10 CST FLUIDS

MAXIMUM AIR CONSUMPTION FOR S PUMPS: 33 SCFM @ 90 PSI (WITH 0 PSI OUTLET).