
Technical Data
Category
Model 239140 SST Pres-
ident
Model 223596 CST
Monark
Model 237958 SST
Monark
Ratio
Maximum fluid working pressure
Maximum air input pressure
Fluid flow at
60 cycles per minute
Maximum pump operating temperature
46:1
4600 psi
(32 MPa, 317 bar)
100 psi
(0.7 MPa, 7 bar)
0.55 gpm
(2.1 liters/min)
180_F (82_C)
23:1
2760 psi
(19 MPa, 190 bar)
120 psi
(0.8 MPa, 8 bar)
0.4 gpm
(1.5 liters/min)
180_F (82_C)
23:1
3450 psi
(24 MPa, 238 bar)
150 psi
(1.0 MPa, 10 bar)
0.4 gpm
(1.5 liters/min)
180_F (82_C)
Weight
Wetted parts
approx. 24 lb (11 kg)
AISI 304, 316, 440C, and 
approx. 24 lb (11 kg)
carbon steel; AISI 304, 316, 420, 440C, and 
approx. 24 lb (11 kg)
AISI 304, 316, 440C, and 
Sound Pressure Levels (dBa) (measured at 1 meter from unit)
  | Input Air Pressures at 15 cycles per minute | ||
  | 
  | 
  | 
  | 
Air Motor  | 40 psi (0.28 MPa, 2.8 bar)  | 70 psi (0.48 MPa, 4.8 bar)  | 100 psi (0.7 MPa, 7 bar)  | 
  | 
  | 
  | 
  | 
President  | 73.6 dB(A)  | 78.3 dB(A)  | 80.9 dB(A)  | 
  | 
  | 
  | 
  | 
Monark  | 62.6 dB(A)  | 62.5 dB(A)  | 63.9 dB(A)  | 
  | 
  | 
  | 
  | 
Sound Power Levels (dBa)
(tested in accordance with ISO 9614–2) 
Air Motor
Input Air Pressures at 15 cycles per minute
40 psi (0.28 MPa, 2.8 bar)  | 70 psi (0.48 MPa, 4.8 bar)  | 100 psi (0.7 MPa, 7 bar)  | 
  | 
  | 
  | 
President  | 87.4 dB(A)  | 92.1 dB(A)  | 94.6 dB(A)  | 
  | 
  | 
  | 
  | 
Monark  | 69.5 dB(A)  | 70.7 dB(A)  | 71.0 dB(A)  | 
  | 
  | 
  | 
  | 
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