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A variety of hydraulic pumps is offered for various liquid output pressure up to 33.500 psi (2311 bar). Sprague Products pumps service water, oil and most corrosive chemicals, and are rugged, service-proven and virtually maintenance-free.

The Sprague Products positive-displacement type pump converts air inlet pressure to hydraulic output pressure. The pump uses low pressure air to act on a large area piston to produce high hydraulic pressure with a small area piston.

In operation, the pump reciprocates rapidly until the system liquid pressure nears the desired level, then slows to a stop when the liquid pressure equals or balances the air pressure. This liquid-air pressure balance is maintained indefinitely in a holding condition with minimal energy consumption and with no increase in fluid temperature or parts movement.

In contrast, a motor driven pump in a holding condition must continue to operate to maintain a pressure level. Excess liquid must be bypassed or recirculated back to the reservoir, resulting in energy loss, heat buildup, and the need for bypass components and a larger reservoir.

The Sprague Products pump is efficient in operation and simple in design. Compared to other types of hydraulic pumps, it provides cost effective and energy saving benefits for many industrial and research applications.

HYDROSTATIC TESTING APPLICATIONS; The Sprague Products air driven pump offers economical advantages for the pressure testing of hoses, pipes, valves, fittings and other hydraulic vessels and products. The timesaving and performance advantages offered by these pumps allow routine production testing to be converted from tedious hand-pump methods to automatic and precision testing methods.

PRODUCTION MACHINERY APPLICATIONS; The Sprague Products air driven pump delivers high pressure liquids required by production machinery for holding, clamping, forming, shearing, punching, etc. An application example: a hydraulic press where long holding cycles are necessary or where the work stroke is short and a high force is required. High and low volume pumps can be combined to produce a combination of high speed and high force at low cost.

NO NEED FOR CENTRAL POWER SOURCE; Because Sprague Products air driven pumps are relatively small, they can be installed directly on individual machines or test equipment in separate locations as direct power sources. Pumps so mounted eliminate need for a central power system, long plumbing runs and excess hydraulic power capacity.

SAFE OPERATION; Unlike motor driven pumps. Sprague Products air driven pumps are non-arcing and non-sparking, and can be used safely in hazardous or confined areas.

SIMPLER MAINTENANCE; When compared to other air driven pumps. Sprague Products pumps do the same job, but with fewer parts and seals for simpler maintenance.

How To Order, The letter “S” preceding the basic part number refers to the manufacturer’s name, Sprague Products. The letter or letters following the part number refers to the model configuration

CHART-1
J Standard Air Lubricated
JN Standar Air, Non-Lubricated
JD Double Acting, Lubricated Air
JDN Double Acting, Non-Lubricated Air
JR Standard With Reservoir, Lubricated Air

To order a hydraulic pump or power unit, the nominal ratio of the pump must be determined. Know the liquid pressure and flow requirements of the application, as well as the available air pressure to operate the pump, refer to the Pump Ratio Selection Charts-4 on the next page.

As an example, if the air supply is 100 psi and system requirement is for 1000 psi liquid discharge pressure with a 170 cubic inch per minute flow rate or capacity, the pump nominal ratio indicated on the Chart will be 60:1.

Selection of the 60 pump means that by adjusting the driving air supply at the pressure regulator, the pump will develop any adjusted liquid output pressure up to 1000 psi. Use this pump ratio number as a dash number and add it to the end of the pump model number:

When ordering, specify the liquid service. The standard S-216-J pump has a stainless steel (at no added cost) liquid body and is furnished with nitrite O-rings.

Sprague Products pumps can be furnished with other O-ring materials: Viton®, Neoprene, EPR and other compounds. For questions regarding liquid/seal compatibility, Fluid Dynamics Inc., for recommendations. Specify operating temperature range and any other special conditions applicable.

The “GJC” letter combination is part of the S-218-GJC-( ) pump basic part number. The dash number, -10, refers to the pump nominal ratio. Example:

 


Demininson for drawing above
CHART-5
Ratio A B C1 C2 D/Dia
inlet outlet
10:1 in mm in mm in mm
2-29/32 73.82 2-7/16 61.90 3/8" npt 3/8" npt 3-1/2"

88.86

 

PUMP RATIO SELECTION CHART

NOM Ratio

NOM Ratio

DISP. PER STORCK CU. In

 Liquid Discharge pressure - PSI
0 250 500 750 1000 1500 2000 3000 4000 5000 7500 10M 15MM 20M 30M
CAPACITIES - CUBIC INCHES PER MIN APPROXIMATE
10:1 1000 3.26 4.85 560 484 324                      

 

PUMP DATA AND ORDER INFORMATION
PUMP #

REF #

 OUTPUT AIR INLET LIQUID ACTUAL WEIGHT SHIPPING WEIGHT PRICE
PSI BAR INLET OUTLET LBS KG LBS KG  
S-216-10 72293-11 1000 69 1/2" 1/2" 3/8" 16.4 7.4 19 8.6  

HIGH PRESSURE HAND PUMP: Part Number S-525-() This single-acting, piston type hand pump is ideal for hydrostatic testing that require low volumes at high pressures.
The pump’s stainless steel liquid body assembly (wetted section) is identical to and interchangeable with the liquid body assembly in the S-216-J-( ) standard pump, so the hand pump will service water, oil and most corrosive chemicals.
Directional control of the liquid through the pump is maintained through the inlet and outlet soft seat, zero leakage, check valves. The pump is 7 inches high. The handle extends twenty-four inches.
The pump has two threaded mounting holes provided on the underside of the liquid body. The -35, -60 and -100 pumps may be installed below or no more than two feet above the liquid source. The -150, -200 and -300 pumps must be installed with the pump inlet below the liquid source.

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