STOW SDP-2/SDP-3 — GENERAL INFORMATION

APPLICATION

The STOW Model SDP-2 and SDP-3 diaphragm pumps are designed to be used for de-watering applications. The suction and discharge ports on the SDP-2 use a 2-inch diameter opening, which allows the pump to pump at rate of approximately 3,000 gallons/hour (gph) or 11,340 liters/hour (lph). The suction and discharge ports on the SDP-3 use a 3-inch diameter opening, which allows the pump to pump at rate of approximately 5,100 gallons/hour (gph) or 19,320 liters/hour (lph).

Diaphragm pumps use a positive displacement design rather than centrifugal force to move water through the casing. This means the pump will deliver a specific amount of flow per stroke, revolution or cycle. These pumps are commonly referred to as mud hogs, mud hens and mud suckers.Their names reflect their popularity for use in applications where shallow depths and slurry water render centrifugal pumps ineffective

Power Plant

These diaphragm pumps are powered by an 4.0 horsepower air cooled, 4-stroke, single cylinder HONDA GX-120gasoline engine that incorporates a low "Oil Alert Feature" .The drive shaft of the engine is coupled to an offset connecting rod that is coupled to a flexible diaphragm. The connecting rod alternately raises (expands) and lowers (contracts) the diaphragm at a rate between 40 and 65 strokes per minute depending on engine speed.

Oil Alert Feature

In the event of low oil or no oil, the HONDA GX-120 engine has a built-in oil alarm engine shut-down feature. In the event the oil level is low the engine will automatically shut-down.

Suction Lift

This pump is intended to be used for dewatering applications and is capable of suction lifts up to 25 feet at sea level. For optimal suction lift performance keep the suction hose or line as short as possible. In general always place the pump as close to the water as possible.

Pump Support

The pump should always be placed on solid stationary ground in a level position.

NEVER place the pump on soft soil. The suction hose or pipe connection should always be checked for tightness and leaks. A small suction leak in the hose or fittings could prevent the pump from priming.

Elevation

Higher elevations will effect the performance of the pump. Due to less atmospheric pressure at higher altitudes, pumps DO NOT have the priming ability that they have at sea level. This is due to the “thinner air” or lack of oxygen at higher altitudes.

A general rule of thumb is that for every 1,000 feet of elevation above sea level a pump will lose one foot of priming ability.

For example, in Flagstaff, Arizona where the elevation is approximately 7,000 feet, the pump would have a suction lift of only 18 feet rather than the 25 feet at sea level. Table 3 shows suction lift at various elevations.

Table 3. Suction Lift at Various Elevations

Altitude

 

 

Suction Lift in Feet (Meters)

 

 

Feet (Meters)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sea Level

10.0 (3.048)

 

15.0

(4.572)

20.0 (6.096)

 

25.0 (7.620)

 

 

 

 

 

 

 

 

 

 

2,000 (610)

8.80

(2.680)

 

13.2

(4.023)

17.6

(5.364)

 

22.0 (6.705)

 

 

 

 

 

 

 

 

 

 

 

4,000 (1,219)

7.80

(2.377)

 

11.7

(3.566)

15.6

(4.754)

 

19.5

(5.943)

 

 

 

 

 

 

 

 

 

 

 

6,000 (1,829)

6.90

(2.103)

 

10.4

(3.169)

13.8

(4.206)

 

17.3

(5.273)

 

 

 

 

 

 

 

 

 

 

8,000 (2,438)

6.20

(1.889)

 

9.30 (2.834)

12.4

(3.779)

 

15.5

(4.724)

 

 

 

 

 

 

 

 

 

 

10,000 (3,048)

5.70

(1.737)

 

8.60 (2.621)

11.4

(3.474)

 

14.3

(4.358)

 

 

 

 

 

 

 

 

 

 

 

Table 4 shows percentage drops in performance as elevation increases.

Table 4. Performance Loss at Various

Elevations

Altitude

Discharge Flow

Discharge Head

Feet (Meters

 

 

 

Sea Level

100%

100%

 

 

 

2,000 (610)

97%

95%

 

 

 

4,000 (1,219)

95%

91%

 

 

 

6,000 (1,829)

93%

87%

 

 

 

8,000 (2,438)

91%

83%

 

 

 

10,000 (3,048)

88%

78%

 

 

 

PAGE 12 — STOW SDP-2 / SDP-3 DIAPHRAGM PUMP — PARTS MANUAL — REV. #2 (12/16/03)

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Stow manual Stow SDP-2/SDP-3 General Information
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SDP-2, SDP-3 specifications

The Stow SDP-3 and SDP-2 are advanced storage and retrieval systems designed to enhance warehouse efficiency and streamline operations. With their state-of-the-art technology and robust features, these systems cater to various industries, from e-commerce to pharmaceuticals, providing reliable handling of goods and optimizing space utilization.

The Stow SDP-3 is equipped with a high-density storage solution that maximizes vertical space, allowing for greater storage capacity within the same footprint compared to traditional shelving units. Its modular design can be easily adapted to changing inventory needs, making it an agile choice for businesses looking to scale operations. The SDP-3 can utilize various storage methods, including FIFO (First In, First Out) and LIFO (Last In, First Out), accommodating diverse product types.

On the other hand, the Stow SDP-2 offers similar benefits but focuses on smaller, less intensive operations. It is designed to be lightweight and easy to assemble, making it suitable for businesses just beginning to automate their logistics processes. The SDP-2 integrates seamlessly with existing warehouse management systems, enabling real-time inventory tracking and management.

Both systems leverage advanced technologies, such as automated guided vehicles (AGVs) and robotics, to enhance the picking and storage process. These technologies reduce manual labor costs and minimize the risk of human error, ensuring a more efficient operation overall. Furthermore, the SDP series features integrated safety systems, ensuring that both equipment and personnel can operate in a secure environment.

Key characteristics of the Stow SDP systems include their design adaptability, durability, and low maintenance needs. They are constructed from high-quality materials, ensuring longevity even in high-traffic environments. The systems also allow for easy customization, enabling users to configure the layout and specific components to fit their unique requirements.

In conclusion, the Stow SDP-3 and SDP-2 stand out as top choices for modern warehouse solutions. Their combination of space efficiency, ease of use, and advanced technologies makes them invaluable for businesses aiming to enhance their operational capabilities while reducing costs. As automated solutions continue to evolve, the SDP series remains at the forefront of warehouse innovation.
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