Application:



Yacht / RV/Caravan pressurized water system,
Sprayer fixtures (Vehicle-mounted sprayers, electric sprayer)
Clean machine, Humidifier, Water purification, Medical apparatus
Food beverage filling & liquid transfer,
Any other pressurization system

Features:



Amarine-made DC Diaphragm pump is specially made for RV/MARINE Yachts and any other pressurization system. All Amarine-made pumps have been strictly tested and inspected by QC department to guarantee proper operation. The patented design delivers smooth,consistent flow at all ranges of operation, while drawing low current. The balanced motor design incorporates precision ball bearings for long life, motor is equipped with an integral thermal breaker. All marine duty pumps have sealed switches and are finished with a Electro Coating to inhibit corrosion. Marine duty fresh water pumps are enclosed to prevent incidental moisture from entering and when installed correctly, Marine Duty Fresh Water Pumps provide years of quiet operation. A Amarine-made pump in combination with a low backpressure water system can exceed all expectations.


Functions:



a) Motor Voltage: 12V DC
b) Max Flow rate: 18.9lpm (5.0gpm), c) Max Pressure: 60psi (4.2bar), d) SFS51-01inlet strainer for your choice. Inlet/Outlet fitting: 13mm pyramid hose barb, 1/2 NPT thread fitting for your choice.
e) Protection: pressure switch protection: pressure-off protection or circumfluence switch protection. For the powered control you can choose pump without pressure protection.
f) Duty Cycle: Intermittent (under different pressure the continuous working time will also be different)
  • The patented design delivers smooth,consistent flow at all ranges of operation, while drawing low current.
  • The balanced motor design incorporates precision ball bearings for long life, motor is equipped with an integral thermal breaker.
  • All marine duty pumps have sealed switches and are finished with a Electro Coating to inhibit corrosion.
  • Marine duty fresh water pumps are enclosed to prevent incidental moisture from entering and when installed correctly, Marine Duty Fresh Water Pumps provide years of quiet operation.
  • A Amarine-made pump in combination with a low backpressure water system can exceed all expectations.

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Amarine-made 12v Water Pressure Diaphragm Pump 18.9 L/min 5.0 Gpm 60 Psi - Caravan/rv/boat/marine

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Dynamic Head

The effect of the Earths gravity on the "lift" or head pressure is fairly simple; for every vertical foot of distance the pump moves the water you are adding one foot of head pressure so the ratio is a 1:1 ratio. The effects of the friction, caused by water as it travels through your hose or pipes, on the total head pressure is a little more difficult to calculate especially as there are slight variations in pipe friction in different hose materials and the smoothness of the inner bore. Basically. for every ten feet of pipe through which the water has to travel travel horizontally will contribute 1 foot of head height; the ratio of the pipe friction loss is a 10:1 ratio.

Plumbing fixtures and bends and corners in your hose also increase the total head you must calculate to ensure the proper final volume from your pump. Every corner with a 90 degree elbow in your plumbing will add 1 foot of head pressure  with a 1:1 ratio. 45 degree elbows, tees and even insert couplers can all have an impact on the final flow.

If you install a pump 40 feet away from the top of your waterfall which is 6 feet above the pump and the tubing is a single run of 40 feet horizontally then you add 4 feet of head for the tubing length (the 10:1 ratio) to the 6 foot differnetial between the pump location and the final height of the waterfall so your final total dynamic head calculation would be 10 feet. This means your final volume of water flow in this water feature or application would be the volume of flow on the performance curve that equaled the gallons per hour at 16 feet. This volume will certainly be much less than the initial volume the pump can move at an open flow or a zero head.

If in the above example your 40 feet of horizontal tubing run also required 3 elbows of 90 degrees then an additional 3 feet of theoretical head would be added and your final flow result would be at 19 feet on the performance curve of the pump. In this example you would want to choose a pump that has the desired GPH rating at 9 feet of head pressure.  Tubing size is also an important factor in accounting for head pressure loss, in general you should never reduce the diameter of the tubing below what the output size of the pump is, this will drastically increase head pressure, and reduce pump performance.  For maximum pump performance, using the largest tubing that is practical is the best choice. A best practice is to use a hose with an inner diameter that is the same as your pumps outlet fitting.