Removal and transfer of water:
---feel it
---pumps
---dishes showers
---spare time
---Industries
---All the little use and decanting

Typical Applications

Marine/RV
Water Treatment
Beverage/Food Service
Distillation Equipment
Agricultural Spraying
General Industrial
Automotive

About SAILFLO Company :
SAILFLO is dedicated to offering solution for Yacht/Boat,RV
SAILFLO has specialized in research ,design and manufacturing multiple micro diaphragm water pump,Bilge pump, Washdown kit,Agricultural sprayer and Garden tools etc more than 10 years.
Quality is first, SAILFLO pumps had been approved with the CE and RoHs international Certificate.
We are devoted to develop excellent products to meet customers' demand.

SAILFLO ---Car Power Inverter 500W,1000W,2000W,3000W,4000W.
SAILFLO ---Bilge Pump 350GPH,500GPH,600GPH,1100GPH,2000GPH,3700GPH.
SAILFLO---Diaphragm water pump ,Various Pressure & Flow
SAILFLO--- Surfing Equipment

  • Model GPH750 Technical Date : Volt : 12V , Flow: 750 gallons/hour, Amp Max : 3A. Outlet Dia. ⌀ 19 mm -3/4" , Dimension :145x103(5.71x4.05inch) ,Max Lift 230ft, max Submersion-100ft, Leads-3Ft. 16AWG, Max. recommended discharge head 4m
  • All-in-one pump & switch - No float switch required,Pump turns on when water level rises & shuts off when water is removed
  • Typical Uses: Suitable for hydraulic systems fed with cold water-used in line to be fed by gravity or pressure, Ideal For Fishing Boats, Cruisers, Runabouts, Yachts, Etc.
  • Electrical Characteristics : Runs continuously,Submarine pond with Cabling 6" (1.8m) standard.Body pumps high strength nylon,Snap-mounting of the pump on the swivel base
  • Can be used with switch panel for manual override. Can not be used to pump oil - otherwise the pump will not work

Write a review

Note: HTML is not translated!
    Bad           Good

SAILFLO Automatic Bilge Submersible Pumps 12V DC All-in-one Marine Bilge Pump 4 Year Warranty Boat Auto Yacht RV (750GPH)

  • Brand: SAILFLO
  • Product Code: SAIL-GPH-AUTO
  • Availability: 20
  • $41.99


Available Options



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.