NEW 12V Self-Priming Water Pressure Pump 5.0 Gallons/Min (20.0 LPM) 60 PSI INCLUDED: -(1) Diaphragm Pump -(1) Set of Instructions -(2) 1/2" Barbed Hose Adaptors -(1) 50 Mesh Inlet Strainer Product Details: This product is 100% brand new and comes in original color packing Powerful automatic pressure pump 5.0 Gallons Per Minute (20.0 LPM) capacity flow, and 60 PSI pressure Extremely efficient, very low current draw and offer high capacity output Self priming Smooth, silent operation Can run dry without damage Thermal overload and ignition protection Built-in Check Valve Easy connecting system Low power draw Soft rubber mounts Professional grade pump - Ideal for marine, caravans/RV, and agriculture applications Beware of inferior non-genuine products on the market that claim to be just as good Specifications VOLTAGE: 12 VDC DIMENSIONS: 8.25" X 5.30" X 6.0" INLET/ OUTLET: 1/2" Threaded NPT (1/2" Barbed Hose Adapters Also Included) FLOW RATE: 5.0 GPM/ 20.0 LPM AMPS: 8.0 (17.0 Max. Amps) SHUT-OFF PRESSURE: 60 PSI/ 4.2 BAR APPROVALS: CE RV AUTOMATIC DEMAND PUMP QUIET PERFORMANCE SELF PRIMING EASY INSTALLATION RUNS DRY WITHOUT DAMAGE BUILT-IN CHECK VALVE FITTINGS INCLUDED FOR 1/2 HOSE Applications -Yacht/RV/caravan pressurized water system -Sprayer fixtures (vehicle-mounted and electric sprayer) -Clean machine, humidifier, water purification and medical apparatus -Food beverage filling and liquid transfer -Any other pressurization system
- 12v 5.0 Gallons/Min (20.0 LPM) 60 PSI. Ideal for marine, caravans/RV and agriculture
- 1 Diaphragm Pump, 1 Set of Instructions, 2 1/2" Barbed Hose Adaptors, 1 50 Mesh Inlet Strainer
- This product is 100% brand new and comes in original color packing.
- Extremely efficient, very low current draw and offer high capacity output, Self priming
- Smooth, silent operation, can run dry without damage, thermal overload and ignition protection
SeaFlo High Pressure Marine Water Pump 12 V DC 60 PSI 5.0 GPM on demand
- Brand: Sea Fresh Marine
- Product Code: B00VS270FM
- Availability: 20
Dynamic HeadThe 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.