Move water from your well or cistern to your holding tank easily with this Red Lion Premium Shallow Well Jet Pump. This dynamic, cast iron pump is perfect for wells up to 25' deep, and will certainly run reliably for seasons of use. Its rugged casing creates a hardy unit, while the attached, factory preset pressure switch operates the pump between 30 and 50 PSI. It also automatically shuts off if the pressure increases too much, protecting the pump from damage. The sturdy, threaded inlet accepts 1 1/4" NPT pipe, which may be increased to 1 1/2" NPT pipe if farther away from the water. The top outlet accepts 1" FNPT pipe, and can be directed to a service line or water tank. This robust, single phase motor can be used with either 115 or 230 volt power sources, and the glass filled, thermoplastic impeller keeps water moving efficiently. Prime the unit prior to first use, to protect it, and the 1 horsepower, 3450 RPM motor will run faithfully for all your in home watering needs. Bring water from your well to your home with this Premium Shallow Well Jet Pump. Three year limited warranty.

Model Number: RJS-100-PREM
Dimensions: 16"L x 8.5"W x 9"H
Inlet: 1 1/4" NPT pipe
Discharge: 1" FNPT pipe
Maximum Flow: 23.2 gpm
Water Depth: up to 25'
Power: 1 hp, 17.6 or 8.8 amps
Voltage: single phase, 115 or 230 volts
Construction: cast iron, plastic
Mfg. Warranty: 3 year limited warranty
  • Premium shallow well jet pump is able to handle the water demands of large homes, cottages, and farms
  • Rugged cast iron casing designed for years of service and reliability
  • Heavy-duty dual voltage (115/230 Volt) motor features capacitor for increased starting power
  • Includes factory pre-set 30/50 pressure switch and can produce up to 50 psi with automatic shut-off
  • Glass-filled thermoplastic impeller and diffuser allows for superior performance and efficient water flow

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Red Lion RJS-100-PREM 602208 Premium Cast Iron Shallow Well Jet Pump

  • $590.00
  • $503.67


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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.