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Welcome back to Inspector Pumphead Recommends! In this feature, I will be recommending a specific pump model and highlighting the features, specifications, and benefits of this pump. It could be a new product, a best seller, a seasonally appropriate pump or one that is strongly recommended by the application engineers. Let's dive in! Goulds J7S Shallow Well Pump Today I am highlighting the Goulds J7S Shallow Well Pump. This popular Jet Pump is our best-selling jet pump and is known for top notch construction, efficiency, versatility, and consistent performance. The Goulds J7S is built to draw water from a water table no more than 25 ft. underground. This pump can typically be found in homes, farms, and cottages, as well as in booster applications. Construction The defining feature of the Goulds J7S is the integral shallow well adapter that is built into the casing, removing the need for a separate shallow well adapter. This makes the pump compact and relatively easy to install. This Shallow Well Jet Pump is also easy to maintain. The motor is divided into two compartments for easy access to the wiring and replaceable components while a back pullout design allows the user to access the pump components without disturbing the surrounding piping. The engineered plastic tubing and fittings can also be easily removed for cleaning or examination. The pump case includes a nozzle clean out plug. The volute is cast iron with an electro-coated paint process that is applied to the interior and exterior and then baked on for corrosion resistance. The impeller is FDA compliant, glass filled Noryl and is both corrosion and abrasion resistant. The bolted down diffuser guide vane ensures positive alignment with the impeller. The mechanical seal's special diaphragm design retains water in the casing so the seal itself never runs dry. The Goulds J7S is powered for continuous operation and is self-priming after the initial prime. This basic pump package includes the close-coupled pump/motor, a AN018 nozzle, a AD3336 venturi, and a AS4 pressure switch. The pressure switch is preset to 30-50 PSI. Specs Pump Discharge Suction HP Volt Ph. Lift PSI GPM J7S 1 ¼” NPT 1" NPT 3/4 115/230 1 5' 30  21.3 5' 40  18.3 5' 50  12.5 5' 60  6.6 10' 30  18.8 10' 40  17.3 10' 50  11.3 10' 60  5.0 15' 30  16.4 15' 40  15.5 15' 50  9.6 15' 60  3.7 20' 30  13.6 20' 40  13.2 20' 50  8.3 20' 60  2.0 25' 30  10.0 25' 40  9.9 25' 50  6.4 25' 60  1.0 Dimensions  LITERATURE Goulds J7S Brochure Goulds J7S Installation Manual Goulds J7S Repair Parts List PumpProducts.com application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.

Welcome to Inspector Pumphead’s Frequently Asked Questions! I will be answering some of the most common questions we get on a specific topic. Some of this information may also be available elsewhere, but this feature will serve as a convenient one-stop source. In this edition, I'll talk about well pumps. Well Pump FAQ 1. Why are there two different types of well pumps listed What’s the difference between ‘jet’ and ‘submersible’ Jet well pumps are surface pumps configured above the well system, while a jet assembly system (twin pipe or Packer depending on the application) is inserted into the well shaft. The main components of a jet pump are a nozzle, venturi and the jet itself. The physics and mechanics of it are interesting, but we’ll focus on the basics here: these components work together to create a vacuum above the water, which allows atmospheric pressure underneath to push the water upwards. Jet pumps can be either horizontally or vertically configured and are much the same size and shape as other pumps. Submersible well pumps are actually installed and submerged under water at the base of the well. Whereas jet pumps use suction to pull water, submersible pumps create pressure to push the water in an upward direction. Submersible well pumps are cylindrical and “thin” in diameter so as to easily fit down a well shaft. They are often tall as well since submersible well pumps usually contain multiple stages stacked on top of each other. A stage is simply a compartment with an impeller, diffuser and upthrust washer that increases the pressure as water moves up through each stage. The more stages, the higher the head. 2. So which one is better As is always the case when it comes to pumps, the answer is “it depends on your system and application.” Submersible pumps are more efficient, especially in deeper wells. The farther the pump is away from the water table, the less effective it will be. Since submersible well pumps are closer to the source, they are more reliable. The downside to a submersible pump is that it must be pulled out for maintenance, repair or replacement. Being submerged also exposes the pump to contaminants such as sand. 3. What constitutes a ‘deep well’ or ‘shallow well’ The depth of the well refers specifically to the depth of the water table, which is the top of the reservoir. A water table 25 ft. or fewer underground, while any water table deeper than 25 ft. is considered a deep well. 4. What is a convertible jet pump A convertible jet pump is a pump that can be configured for either shallow well or deep well applications with the proper fittings. Convertible jet pumps are often built as deep well jet pumps and include a bolt on shallow well adapter. Deep well fittings, such as the jet assembly (twin pipe or Packer) are usually purchased separately. 5. Why would I need a convertible pump Shouldn’t I just get either a deep well or shallow well pump Usually you’d be able to stick with either one or the other type of jet well pump. In some areas, however, water tables may fluctuate due to the climate, unique elevation, topography changes or other factors. A convertible jet well pump ensures that you will be prepared and will continue to receive well water in such a case. Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, availability and shipping information. Call our toll free number 1-800-429-0800.