|Name||Used Centrifugal Pump 25 hp|
|Short Description||*THIS ITEM HAS BEEN SOLD - FOR OTHER OPTIONS PLEASE CALL 844-475-2060 OR CLICK THE ICON BELOW FOR INSTANT CHAT!|
Used Centrifugal Pump 25 hp
- Price: $1,500.00
- Manufacturer: Goulds Pumps
- Year of Manufacture: 2012
- Location: Roswell, NM
- Zip Code: 88202
- Size/Dimensions: 25 hp
- Condition: Good
- Type: Used
Used Centrifugal Pump 25 hp
Used Centrifugal Pump 25 hp are the most common type of pump used in industry, agriculture, municipal (water and wastewater plants), power generation plants, petroleum and many other industries. They are the primary pump type in the class of pumps called "kinetic" pumps and are distinctly different than "positive displacement" pumps.
All Used Centrifugal Pump 25 hp include a shaft-driven impeller that rotates (usually at 1750 or 3500 RPM) inside a casing. The impeller is always submerged in water, and when the pump is operational the impeller spins rapidly. The centrifugal force applied to the water from this rotation forces the water outside of the casing, where it exits a discharge port. More liquid is introduced through a suction port, or inlet. The velocity imparted to the liquid by the impeller is converted to pressure energy or "head".
Used Centrifugal Pump 25 hp are unique because they can provide high or very high flowrates (much higher than most positive displacement pumps) and because their flowrate varies considerably with changes in the Total Dynamic Head (TDH) of the particular piping system. This allows the flowrate to be "throttled" considerably with a simple valve placed into the discharge piping, without causing excessive pressure buildup in the piping or requiring a pressure relief valve. Therefore, centrifugal pumps can cover a very wide range of liquid pumping applications.
Used Centrifugal Pump 25 hp Throttling Flowrates
As described above, one key advantage of centrifugal pumps is the ability to "throttle" their flowrates over a wide range. Throttling centrifugal pumps with a discharge valve is not as energy-efficient as using a Variable Frequency Drive (VFD) to slow the pump/motor speed down, but it is much less expensive to install. Of course, throttling a centrifugal pump's flowrate has certain limits.
They should not be throttled below the "minimum safe flowrate" indicated by the pump manufacturer for other than a minute or so; otherwise excessive recirculation can occur inside the pump casing which can cause excessive heat buildup of the liquid. In addition, too much "throttling" will cause excessive shaft deflection which will increase the wear on bearings and seals inside the pump.
Therefore, the ideal flowrate for a centrifugal pump is near its "Best Efficiency Point" (BEP). The BEP can be found on many pump Head-Flowrate Curves that have Efficiency curves shown on the same drawing. The BEP for a given model, speed and impeller diameter is the point where Efficiency is highest; this maximizes energy efficiency as well as seal and bearing life inside the pump.
Another important point is that running centrifugal pumps at 1750 RPM motor speeds instead of 3500 RPM motor speeds will reduce wear on seals and bearings by almost 4 times and the pump will also be less likely to cavitate when less favorable suction conditions (long suction pipes, high "lifts" from ponds or pits, low supply tank levels, or liquids with high vapor pressures such as hot water, gasoline, etc) are involved. However, centrifugal pumps running at 1750 RPM require much larger casings and impellers than those running at 3500 RPM and therefore, cost considerably more money.
Used Centrifugal Pump 25 hp Viscosity
Used Centrifugal Pump 25 hp are designed for liquids with relatively low viscosity that pour like water or like a very light oil. They can be used with slightly more viscous liquids such as 10 or 20 wt. oils at 68-70 deg F (ambient temperatures) but additional horsepower must be added because centrifugal pumps become less inefficient with even slight increases in viscosity and require more horsepower.
When viscosity of the liquids exceed those of 30 wt oils at ambient temps (approx. 440 centistokes or 2,000 SSU), centrifugal pumps become very inefficient and require much more horsepower. In those cases, most pump manufacturers start recommending positive displacement pumps (such as gear pumps, progressive cavity pumps) instead of centrifugal pumps in order to keep horsepower requirements and energy usage lower.
Used Centrifugal Pump 25 hp Horsepower
Used Centrifugal Pump 25 hp also require increases in horsepower when pumping non-viscous liquids that are more dense than water such as fertilizer and many chemicals used in industry. Water has a density of 8.34 lbs/gallon. The specific gravity of any liquid is the density in lbs/gallon of that liquid divided by 8.34. The required increase in horsepower for a centrifugal pump used for a more dense liquid than water is directly proportional to the increase in specific gravity of the liquid.
Loading and Logistics Available for Used Centrifugal Pump 25 hp. We can deliver anywhere in the United States!
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Important Buyers Notice: All items are Sold "As-Is" with "No Warranty" expressed or implied. Items offered for sale may be damaged, inoperable and/or missing parts. You are strongly urged to carefully review each photo and video as well as personally inspect the item before making a decision to purchase. Free Oilfield Quote is not responsible for any missing or damaged equipment, part, item or accessory and shall not be held liable for any damage prior to or during the removal and/or delivery of the equipment. Any and all agreements contrary to the above disclaimer must be in writing and agreed upon up front and prior to any transaction.
Loadout & Yard Information
1. Payment: Payment in full is required within 3 days of the invoice date. Acceptable payments: Wire Transfer, Cashiers Check.
2. Loading Requirements: Purchaser is responsible for all loadout expenses (cranes, man-lifts, sky tracks, operators, riggers etc.) including shipping and logistics and shall contract and pay any associated costs directly with contractors.
3. Safety Requirements: Safety Glasses, Hard Hats, Steel Tip Boots Required on all Free Oilfield Quote loadout locations.
4. Warranty Information: This Item is being sold AS IS-WHERE IS with “No Warranty” expressed or implied.
5. Removal Policy: Removal Deadline: 10 days after the invoice is generated. Unclaimed items beyond the removal deadline are subject to additional fees and forfeiture.
Buyers are required to examine all items prior to removing them from the location. If the item differs significantly from how it was represented in the lot description, the Buyer must contact Customer Care prior to removing.
Buyer Requirements for Used Centrifugal Pump 25 hp
Buyer must schedule an appointment with the yard prior to removal.The Buyer is required to remove all purchased items from the seller's location by the removal deadline. Failure to do so may result in the buyer being assessed fees in the amount of $50.00 per day by the Seller and/or the Company. Any storage fees owed must be paid directly by the buyer and are the buyer’s sole responsibility.
This Item is being sold AS IS WHERE IS. NO customs, export, or import assistance is available from our Company, the Seller, or the Storage Location. Our Company, Seller, and Storage Location expressly disclaim the appropriateness of this item to be exported from, or imported to, any country. Shipping, logistics, transportation, loading, customs, export, and import activities, and all associated costs, are the sole responsibility of the Buyer.