Selecting the Proper Oil Pump

Pumps, Oil Transfer and Centrifuge Feeding

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There are several types of pumps such as centrifugal, gear, vane and diaphragm. Some pumps are well suited for use with oil and others may or may not be. The type and viscosity of the oil also determines which pumps are viable.  Thin oils may be moved faster and thick oils require high torque. Pumps are selected depending upon the application such as oil collection, transfer, blending or centrifuge feed.  Generally, centrifugal pumps are not suited to oil transfer. Centrifugal pumps are high volume-low viscosity pumps that require water thin liquids. Oils are too thick and burn up the motors on centrifugal pumps in a few minutes.

Oil Collection: Because waste oil may have a variety of contaminants such as water, dirt, fish parts and leaves among other things, the best collection method is a vacuum tank. The next best option is a gear pump. Gear pumps are relatively inexpensive, compact and powerful. They transfer oil quickly and reliably. However water is often found at the bottom of waste oil tanks and this is both bad for a gear pump and bad for the oil. When collecting oil with a gear pump, do not pump from the bottom of the waste oil tank, but come up a few inches to minimize water collection.

All but the largest diaphragm pumps are too slow for oil collection. Large diaphragm pumps are both expensive and … large, making them a poor choice for oil collection.

Transfer: Gear pumps are king of oil transfer. They are inexpensive, fast and reliable making them the best choice for quick oil transfer.

Gear Pump Selection: Oil viscosity and transfer rate dictate they size and speed of the gear pump. High speed pumps require thin oils. Low speed-high torque pumps transfer thicker heavier oils. Colder temperatures cause oil to thicken and motor oil is generally regarded as thick especially at 50°F and below. High speed pumps run at 3600 rpm and low speed pumps run at 1800 rpm.

Blending: Gear pumps are good and blending and this is an advantage if you are mixing a batch of oil. Their superior blending ability also creates oil-water emulsions if water and oil are sucked up during oil collection.

Centrifuge Feeding: The best pump for centrifuge feeding is a small pneumatic diaphragm pump. They require minimal air input and the output of these pumps is easily adjusted by varying the air pressure. The output may be shut off with no damage to the pump and it does not require a bypass valve. The diaphragm pump is gentle with the oil and does not “blend” the contaminants into the oil. Nitrile or neoprene diaphragms are used for mineral oils. Viton diaphragms are used for vegetable oils and biodiesel.

Gear pumps are a very poor choice for centrifuge feeding.  Only the very smallest capacity gear pumps match the centrifuge flow. Gear pumps can not be turned down without a bypass valve or variable frequency drive. Electric motors heat up when run much below their rated frequency and gear pumps superior blending ability thoroughly mixes contaminants into the oil making cleaning more difficult.

When the average consumer hears the word “oil,” destructive oil spills often leap to mind. Doesn’t oil have detrimental effects on the environment? The economy?

When industry leaders think about “oil,” the proper removal of contaminated oil, wasted or used, comes to mind, completed by utilizing the proper waste oil transfer pump. How can one choose the proper waste oil transfer pump? Below, we discuss the importance of transferring waste oil and share a guide to selecting the best pump for waste oil for your auto shop.

Choosing the Proper Waste Oil Transfer Pump is A Necessity

Choosing the proper waste oil pump is a necessity. Why? Because waste oil can be hazardous, requiring careful removal. Though not a consistent occurrence, waste oil can display characteristics of hazardous waste materials. If this happens, the oil must be managed according to specific requirements. If the oil is non-hazardous, applicable requirements are still necessary to follow.

The proper transfer pump is portable, powerful, and trustworthy, always apt to meet specific requirements and properly transfer waste oil.

A Quick Note Regarding “Used Oil” and “Waste Oil”

Individuals often confuse “waste oil” with “used oil.” Choosing an ideal transfer pump begins with a grasp of both terms.

“Waste oil,” either petroleum-based or synthetic, is a contaminated oil that has become unsuitable for its intended purpose and must be disposed of carefully. Simply put, “used oil” is either petroleum-based or synthetic oil that has been used. Contamination results from the physical or chemical properties infused into the oil during use, resulting in oil that must now be disposed. Oils that fall into this category often include hydraulic oil, transmission oil, gear box oil, synthetic oil, motor oil, brake fluids, etc.

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Selecting the Proper Waste Oil Pump

Selecting the proper pump begins with defining terms. Understanding definitions simplifies the selection process. Initially, we have provided a simple differentiation between a high-volume pump, high torque pump, and diaphragm pump:

• High volume pumps are utilized to transfer thin or warm oils.
• High torque pumps are utilized to transfer thick or cool oils.
• Diaphragm pumps are utilized for centrifuge systems. Diaphragm pumps are built for mineral oil, vegetable oil, or biodiesel oil transfer. Diaphragm pumps are primarily utilized for centrifuge systems.

As demonstrated, viscosity, type of oil, and environmental conditions play a role in selecting the ideal transfer pump. For example, thick oil requires a higher torque pump. Thin oils move quickly and require less sheer power to transfer. Below, we have compiled a list of considerations to keep in mind while choosing a pump:

• Does the pump include a filtration system? Often, waste oil is contaminated with organic objects, from leaves to garbage. These quickly clog a transfer pump without proper filtration.
• Evaluate the environments in which the transfer pump will be applied. Will the pump face extreme temperatures? If the pump functions well in extreme cold, will it function well in a desert-like environment? Consider that the pump will be transported and utilized in a variety of locations with different environment. These considerations will play into the chosen equipment.
• How long should the pump last? Well, for a long, long time! Though the answer may seem obvious, ensuring the chosen pump is made with high-quality, sturdy materials is important. An equally important question, if a small but crucial component of the pump breaks, are specific repair parts readily available?

SVI International, Inc seeks to make the process of choosing the proper waste oil transfer pump simple. We provide two transfer pumps, built to address common issues regarding waste oil transfer.

PTP-1140-GRD

The PTP-1140-GRD Transfer Pump is built to last, with heavy-duty, industrial grade equipment. At 110V, the PTP-1140 pump is ideal for both extremely hot or cold environments, perfect for transfer and utilization in a wide variety of disparate environments. The PTP-1140 features a cast iron gear pump with hardened steel helical gears and an internal bypass pressure relief valve. To provide ease of transfer, the PTP-1140 includes a round carrying handle for comfort.

The PTP-1140 pump is built for strength and convenience. As mentioned, transferring the pump is seamless, and the places it can be used are nearly endless. A few possible applications include transferring waste oil at maintenance facilities across the Canadian oil sands, removing transformer oil by electrical power co-ops, and working at any industrial or automotive facility where waste oil accumulates and needs removal.

PTP-1140 pumps can be ordered with an optional 10-micron spin-on filter system, built to allow for the transfer of either filtered or unfiltered oil by switching valve positions. As mentioned, filtration is crucial to prevent clogging. Filtered waste oil is especially important when oil is transferred from oil burning furnace system reservoirs.Clogging prevention allows for proper and efficient combustion of oil within the furnace.

Furthermore, the pump is excellent for industrial environments, easily used for periodic oil changes on large machinery. For example, lathes working in high-volume turning operations require pumps to refresh and renew their oil. Simple to operate and maneuver, the PTP-1140 quickly pumps out old oil and fills the new.

Finally, the PTP-1140 is not made to be thrown out. The pump is long-last and robust, delivering real value to end customers who deserve respect. If a specific piece fails, SVI International is also the provider of each part – quick and reliable to get the pump back to work.

PTP-1140-GRD-SFO

The PTP-1140-GRD-SFO is extraordinarily similar to its counterpart, discussed above, with identical features, quality, and versatility. The only difference: this variety comes equipped with a spin-on filtration system (SFO). This system simplifies the process of changing and maintaining the filter, allowing for quick and efficient removal of contaminants from the waste oil being pumped. The spin-on design is known for its convenience and ease of use, enabling operators to swiftly replace the filter without requiring specialized tools or extensive downtime.

Why Purchase from SVI International?

SVI International, Inc. is the leader in repair parts for automotive and industrial equipment. We are devoted to providing innovative solutions to a variety of industries, offering high-quality products and parts – readily available at our three warehouses across the U.S.

We want to work with you, and we are always a phone call away. For questions, concerns, or help placing an order, call us at (800) 321-8173 or via our online contact form!

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