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Denwell Fluid Controls
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Hot Oil Pumps

Hot Oil Pumps Specification

Theory
Centrifugal Pump

Flow Rate
Up to 250 m3/hr

Material
Cast Iron/Cast Steel/SS-304/SS-316

Structure
Single Stage

Suction Type
Single Suction

Volute Type
Single Volute

Nozzle Location
End Suction Top Discharge

Shaft Orientation
Horizontal

Power Source
Electric

Pressure
Up to 16 Bar

Temperature
Up to 350C

Inlet, Outlet Diameter
50 mm to 150 mm

Speed
2900 RPM

Application
Hot oil circulation, Heat transfer systems, Thermal oil systems

Direction of Rotation
Clockwise (seen from driving end)

Cooling Arrangement
Air Cooled

Shaft Material
EN-8/SS-410

Lubrication
Grease Lubricated Bearings

Max Solid Passage
Not Suitable for Solids

Casing Pressure Test
1.5 times of working pressure

Sealing System
Mechanical Seal/Teflon Gland Packing

Mounting
Foot Mounted

Bearing Type
Heavy Duty Ball Bearings

Impeller Type
Closed Impeller

Hot Oil Pumps Trade Information

Minimum Order Quantity
1 Piece

Supply Ability
100 Pieces Per Month

Delivery Time
7 Days

About Hot Oil Pumps

The air-cooled hot oil pump is mainly used for conveying weak corrosive high-temperature liquid without solid particles. The operating temperature is 50 This is an ideal hot oil circulating pump.

Reliable Hot Oil Circulation Solutions

Engineered to meet the rigorous demands of hot oil and heat transfer applications, these pumps offer efficient circulation even at elevated temperatures and pressures. Their robust build and precise engineering make them ideal for industrial sectors needing consistent thermal oil movement without the risk of leakage or downtime.

Optimised Design for Industrial Needs

Featuring a closed impeller, heavy-duty bearings, and a single-volute casing, the pump ensures smooth, vibration-free operation. The air-cooled and grease-lubricated system removes the need for additional cooling water, simplifying maintenance and improving safety. Flexible material choices further enhance compatibility with various process fluids.

FAQ's of Hot Oil Pumps:

Q: How should a hot oil pump with mechanical seal or Teflon gland packing be maintained for optimal performance?

A: Regular inspection of the sealing system and timely replacement of worn components are critical. Ensure grease lubrication is performed per manufacturer guidelines, clean the air-cooling passages, and check bearing conditions to extend pump life and preserve efficiency.

Q: What types of applications are best suited for these hot oil pumps?

A: These pumps are ideal for hot oil circulation in heat transfer systems, thermal oil systems, and similar industrial processes that require reliable performance at high temperatures and pressures. They are not suitable for handling solids or abrasive materials.

Q: When is it necessary to perform a pressure test on the casing, and what is the required standard?

A: A casing pressure test should be performed during installation and after major maintenance. The test is conducted at 1.5 times the working pressure, ensuring the pump's integrity under operational stress and complying with industry safety standards.

Q: Where are the suction and discharge nozzles located on this pump?

A: The suction nozzle is positioned at the end (end suction), while the discharge nozzle is located at the top (top discharge). This configuration supports convenient pipeline layout and efficient fluid delivery in most industrial installations.

Q: What benefits does air-cooled, grease-lubricated bearing design offer?

A: The air-cooled, grease-lubricated bearings eliminate the need for water cooling, reducing maintenance complexity and operational cost. This setup also minimizes the risk of contamination and extends bearing life, making the pump reliable for continuous operation in high-temperature environments.

Q: How do the material options (Cast Iron, Cast Steel, SS-304, SS-316) contribute to the pump's durability?

A: Material selection enhances the pump's ability to resist corrosion, wear, and deformation under high temperature and aggressive fluids. Stainless steel versions (SS-304, SS-316) are especially preferred for chemical resistance and demanding environments, ensuring long-term operational stability.

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