Centrifugal Pump for Industrial Refrigeration

It is especially designed for industrial refrigeration because it has a degasification chamber system that avoids bubbles as well as unexpected cavitation. The product's entrance turbine is closed with a labyrinthic sail in order to avoid the turbulence.
The pump doesn't need a filter because, due to its design, the dirtiness accumulated doesn't damage the turbine's performance.

Employment
Recycling of NH3 and Freons in cold storage plants.
Natural Gas Condensing System.

Advantages
• There is no cavitation
• Easy to maintain and low cost
• Tungsten carbide balanced mechanical sail
• Minimum NPSH 1 m
• I doesn't need a filter in suction

General Measures

Centrifugal Pump
For years, centrifugal pumps have been used for carrying heavy fluids or with solid components.
The company has used this system over the last 26 years to replace regenerative pumps -or paddle pumps- in the decantation of Liquefied Gases such as ammoniac, carbonic gas, LPG and freons. The centrifugal system was never considered for this task because of the cavitation -the pressure and flow rate drop at the moment of the pump's generation- but the company has developed a pump with a degasification system. This system allows to work simultaneously with gas and fluid, letting just the fluid to come out, and eliminating by gravity the gas or bubbles located into the pump's chamber, avoiding the cavitation.
The pump's chamber system let you to work with a NPSH -or low manometrical level-, because it doesn't need to work flooded or with a particular installation for getting a manometrical level. The reason is that the pump begins to generate immediately after the ignition, due to the fluid's pressure and the high suction power. Therefore, complicated operations are not needed, and the installation of the pump is simple.

Mechanical Seal
The mechanical seal works into the pump's chamber: the pump is refrigerated by the same fluid being decanted and the mechanical seal's service life is increased.
Frequently, the pump works at very high pressures, producing a bigger effort in the mechanical seal's track. In order to avoid this situation, a balanced seal has been designed, dividing the pressure strength and letting the seal work softly. It increases the tracks' service life and don't let the engine to absorb the pressure effort.

Alignment
Our models have an auto-aligning coupling system, due to the coupling and lantern system designed by the company. This system allows the axle's engine to go forward and backwards at the moment of driving; this avoids the bending of the axle's gaskets and the transmission of effort to the pump's bearings. All of this, along with the fulcrum into the pump's chamber and the perfect balancing of mobile parts assures a non-vibrating and noiseless performance.

Why there is no cavitation in our pumps:
All of our pumps have a degasification chamber, which allows the evacuation of gases produced by installation problems. Such evacuation is made through the turbine's suction antechamber and the gases return to the system due to the leveling.

They don't need a By-Pass:
The pumps have a very simple installation system because they don't need a safety valve. The pump reaches the tank or reservoir fluid and pressure's level; therefore, even when the pump is still generating pressure and flow once the unloading is over, there is no danger of overpressure because turbines are tabulated to the required work pressure.

That system avoids the pump's cavitation because one of the pipes is connected to the suction pipe used for overfeeding the pump's front chamber with fluid, avoiding in this way the vacuum (this pipe has the same fluid level than the tank). The second pipe sends to the top of the tank the gases produced on the line or on the pump.

NPSH:
Bombadur's pumps don't need a minimum fluid level because they are constantly full of fluid, due to the leveling system and their chambers' design.