TRN Series

Features

High oxygen transfer
The air drawn into the aerator is mixed with pressurized liquid (generated from impeller movement) and directed to the discharge port via a guide vane. This results in a higher dissolution of oxygen as pressures generated are greater than that produced by water depth.

Dual inside mechanical seal
The aerator is furnished with a dual inside mechanical seal located completely in an oil chamber. This seal system does not rely on the liquid for the lubrication and cooling, which increases the reliability of the sealing.

Non-pressure shaft sealing
The shaft sealing is so designed that neither submergence nor operating pressure acts on the mechanical seal during its operation. This system makes the shaft seal over a few times as durable as previous systems.

OIL LIFTER (patent pending)
The OIL LIFTER stabilizes the function of the mechanical seal. It increases the life expectancy of the seal and extends the maintenance cycle. The OIL LIFTER is supplied on all pumps of 1.5kW or over.

Anti-wicking cable entry
Every cabtyre cable has an anti-wicking block at the cable entry section of the aerator. This unique feature protects the motor from the ingress of water that may be caused by damage to the sheath of the cable. Each aerator up to 3.7kW has a rubber molded cable entry, and the pump of 5.5kW or above has en epoxy-filled cable entry.

Motor protection device
Every aerator has a motor protection device built in its motor. A circle thermal protector (CTP) is supplied on the aerators up to 7.5kW and miniature thermal protectors are supplied on aerators 11kW and over.

Non clog impeller
The design of larger passages between impeller vanes allow for larger solids to be passed. This enables the TRN to operate in situations such as sewage tanks without clogging.

Self aspirating design
Air is drawn into the aerator due to the pressure difference between the aerator and the liquid while the impeller is moving. As a result, the equipment aerates without need of a blower. In addition diffuser pipe work is not required.

Stirring performance
The upward flow of the liquid leaving the aerator generates convection currents. These currents help agitate the liquid, improving oxygen mixing throughout the tank.

Applications

Aeration, pre-aeration, and/or mixing in sewage treatment plants
Aeration, pre-aeration, and/or mixing in industrial wastewater treatment plants
Mixing of liquid for the prevention of flotation of sedimentation

Performance Curves

Technical Specifications

Model	Discharge (mm)	Power (kW)	Voltage (V)	Max depth (m)	Air volume at max depth (m3/hr)	No. outlets	Weight (kg)	Rated current A (415V)
32TRN2.75	32	0.75	415	3.5	7	6	55	1.7
32TRN21.5	32	1.5	415	3.5	20	6	55	3.5
50TRN42.2	50	2.2	415	3.6	39	6	140	5.3
50TRN43.7	50	3.7	415	4	55	6	150	8.6
50TRN45.5	50	5.5	415	4	78	6	170	12.1
80TRN47.5	80	7.5	415	4.5	124	6	190	15.9
80TRN412	80	12	415	6	157	6	200	25.7
80TRN417	80	17	415	6	202	6	220	35.2
100TRN424	100	24	415	6	388	8	460	48
150TRN440	150	40	415	6	528	8	635	83

Dimensions

All dimensions in mm

Model	D	H	A	B	d1	d2	L	W
32TRN2.75	400	473	184	146	32	90	371	81
32TRN21.5	400	473	184	146	32	90	371	81
50TRN42.2	700	689	271	226	50	140	660	123
50TRN43.7	700	694	271	226	50	140	660	123
50TRN45.5	700	835	271	226	50	140	660	123
80TRN47.5	700	868	271	246	80	140	660	133
80TRN412	700	898	271	246	80	140	660	133
80TRN417	700	958	271	246	80	140	660	133
100TRN424	1000	1254	385	417	100	-	980	272
150TRN440	1000	1407	550	452	150	-	980	269

* Chain length 5m. Other lengths available on request

Product Disclaimer: The product information and specifications on this website should be used as a guide only. The customer is responsible for ensuring the capacity and performance of the goods are sufficient and suitable for the customer's purpose. Malcolm Thompson Pumps takes no responsibility for errors or omissions in product features or specifications.