Tsurumi brings explosive-proof pumps to North America 

Tsurumi America is bringing a line of explosion-proof pumps to North America which it says increase cost savings on a range of wastewater applications. 
Dewatering Pumps / October 1, 2020
By Ben Spencer
Tsurumi’s Avant Series was released earlier this year in Asia (Source: Tsurumi America)
Tsurumi’s Avant Series was released earlier this year in Asia (Source: Tsurumi America)

Tsurumi expects the Avant Series to expand its product offering in the region while meeting the demand for larger projects.

The series has been certified in accordance with FM Global explosion-proof specifications to ensure products conform to safety standards. 

The pump line features IE3 efficiency motors and an exclusive closed-circuit cooling system, which helps prevent contamination of the system while cooling the motor. 

Additionally, customers can order tailor-made Avant pumps from the factory, with specific configurations that match the demands of their jobs. 

Tsurumi's managing director Glenn Wieczorek says the pumps will “ensure energy savings on a number of projects in the wastewater industry, such as sewage collection from commercial buildings and municipal systems”. 

Named MQ, the new line of Avant pumps has five different types of impellers — Open Channel (MQB), Chopper (MQC), Vortex (MQU), Grinder (MQG) and High Head (MQS). It also offers wide ranges of specifications featuring 2 to 16-inch discharge bore diameters and 4 to 215 HP motor output specifications.

The product line comes with an optional coating material called Molib-tech, which Tsurumi describes as an alternative to the conventional ceramic coating process and particularly suitable for preventing serious wear due to abrasion or cavitation on impellers, suction flanges and volutes.

According to Tsurumi, it applies a layer of high-strength material to iron to improve the pump's durability. 

In the dry pit version of the pump, the motor is cooled by a system that uses a water-glycol mix circulating in a special closed loop circuit. This system is expected to keep the cooling mix separate from the wastetwater in which the pump is submerged. On the Avant pumps, the mechanical seals are installed in an oil chamber separated from the cooling system and can be changed without draining the system.

“If the primary seal on a conventional pump cooling system fails, it can get completely contaminated, which will damage the pump,” Wieczorek continues. “The new cooling system on the Avant Series offers an extra layer of protection to the pump, as the glycol mix runs in a different path. That makes the cooling system more reliable and efficient.”

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