Double stage liquid ring vacuum pump

AT seriesDouble stage liquid ring vacuum pump

Gas volume 400 to 2800 ACFM (680 to 4750 m3/h)

The popular NASH AT two-stage vacuum pump series has provided reliable high vacuum performance for the power industry for over 25 years. The gas volume range is from 400 to 2800 ACFM (680 to 4750 m ³/hr), making AT's four vacuum pump models the ideal choice when you need a sturdy and durable machine to handle saturated process gases.

Specially designed for operation under harsh conditions

The AT vacuum pump series is our first generation two-stage pump designed specifically for condenser exhaust work. The AT vacuum pump includes a complete two-stage rotor designed to reduce the vacuum level to 0.8 in HgA (27 mbar abs). The absolute pressure is about 40% lower than that of a single-stage pump.

The AT liquid ring vacuum pump is designed for the chemical, petrochemical, and power industries. Its complete two-stage rotor, AT pump, can condense the steam generated by the process and recover or process them.

Conical port and rotor configuration

Nash's variable conical port design allows the compression force to counteract the weight of the rotor and shaft, thereby minimizing the operating load on the bearings. Variable ports optimize pump performance throughout the entire operating range. With continuous innovation, Nash's variable cone port design has the following characteristics:

Optional cam cleaning methods to minimize damage caused by erosion during work involving solids

Large pressure differential capability

GSV design can minimize gas leakage from the exhaust port to the inlet, thereby increasing capacity, especially in deep vacuum

High tolerance to liquid residues

Side discharge to minimize the possibility of full liquid start-up

Self suction design can eliminate the use of booster pumps in recirculation systems

Reliable, efficient, and high-performance*

AT provides * * performance and reliability through a proven and reliable NASH conical liquid ring pump design. The first AT3006 vacuum pump was manufactured and tested at a factory in Jidianas, and the results showed that in the high vacuum range, there was no need to increase electricity consumption, and the dry air capacity could be increased by 25%. The operational efficiency of AT3006 exceeds that of AT3004, and in terms of current energy costs, efficiency is an important factor for our customers.

Whether your existing AT pump requires maintenance, repair, or replacement with a new or refurbished AT pump, Jidi Naishi can meet your needs.

Technical Specifications:

AT Two-Stage Capacity Chart

Inhalation flow rate: 400 to 2800 ACFM (680 to 4750 m3/h)

Vacuum range: up to 0.8 inHgA (up to 28 mbar abs.)

Shaft seal: stuffing box (standard)

Structural material: cast iron

AT seriesDouble stage liquid ring vacuum pump