We Need The following Compressor.SL No. Description of the Materials Unit Qty 1 Receiprocating Compressor for Air Cooler Nos. 4 Capacity : 04 ton. Supply Voltage: 415VAC, 03 Phase Frequency : 50 Hz. Brand: Bristol/USA or Equivalent. 2 Receiprocating Compressor for Air Cooler Nos. 2 Capacity : 03 ton. Supply Voltage: 415VAC, 03 Phase Frequency : 50 Hz. Brand: Bristol/USA or Equivalent. 3 Receiprocating Compressor for Air Cooler Nos. 2 Capacity : 02 ton. Supply Voltage: 240 VAC, 01 Phase Frequency : 50 Hz. Brand: Bristol/USA or Equivalent. 4 Receiprocating Compressor for Air Cooler Nos. 10 Capacity : 1.5 ton. Supply Voltage: 240 VAC, 01 Phase Frequency : 50 Hz. Brand: Bristol/USA or Equivalent.