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NRV Series – Rotary Vane Vacuum Pumps

Typically Ships From Stock

NRV pumps are a line of oil circulated rotary vane vacuum pumps, perfect for smaller applications. The pumps function by utilizing the sealing features of oil around the pump chamber to seal incoming gases between a series of vanes on its rotor. A key characteristic here are the vanes that are pushed against the pump chamber by springs or hydraulic pressure. The vanes move in and out of the rotor during operation of the pump. The oil is spread around the pump chamber by the vanes, and this completes the seal of the pump chamber.

The oil in a rotary vane pump is recycled during operation, allowing for a long service life with little maintenance requirements. The pump circulates its oil by first discharging it along with the pressurized process gas and then separating the oil from the process gas. This is done in a separator attached to the side of the rotary vane pump. This makes the closed circulation loop of the oil and allows the pump to operate without the need for additional process hardware, depending on process gas. The oil gets filtered after separation through an oil filter, meaning the pump can tolerate a given amount of fine particulates without damage or drop in performance. This makes the pumps robust and reliable.

Model Comparison Chart

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Model Comparison
NRV 10 Elmo Rietschle VCE 15; Busch R5 KB 0010
NRV 16 Busch R5 KB 0016
NRV 20 Busch R5 KB 0020
NRV 31 Elmo Rietschle VCE 25; Busch R5 RA 0025
NRV 41 Elmo Rietschle VCE 40; Busch R5 RA 0040
NRV 64 Elmo Rietschle VCE 60, VC 50; Busch R5 RA 0063
NRV 101 Busch R5 RA 0100 F; Elmo Rietschle VC 75, 100
NRV 161 Busch R5 RA 0165 D; Elmo Rietschle VC 150
NRV 201 Busch R5 RA 0205 D
NRV 251 Busch R5 RA 0255 D
NRV 301 Busch R5 RA 0305 D
NRV 400 Busch R5 RA 0502 C, R5 RA 0400
NRV 630 Busch R5 RA 0630 C

About NRV Series

Models: NRV-20, 31, 41, 64, 101, 161, 201, 251, 301


Features

Efficiency: The variable pitch screws lead to lower overall energy consumption by the pump system.
Environmentally Friendly: No unnecessary emissions and little contamination of pumped materials.
Low Maintenance: Only requires simple oil changes on regular, lengthy intervals.
Access to Parts: NES Company stands alone in the industry by offering spare parts for DIY repair.
Pressure ranges from atmospheric (760 torr) to .375 torr.
Versatility: Usable in a very wide range of industries with very different pumping needs.
Reliability under even the harshest pumping loads and conditions.

Additional information

Weight 9 lbs
Dimensions 12 × 5 × 7 in
Model

NRV 006, NRV 008, NRV 010, NRV 016, NRV 020, NRV O31, NRV 041, NRV 064, NRV 101, NRV 161, NRV 201, NRV 251, NRV 301, NRV 400, NRV 630

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Accessories Price
T Style Line Filter 8A $29.33
T Style Line Filter 10A $66.00
T Style Line Filter 25A $261.56
T Style Line Filter 32A $312.89
T Style Line Filter 50A $1,097.56
T Style Line Filter 80A $1,151.33
L Style Line Filter 15A $78.22
L Style Line Filter 20A $105.11
L Style Line Filter 25A $127.11
L Style Line Filter 32A $161.33
L Style Line Filter 50A $356.89
L Style Line Filter 80A $941.11
Oil Filter NRV 31-101 $22.00
Oil Filter NRV 160-300 $31.78
Exhaust valve F31-101 $66.00
Exhaust valve F161-301 $78.22
Check valve F31-F101 $66.00
Check valve F161-F301 $80.67
NRV-6 Exhaust Filter $29.33
NRV-10/20 Exhaust Filter $41.56
NRV-31/41 Exhaust Filter $68.44
NRV-64/101 Exhaust Filter $73.33
NRV-161–301 Exhaust Filter $95.33
NRV-400/630 Exhaust Filter $124.67
NRV-6 Vane $24.44
NRV-10/20 Vane $26.89
NRV-31 Vane $31.78
NRV-41 Vane $39.11
NRV-64 Vane $44.00
NRV-101 Vane $51.33
NRV-161/201 Vane $215.11
NRV-251/301 Vane $244.44
NRV 400 Vane $447.33
NRV-630 Vane $672.22

DOWNLOAD SPEC SHEET

NRV Series – Rotary Vane Vacuum Pumps

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Model Normal Capacity Ult. Press. w. float valve Ult. Press. w/o float valve Motor Voltage Nominal motor power Nominal motor speed Sound level Oil Fill Weight
CFM mbar mbar V HP RPM dB (A) qts. lbs.
6 4.24 2 20 3ϕ220/380
1ϕ 220
3ϕ 0.5
1ϕ 0.5
1720 50 0.24 26.5
8 5.65 0.5 3ϕ 0.4
1ϕ 0.5
59 0.32 39.6
10 7.06 3ϕ 0.74
1ϕ 0.74
1680 58 0.42 44.1
16 11.18 2 3ϕ 0.6
1ϕ 0.74
3600 60 0.32 39.6
20 14.13 3ϕ 1
1ϕ 1.15
3400 61 0.42 44.1
31 21.19 0.5 3ϕ 1.48
1ϕ 2.01
1700 64 1.06 75
41 28.25
220/380
3ϕ 2.01 1710 67 1.06 84
64 44.73 3ϕ 220/380
1ϕ to order
3ϕ 3.39 1760 68 2.11 141.1
101 70.63 3ϕ 4.63 70 2.11 165.4
161 111.83
220/380
3ϕ 7.38 1745 72 7.40 383.6
201 141.26 3ϕ 7.38 74 7.40 407.9
251 176.57 3ϕ 10.06 1740 74 7.40 445.3
301 211.89 3ϕ 11.53 76 7.40 480.6
400 282.52 3ϕ to
order
3ϕ 20.11 1200 72 13.74 1212.5
630 447.32 3ϕ 24.81 74 15.85 1477.1

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