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Two-Stage Rotary Vane Pumps 
CRVPro 2

Cat. No. #3022-00

 

  • Consumes up to 36% less oil than comparable pumps
  • Runs 10°C cooler than comparable pumps. Slows corrosion.
  • Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals.
  • Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts.
Max Pumping Speed 2.5 m3/h (42 l/min)
Ultimate Pressure 3x10-3 mbar
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Description

The CRVpro family includes all the features you'd expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection. 

CRVpro2 vacuum pumps can be used for applications such as

  • freeze drying,
  • vacuum ovens,
  • schlenk lines,
  • backing turbo molecular pumps,
  • degassing,
  • vessel/chamber evacuation.

Direct drive pumps are not recommended for filtration, aspiration, drying electrophoresis gels, or other applications requiring sustained operation above 30 torr.

Specifications

 

PARAMETER
UNIT
CRVPro2
CRVpro4
CRVpro6
CRVpro8
CRVpro16
Free Air Displacement
 
 
 
 
 
 
– @ 50 Hz
m3/h (l/min)
2.5 (42)
4 (67)
6 (100)
8 (133)
18.3 (305)
– @ 60 Hz
CFM (l/min)
1.8 (50)
2.8 (78)
4.2 (118)
5.6 (158)
12.8 (363)
Pumping speed
 
 
 
 
 
 
– @ 50 Hz
m3/h (l/min)
2.3 (38)
3.8 (63)
5.1 (85)
7.3 (122)
16.8 (280)
– @ 60 Hz
CFM (l/min)
1.6 (47)
2.7 (77)
3.7 (105)
5.1 (143)
11.9 (336)
 
 
 
 
 
 
 
Ultimate Pressure
 
 
 
 
 
 
– Without gas ballast partial
mbar (Torr)
3x10-4 (2x10-4)
5x10-4 (4x10-4)
5x10-4 (4x10-4)
5x10-4 (4x10-4)
3x10-4 (2x10-4)
– Without gas ballast total
mbar (Torr)
3x10-4 (2x10-4)
2x10-3 (1.5x10-3)
2x10-3 (1.5x10-3)
2x10-3 (1.5x10-3)
3x10-3 (2x10-3)
– With gas ballast total
mbar (Torr)
9x10-2 (7x10-2)
7x10-2 (5x10-2)
7x10-2 (5x10-2)
7x10-2 (5x10-2)
6x10-3 (5x10-3)
 
 
 
 
 
 
 
Connection flanges
DN
16 KF
16 KF
16 KF
16 KF
25 KF
Ambient temperature
oC
10 - 40
10 - 40
10 - 40
10 - 40
10 - 40
Noise Level (50 Hz)
dB (A)
≤50
≤50
≤50
≤50
≤55
Oil Capacity
ml
450
1150
1150
1000
2400
Motor speed
rpm 50/60 Hz
1140/1720
1450/1740
1450/1740
1450/1740
1450/1750
Motor power
kW 50/60 Hz
0.29/0.3
0.37/0.4
0.37/0.4
0.37/0.4
0.7/0.85
Weight
kg
15
21
22
22.5
37
Dimensions, L x W x H
mm
384/138/211*
463/157/230*
463/157/230*
463/157/230*
569/206/289
*Withoud handle
 
 
 
 
 
 

Pump Packages & Related Products

Accessories & Spare Parts

Downloads

2021-02_welch_b_crvproemea_en

CRVpro
Brochure