The new CRVpro family of direct drive vacuum pumps offers increased reliability and longer service interval vs. other direct drive rotary vane vacuum pumps. The CRVpro family consumes up to 36% less oil than comparable pumps. Three features drive these benefits:

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.

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.

Suitable applications include freeze drying, degassing, vacuum ovens and concentrators.
Direct drive pumps are not recommended for filtration, aspiration, drying electrophoresis gels, or other applications requiring sustained operation above 30 torr.

Manuals and Documents

CRVpro 4-6-8 Manual
CRVpro 30 Manual
CRVpro Series Datasheet

TECHNICAL DATA

PARAMETER	UNIT	CRVpro 4	CRVpro 6	CRVpro 8	CRVpro 30
Free air displacement
-@5OHz	m³/h (l/min)	4 (67)	6 (10o)	8 (133)	33.1 (551)
-@6OHz	CFM (l/min)	2.8 (78)	4.2 (118)	5.6 (158)	22.1 (627)
ultimate pressure
- Without gas ballast partial	mbar (Torr)	5x10^-4(4x10^-4)			3x10^-4(2x10^-4)
- Without gas ballast total	mbar (Torr)	2x10^-3(1.5x10^-3)			3x10^-3(2x10^-3)
- With gas ballast total	mbar (Torr)	7x10^-2(5x10^-2)			6x10^-3(5x10^-3)
Connection flanges	NW	16			25
Hose connection, inlet*	ID Tubing	5/8"- 3/4" (16-19 mm)			3/4" (19 mm)
Ambient temperature	℃	10-40
Noise level (50 Hz)	dB (A)	5o			55
oil capacity	ml	1150		1000	2100
Motor speed	rpm 50/60Hz	1450/1740			1450/1750
Motor power	kW 50/60Hz	0.37/0.4			0.7/0.85
Weight	kg (Ibs.)	21 (46.3)	22 (48.5)	22.5 (49.6)	39.5 (87)
Dimensions, LxWxH	mm (inch)	463/157/230 (18.2/6.1/9.1)			569/206/289 (22.4/8.1/11.4)

Welch CRVpro Rotary Vane Vacuum Pumps