DescriptionThe REBUILT Welch CRVpro 4 CRV pro4 3041-01 LOW NOISE LEVEL Exceptionally quiet for undisturbed work. FORCED OIL LUBRICATION Ensures moving parts are bathed in fresh oil. Equilibrates temperature, minimizes oil breakdown, and prolongs mechanical life. ANTI-SUCK BACK VALVE Prevents oil from being sucked into application in the event of a power failure.WELCH CRVPro GAS BALLAST Minimizes entrained chemicals in pump oil. Protects pump from condensable liquids from application such as water, acetonitrile, etc. cUL and CE CERTIFICATION Compliance with local regulations and safety directives for safety operation. SIZED TO FIT YOUR APPLICATION Modern and compact design to fit different applications and performance requirements.WELCH CRVPro 4 DUAL VOLTAGE MOTOR IP44 Motors are switchable from 115V to 240V for global use. Each pump includes power cord suitable for country of use.WELCH CRVPro 4 BENEFITS Reduced risk of chemical attacks and oil breakdown by diluting chemical vapors with a larger oil chamber Slowing down corrosion by cool running Operation Provides a measure of protection from sublimed chemical vapors with coating on pump module and oil case Less oil consumption by cool running Operation Extended usability of oil due to high dilution effect by a larger oil chamber Highest reliability for stable operation and long product lifespan Extended oil change intervals for less maintenance costsWelch CRVpro4 2.8 CFM Vacuum Pump REBUILT UL Listed 115V 1PH 3041-01 304101 Specifications PARAMETERUNITCRVpro 4Free air displacement -@ 50 Hz -@ 60 Hzm³/h (l/min) CFM (l/min)4 (67) 2.8 (78)Ultimate pressure -Without gas ballast partial -Without gas ballast total -With gas ballast totalmbar (Torr) mbar (Torr) mbar (Torr)5x10⁻⁴ (4x10⁻⁴) 2x10⁻³ (1.5x10⁻³) 7x10⁻² (5x10⁻²)Connection flangesNW16Hose connection, inlet¹ID Tubing5/8" - 3/4" (16-19 mm)Ambient temperature°C10-40Noise level (50 Hz)dB (A)50Oil capacityml1150Motor speedrpm 50/60 Hz1450 / 1740Motor powerkW 50/60 Hz0.37 / 0.4Weightkg (lbs.)21 (46.3)Dimensions L x W x Hmm (inch)463/157/230 (18.2/6.1/9.1)
