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Welch CRVpro 4 Catalog 3041-01 Direct Drive Pump
Welch CRVpro 4 Catalog 3041-01 Direct Drive Pump:
CRV Pro 4, 6 and 8 are the latest technology in rotary vane vacuum pumps, by Welch Vacuum. The newly designed vacuum pumps operate 10C degrees cooler than other direct drive oil sealed vacuum pumps, which means less reaction to the oil from contaminants and less oil consumption. The lower operating temperature keeps the oil more viscous, limiting oil mist from the exhaust.
The CRV Pro line of pumps have a PTFE lined oil case and black oxide coated module for increased chemical resistance. The larger oil capacity to pumping speed dilutes contaminants to keep better oil quality for longer intervals.
Wiring Variants:
CRVpro 4 Catalog# 3041-01: Factory wired for 115V / 60Hz; 1 phase motor with line cord USplug (115V Nema-5), hose barb adapter (NW16 5/8”)
CRVpro 4 Catalog# 3042-00: Factory wired for 220-240V / 50Hz; 230V / 60Hz; 1 phase motor with line cord EU- plug (CEE 7/4), line cord UK- plug (B1363), line cord US- plug (115V Nema-5)
CRVpro brochure.pdf (chemtechscientific.com)
| What's included | 2 liters Welch Premium oil, Cat# 8995P-11, NW 16 inlet and exhaust fitting with 5/8” – 3/4” hose barb for intake and NW 16 hinged clamp with centering ring. |
| Common accessory, not included | Exhaust filter cat# 700010 |
| Pumping Speed | 2.8 CFM (78 l/min) |
| Max. Vacuum | 0.001 Torr (1x10^-4 Torr LN2 Trapped) |
| Oil Capacity | 1.15 liters |
| Tubing Needed | 5/8” or ¾” ID hose"(21 mm) |
| Exhaust / Intake | NW 16 |
| Pump RPM | 1740 |
| Dimensions LxWxH inches | 18.2" x 6.1" x 9.1” |
| Weight | 48.5 lbs (21 kg) |
| Wiring | 115V, 60 hz |
The pump should be located preferably in a clean and well ventilated area and adequate space should be provided wherever possible for routine maintenance such as changes of oil. Above all, the pump should be located as closely as possible to its system in order to utilize it most efficiently. Its location should include such determining factors as the length and size of connections, the number of bends and the type of exhaust connections.
Welch CRVpro 4 Direct Drive Pump