CRVPro 8 XRPF

*Photo shows another model from the Welch Oil-Lubricated Rotary Vane range, not this exact model. Image: Welch

Headline ratings converted to common units for comparison; the table below shows each figure exactly as published.

Technical data

Source: Welch product page · retrieved 2026-10-02

As published	Value	as printed: "Weight"	as printed: "Ultimate Pressure – Without gas ballast partial"; 4x10-4 Torr	as printed: "Ultimate Pressure – Without gas ballast total"; 1.5x10-3 Torr	as printed: "Ultimate Pressure"; 1.5x10 -3 Torr	as printed: "Ultimate Pressure – With gas ballast total"; 5x10-2 Torr
Max Pumping Speed Pumping speed	4.7 cfm (131 L/min) cfm (131 L/min) oem source Source · 2026-10-02
Series range: Ultimate Pressure	2x10 -3 mbar (1.5x10 -3 Torr) mbar (0.0015 Torr)^R Needs review · excluded from comparison Source · 2026-10-02
Weight		22.5 kg oem source Source · 2026-10-20
Ultimate pressure			5x10-4 mbar oem source Source · 2026-10-20	2x10-3 mbar oem source Source · 2026-10-20	2x10 -3 mbar oem source Source · 2026-10-20	7x10-2 mbar oem source Source · 2026-10-20

Original extracted values are shown with their source and review status. Multiple values under the same condition remain separate for review.

^R a min–max range as published, not a single rating

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