Welch Vacuum Pump Cross Reference

Welch Vacuum Pump Cross Reference | Belt-Driven, CRVpro, 8900 Series Equivalents

Compare Welch belt-driven rotary vane pumps, CRVpro models, and 8900-series direct-drive two-stage pumps to comparable Edwards, Leybold TRIVAC, and Alcatel / Adixen families.

This page is organized by Welch pump family so you can quickly identify the closest equivalent class before selecting parts, oil, filters, or replacement direction.

Belt-Driven Cross Reference CRVpro Cross Reference 8900 Series Cross Reference

Welch Belt-Driven Rotary Vane Pumps

This section covers the current Welch belt-driven lineup, including DuoSeal and ChemStar models.

Welch Model	Family	Type	Comparable Class	Closest Families	Repair Kits / Parts	Oil	Filters	New Pump / Replacement	Notes
DuoSeal 1374	DuoSeal	Belt-Driven Rotary Vane	Mid-size lab / process class	Edwards E2M18, Leybold D16B, Alcatel 2015	1374 Parts	Oil Options	1374 Filters	1374 Replacement Help	Legacy belt-driven laboratory class.
DuoSeal 1376	DuoSeal	Belt-Driven Rotary Vane	Mid-size lab / process class	Edwards E2M18, Leybold D16B, Alcatel 2015	1376 Parts	Oil Options	1376 Filters	1376 Replacement Help	Common mid-size Welch belt-driven model.
DuoSeal 1376B-46	DuoSeal	Belt-Driven Rotary Vane	Mid-size lab / process class	Edwards E2M18, Leybold D16B, Alcatel 2015	1376B-46 Parts	Oil Options	1376B-46 Filters	1376B-46 Replacement Help	Variant of 1376 family; verify exact configuration.
DuoSeal 1380	DuoSeal	Belt-Driven Rotary Vane	Mid / upper lab class	Edwards E2M18–E2M28, Leybold D16B–D25B	1380 Parts	Oil Options	1380 Filters	1380 Replacement Help	Check exact pumping speed and drive details.
DuoSeal 1397	DuoSeal	Belt-Driven Rotary Vane	Higher-capacity lab class	Edwards E2M28, Leybold D25B, Alcatel 2021	1397 Repair Kits	Oil Options	1397 Filters	1397 Replacement Help	Popular higher-capacity belt-driven Welch model.
DuoSeal 1397B-46	DuoSeal	Belt-Driven Rotary Vane	Higher-capacity lab class	Edwards E2M28, Leybold D25B, Alcatel 2021	1397B-46 Parts	Oil Options	1397B-46 Filters	1397B-46 Replacement Help	1397-family variant; verify exact configuration.
DuoSeal 1399	DuoSeal	Belt-Driven Rotary Vane	Higher-capacity lab / process class	Edwards E2M28–E2M40, Leybold D25B–D40B, Alcatel 2021–2033	1399 Parts	Oil Options	1399 Filters	1399 Replacement Help	Higher-capacity belt-driven Welch family.
DuoSeal 1400	DuoSeal	Belt-Driven Rotary Vane	Higher-capacity lab / process class	Edwards E2M28–E2M40, Leybold D25B–D40B, Alcatel 2021–2033	1400 Parts	Oil Options	1400 Filters	1400 Replacement Help	Stand-alone model, not a series heading.
DuoSeal 1402	DuoSeal	Belt-Driven Rotary Vane	Small / mid lab class	Edwards RV5, Leybold D8B, Alcatel 2010	1402 Repair Kits	Oil Options	1402 Filters	1402 Replacement Help	Widely searched classic Welch model.
DuoSeal 1402B-46	DuoSeal	Belt-Driven Rotary Vane	Small / mid lab class	Edwards RV5, Leybold D8B, Alcatel 2010	1402B-46 Parts	Oil Options	1402B-46 Filters	1402B-46 Replacement Help	1402-family variant; verify exact configuration.
DuoSeal 1405	DuoSeal	Belt-Driven Rotary Vane	Higher-capacity lab / process class	Edwards E2M40 class, Leybold D40B class, Alcatel 2033 class	1405 Parts	Oil Options	1405 Filters	1405 Replacement Help	Larger belt-driven class; check exact specs.
DuoSeal 1400W-01	DuoSeal	Belt-Driven Rotary Vane	1400-class	Edwards E2M28–E2M40 class	1400W-01 Parts	Oil Options	1400W-01 Filters	1400W-01 Replacement Help	Wet / specialty configuration; verify exact application.
DuoSeal 1402W-01	DuoSeal	Belt-Driven Rotary Vane	1402-class	Edwards RV5 class, Leybold D8B class	1402W-01 Parts	Oil Options	1402W-01 Filters	1402W-01 Replacement Help	Wet / specialty configuration; verify exact application.
DuoSeal 1405W-01	DuoSeal	Belt-Driven Rotary Vane	1405-class	Edwards E2M40 class, Leybold D40B class	1405W-01 Parts	Oil Options	1405W-01 Filters	1405W-01 Replacement Help	Wet / specialty configuration; verify exact application.
ChemStar 1376N	ChemStar	Belt-Driven Chemical-Duty Rotary Vane	1376-class with chemistry considerations	Alcatel C1 / C2, chemistry-prepped Edwards service families	1376N Parts	Chemical-Duty Oil	1376N Filters	1376N Replacement Help	Chemical-duty version; verify chemistry compatibility.
ChemStar 1400N	ChemStar	Belt-Driven Chemical-Duty Rotary Vane	1400-class with chemistry considerations	Alcatel C1 / C2, chemistry-prepped Edwards service families	1400N Parts	Chemical-Duty Oil	1400N Filters	1400N Replacement Help	Chemical-duty 1400-family variant.
ChemStar 1400N-90	ChemStar	Belt-Driven Chemical-Duty Rotary Vane	1400-class with chemistry considerations	Alcatel C1 / C2, chemistry-prepped Edwards service families	1400N-90 Parts	Chemical-Duty Oil	1400N-90 Filters	1400N-90 Replacement Help	Chemical-duty variant; verify exact build.
ChemStar 1402N	ChemStar	Belt-Driven Chemical-Duty Rotary Vane	1402-class with chemistry considerations	Alcatel C1 / C2, chemistry-prepped Edwards service families	1402N Parts	Chemical-Duty Oil	1402N Filters	1402N Replacement Help	Chemical-duty 1402-family variant.
ChemStar 1402N-90	ChemStar	Belt-Driven Chemical-Duty Rotary Vane	1402-class with chemistry considerations	Alcatel C1 / C2, chemistry-prepped Edwards service families	1402N-90 Parts	Chemical-Duty Oil	1402N-90 Filters	1402N-90 Replacement Help	Chemical-duty variant; verify exact build.

Welch CRVpro Cross Reference

Welch currently lists CRVpro2, 4, 6, 8, 16, 24, 30, 48, and 65, plus CRVpro4 XPRF, 8 XPRF, and 16 XPRF. :contentReference[oaicite:1]{index=1}

Welch Model	Family	Comparable Class	Closest Families	Repair Kits / Parts	Oil	Filters	New Pump / Replacement	Notes
CRVpro2	CRVpro	Small two-stage lab class	Edwards RV3 class, Leybold D4B class, Alcatel 2005 class	CRVpro2 Parts	Oil Options	CRVpro2 Filters	CRVpro2 Replacement Help	Smallest current CRVpro family listing.
CRVpro4	CRVpro	Small two-stage lab class	Edwards RV3–RV5 class, Leybold D4B–D8B class	CRVpro4 Parts	Oil Options	CRVpro4 Filters	CRVpro4 Replacement Help	Small current CRVpro model.
CRVpro6	CRVpro	Small / mid two-stage lab class	Edwards RV5 class, Leybold D8B class, Alcatel 2010 class	CRVpro6 Parts	Oil Options	CRVpro6 Filters	CRVpro6 Replacement Help	Common small modern class.
CRVpro8	CRVpro	Small / mid two-stage lab class	Edwards RV8 / RV12 class, Leybold D8B / D16B class	CRVpro8 Parts	Oil Options	CRVpro8 Filters	CRVpro8 Replacement Help	Bridge size in current family.
CRVpro16	CRVpro	Mid two-stage lab class	Edwards E2M18 class, Leybold D16B class, Alcatel 2015 class	CRVpro16 Parts	Oil Options	CRVpro16 Filters	CRVpro16 Replacement Help	Current mid-size CRVpro listing.
CRVpro24	CRVpro	Mid / upper lab class	Edwards E2M18–E2M28 class, Leybold D16B–D25B class	CRVpro24 Parts	Oil Options	CRVpro24 Filters	CRVpro24 Replacement Help	Use exact specs for final matching.
CRVpro30	CRVpro	Upper two-stage lab class	Edwards E2M28–E2M40 class, Leybold D25B–D40B class, Alcatel 2021–2033 class	CRVpro30 Parts	Oil Options	CRVpro30 Filters	CRVpro30 Replacement Help	Higher-capacity current family row.
CRVpro48	CRVpro	Large two-stage class	Edwards E2M40–E2M80 class, Leybold D40B–D65B class	CRVpro48 Parts	Oil Options	CRVpro48 Filters	CRVpro48 Replacement Help	Larger current CRVpro model.
CRVpro65	CRVpro	Large two-stage class	Edwards E2M80 class, Leybold D65B class	CRVpro65 Parts	Oil Options	CRVpro65 Filters	CRVpro65 Replacement Help	Largest current CRVpro listing.
CRVpro4 XPRF	CRVpro XPRF	Small two-stage specialty class	Small two-stage families with specialty / chemistry considerations	CRVpro4 XPRF Parts	Oil Options	CRVpro4 XPRF Filters	CRVpro4 XPRF Replacement Help	XPRF variant; verify exact intended environment.
CRVpro8 XPRF	CRVpro XPRF	Small / mid two-stage specialty class	RV5 / RV8 / D8B-class specialty applications	CRVpro8 XPRF Parts	Oil Options	CRVpro8 XPRF Filters	CRVpro8 XPRF Replacement Help	XPRF variant; verify chemistry and spec details.
CRVpro16 XPRF	CRVpro XPRF	Mid two-stage specialty class	E2M18 / D16B-class specialty applications	CRVpro16 XPRF Parts	Oil Options	CRVpro16 XPRF Filters	CRVpro16 XPRF Replacement Help	XPRF variant; verify chemistry and spec details.

Welch 8900 Series Cross Reference

The Directorr manual covers 8905, 8907, 8912, 8917, 8920, and 8925, and identifies them as two-stage, rotary-vane, oil-sealed vacuum pumps. :contentReference[oaicite:2]{index=2}

Welch Model	Family	Type	Comparable Class	Closest Families	Repair Kits / Parts	Oil	Filters	New Pump / Replacement	Notes
8905	Directorr 8900	Direct-Drive Two-Stage Rotary Vane	Small two-stage lab class	Edwards RV3 class, Leybold D4B class, Alcatel 2005 class	8905 Parts	Oil Options	8905 Filters	8905 Replacement Help	Smallest verified 8900 model.
8907	Directorr 8900	Direct-Drive Two-Stage Rotary Vane	Small two-stage lab class	Edwards RV3–RV5 class, Leybold D4B–D8B class	8907 Parts	Oil Options	8907 Filters	8907 Replacement Help	Verify exact pumping speed for final matching.
8912	Directorr 8900	Direct-Drive Two-Stage Rotary Vane	Small / mid two-stage lab class	Edwards RV5 / RV8 class, Leybold D8B / D16B class, Alcatel 2010 class	8912 Parts	Oil Options	8912 Filters	8912 Replacement Help	Bridge class within the 8900 family.
8917	Directorr 8900	Direct-Drive Two-Stage Rotary Vane	Mid two-stage lab class	Edwards E2M18 class, Leybold D16B class, Alcatel 2015 class	8917 Parts	Oil Options	8917 Filters	8917 Replacement Help	Mid-size verified 8900 family row.
8920	Directorr 8900	Direct-Drive Two-Stage Rotary Vane	Mid / upper two-stage class	Edwards E2M18–E2M28 class, Leybold D16B–D25B class, Alcatel 2015–2021 class	8920 Parts	Oil Options	8920 Filters	8920 Replacement Help	Larger 8900 family row.
8925	Directorr 8900	Direct-Drive Two-Stage Rotary Vane	Upper two-stage lab / process class	Edwards E2M28–E2M40 class, Leybold D25B–D40B class, Alcatel 2021–2033 class	8925 Parts	Oil Options	8925 Filters	8925 Replacement Help	Largest verified 8900 model.

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