PAPR PARTS INTELLIGENCE

SEC 02 // PART RECORD

KP3424-2 Lincoln Electric Viking PAPR HEPA Filter

Verified against primary source · 2026-07-04 filter · current · US

Fits these systems

Systems this part fits, with compatibility status and evidence
SystemCompatibility statusEvidence
Lincoln Electric Viking PAPR (3350 / 3250D FGS / 3350 XG) T2 Manufacturer-listed part
  1. [01] www.weldersupply.com manufacturer manual Listed as "HEPA Filter" in the Complete Systems and Replacement Parts table of Lincoln Electric publication EE14.747 (07/2020). Archived in repo: sources/lincoln-viking-3350-xg-papr-ee14747-2020.pdf. 2026-07-04

Specifications

Technical specifications
EfficiencyHEPA — filters 99.97% of particulate at 0.3 microns
Order quantitiesKP3424-2 (2/pack), KP3424-6 (6/pack)
Mandatory stackUsed behind spark screen KP3936-1 and pre-filter KP3935-1

Notes

Documented correction: a widely-circulated research report cited "KP3934-2" as the Viking filter — that number does not appear in Lincoln's own parts table, which lists KP3424-2 / KP3424-6. Exactly the class of error this database exists to prevent.

Record sources

Evidence — dated sources
  1. [01] www.weldersupply.com manufacturer manual 2026-07-04