The Vent Unit,relief, cataloged under National Stock Number 4930-01-573-6804, is classified within Federal Supply Class 4930 (Lubrication and Fuel Dispensing Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Isometrics Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4930-01-573-6804 |
| Primary Part Number | PV26363ALB |
| Item Name | Vent Unit,relief |
| FSC / FSG | 4930 / 49 — Lubrication and Fuel Dispensing Equipment |
| Manufacturer | Isometrics Inc |
| Status | ACTIVE |
| Supplementary Features | OPENING PRESSURE 1 PSIG; VENTING CAPACITY AIR 51,000 CU FT HR/3 PSIG |
| Material | ALUMINUM AND RUBBER NATURAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| PV26363ALB PRIMARY | Isometrics Inc (USA) |
NSN 4930-01-573-6804 is a Vent Unit,relief, manufactured by Isometrics Inc, classified under FSC 4930, Lubrication and Fuel Dispensing Equipment. Status: active.
NSN 4930-01-573-6804 has 1 manufacturer part number on file: PV26363ALB (Isometrics Inc).
Key specifications for PV26363ALB: Supplementary Features: OPENING PRESSURE 1 PSIG; VENTING CAPACITY AIR 51,000 CU FT HR/3 PSIG; Special Features: VENT IS DESIGNED TO BOLT TO A STANDARD 4IN TIMA OUTLET FLANGE: ITEM INCLUDES BODY (ALUMINUM) P/N 26382AL ; DISC HOLDER ASSEMBLY (ALUM/BUNA-N) P/N 17210AB; SPRING (STEEL E COATED) P/N 17192EY; STEM (STAINLESS) P/N 17204SL; SPRING RETAINER (ALUMINUM) P/N 17051AL; SPIROL PIN 3/16 X 1 (STAINLESS) P/N 9Q5901; HEX NUT 3/8-16UNC-2A THD (STAINLESS) P/N 9Q5809 A; Part Name Assigned by Controlling Agency: VAPOR SYSTEM VENT; OUTBREATHING VENT; VENT, AUXILLIARY; End Item Identification: SERVICING EQUIPMENT GROUP; FUEL SERVICING UNIT SERVICING GROUP. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.