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6543003 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6543003: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include style_designator: STRAIGHT THRU, end_item_identification: VACUUM INTERFACE UNIT 2 L, media_for_which_designed: WASTE PRODUCT SINGLE RESPONSE, part_name_assigned_by_controlling_agency: DISCHARGE VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-694-0748, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
6543003
NSN: 4820-01-694-0748
FSC: 4820 — Valves, Nonpowered
CAGE: 58568 — ENVIROVAC INC DBA MONOGRAM SYSTEMS-ROCKFORD DIV (USA)
SPECIFICATIONS
style_designatorSTRAIGHT THRU
end_item_identificationVACUUM INTERFACE UNIT 2 L
media_for_which_designedWASTE PRODUCT SINGLE RESPONSE
part_name_assigned_by_controlling_agencyDISCHARGE VALVE
NSN4820-01-694-0748
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6543003 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MEDIA FOR WHICH DESIGNED: WASTE PRODUCT SINGLE RESPONSE
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU
MEDIA FOR WHICH DESIGNEDWASTE PRODUCT SINGLE RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYDISCHARGE VALVE
END ITEM IDENTIFICATIONVACUUM INTERFACE UNIT 2 L
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6543003?
6543003 is a VALVE,SAFETY RELIEF.
What is the NSN for 6543003?
6543003 is cataloged in the U.S. Government catalog under NSN 4820-01-694-0748. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.