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81BM46-4LO — VALVE,SAFETY RELIEF,REMOTE CONTR

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

81BM46-4LO: VALVE,SAFETY RELIEF,REMOTE CONTR.

VALVE,SAFETY RELIEF,REMOTE CONTR. Key specifications include material: STEEL OVERALL, special_features: MADE FROM CARBON AND STAINLESS STEELS;, part_name_assigned_by_controlling_agency: PRESSURE RELIEF VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-708-3815, 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
81BM46-4LO
NSN: 4820-01-708-3815
FSC: 4820 — Valves, Nonpowered
CAGE: 4H540 — EMERSON ELECTRIC CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresMADE FROM CARBON AND STAINLESS STEELS;
part_name_assigned_by_controlling_agencyPRESSURE RELIEF VALVE
NSN4820-01-708-3815
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81BM46-4LO · 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
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESMADE FROM CARBON AND STAINLESS STEELS;
PART NAME ASSIGNED BY CONTROLLING AGENCYPRESSURE RELIEF VALVE
MATERIALSTEEL OVERALL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81BM46-4LO?
81BM46-4LO is a VALVE,SAFETY RELIEF,REMOTE CONTR.
What is the NSN for 81BM46-4LO?
81BM46-4LO is cataloged in the U.S. Government catalog under NSN 4820-01-708-3815. 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.