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EM-1103 — VALVE,LINEAR,DIRECTIONAL CONTROL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

EM-1103: VALVE,LINEAR,DIRECTIONAL CONTROL.

VALVE,LINEAR,DIRECTIONAL CONTROL. Key specifications include valve_operation_method: AIR, end_item_identification: TRAILER,BOAT CAP 24000LBS 3 AXLE 3410 DAUNTLESS LBS, part_name_assigned_by_controlling_agency: VALVE, EMERGENCY SPOOL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-539-8515, 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
EM-1103
NSN: 4820-01-539-8515
FSC: 4820 — Valves, Nonpowered
CAGE: 0Z899 — BLUDOT INC (USA)
SPECIFICATIONS
spool_quantity1
valve_operation_methodAIR
end_connection_quantity4
end_item_identificationTRAILER,BOAT CAP 24000LBS 3 AXLE 3410 DAUNTLESS LBS
part_name_assigned_by_controlling_agencyVALVE, EMERGENCY SPOOL
NSN4820-01-539-8515
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: EM-1103 · 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
•
END CONNECTION QUANTITY: 4
•
SPOOL QUANTITY: 1
•
VALVE OPERATION METHOD: AIR
TECHNICAL CHARACTERISTICS
END CONNECTION QUANTITY4
SPOOL QUANTITY1
PART NAME ASSIGNED BY CONTROLLING AGENCYVALVE, EMERGENCY SPOOL
END ITEM IDENTIFICATIONTRAILER,BOAT CAP 24000LBS 3 AXLE 3410 DAUNTLESS LBS
VALVE OPERATION METHODAIR
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is EM-1103?
EM-1103 is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What is the NSN for EM-1103?
EM-1103 is cataloged in the U.S. Government catalog under NSN 4820-01-539-8515. 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.