Valve, Check4820-01-603-6504

NSN 4820-01-603-6504 · NIIN 016036504 · Part number EMTCSD6UWEY

Valco Instruments Co Inc Dba Valco Instruments Co Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 55637

Government record, cited

NSN 4820-01-603-6504 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-603-6504. Manufacturer of record part number: EMTCSD6UWEY.

Also searched as 4820-01-603-6504 · 4820016036504 · NIIN 016036504 · 01-603-6504 · FSC 4820 Valves, Nonpowered · CAGE 55637 · EMTCSD6UWEY

Nearby stock numbers ← 4820-01-603-6491 Valve, Check · 4820-01-603-6508 Valve, Check →

4820-01-603-6504 — Valves, Nonpowered

Features

Valve,check — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Valco Instruments Co Inc Dba Valco Instruments Co Inc

Identification

NSN: 4820-01-603-6504
NIIN: 016036504
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: EMTCSD6UWEY
Manufacturer: Valco Instruments Co Inc Dba Valco Instruments Co Inc

General Description

The Valve,check, cataloged under National Stock Number 4820-01-603-6504, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Valco Instruments Co Inc Dba Valco Instruments Co Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-603-6504
Primary Part Number	EMTCSD6UWEY
Item Name	Valve,check
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Valco Instruments Co Inc Dba Valco Instruments Co Inc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4820-01-611-7699 POSSIBLE MATCH

SMPL SEL VALVE SCV

Possible match (shared part number)

Cross-Reference Index

Part Number	Manufacturer
EMTCSD6UWEY PRIMARY	Valco Instruments Co Inc Dba Valco Instruments Co Inc (USA)

Related Parts

4820-01-611-7699POSSIBLE MATCH

SMPL SEL VALVE SCV

Frequently Asked Questions

What is NSN 4820-01-603-6504?

NSN 4820-01-603-6504 is a Valve,check, manufactured by Valco Instruments Co Inc Dba Valco Instruments Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-603-6504?

NSN 4820-01-603-6504 has 1 manufacturer part number on file: EMTCSD6UWEY (Valco Instruments Co Inc Dba Valco Instruments Co Inc).

What NSN replaces 4820-01-603-6504?

1 possible match (shared part number, not a government interchangeability claim): 4820-01-611-7699. Verify interchangeability with system specifications before substitution.

What are the specifications of EMTCSD6UWEY?

Key specifications for EMTCSD6UWEY: Part Name Assigned by Controlling Agency: SMPL SEL VALVE SCV1. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-603-6504 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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