PartsTable TECHNICAL DATA SHEET

NSN 4820-00-620-8500Government record, cited

Disk, Valve4820-00-620-8500

NSN 4820-00-620-8500 · NIIN 006208500 · Part number 55D208

Derbyshire Machine & Tool Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 71905

Government record, cited

NSN 4820-00-620-8500 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-620-8500. Manufacturer of record part number: 55D208.

Also searched as 4820-00-620-8500 · 4820006208500 · NIIN 006208500 · 00-620-8500 · FSC 4820 Valves, Nonpowered · CAGE 71905 · 55D208 · DD445S5501-15PC6 · DD445S5501-35PC3

Nearby stock numbers ← 4820-00-620-8496 · 4820-00-620-8501 Seat, Valve →

4820-00-620-8500 — Valves, Nonpowered

Features

Disk,valve — FSC 4820
Media for Which Designed: WATER
1 manufacturer part number on file
Manufacturer of record: Derbyshire Machine & Tool Co

Identification

NSN: 4820-00-620-8500
NIIN: 006208500
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 55D208
Manufacturer: Derbyshire Machine & Tool Co

General Description

The Disk,valve, cataloged under National Stock Number 4820-00-620-8500, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-00-620-8500
Primary Part Number	55D208
Item Name	Disk,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Derbyshire Machine & Tool Co
Status	ACTIVE
Media for Which Designed	WATER

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

Cross-Reference Index

Part Number	Manufacturer
55D208 PRIMARY	Derbyshire Machine & Tool Co (USA)

Reference documents

Reference	Meaning
DD445S5501-15PC6	5/2 Secondary reference U.S. Government activity
DD445S5501-35PC3	5/2 Secondary reference U.S. Government activity

No interchangeability data on file.

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

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-00-620-8500?

NSN 4820-00-620-8500 is a Disk,valve, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-00-620-8500?

NSN 4820-00-620-8500 has 1 manufacturer part number on file: 55D208 (Derbyshire Machine & Tool Co).

What are the specifications of 55D208?

Key specifications for 55D208: Media for Which Designed: WATER. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-00-620-8500 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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