Cap Relief Valve4220-01-648-2437

NSN 4220-01-648-2437 · NIIN 016482437

FSC 4220 — Marine Lifesaving and Diving Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment

Government record, cited

Also searched as 4220-01-648-2437 · 4220016482437 · NIIN 016482437 · 01-648-2437 · FSC 4220 Marine Lifesaving and Diving Equipment · 4057596 · 4057596 CP · 4057596

Nearby stock numbers ← 4220-01-648-2432 Spring Larv · 4220-01-648-2440 Spring O2 Uba Pkg →

Features

Cap Relief Valve — FSC 4220

Identification

NSN: 4220-01-648-2437
NIIN: 016482437
FSC: 4220 — Marine Lifesaving and Diving Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment

General Description

The Cap Relief Valve, cataloged under National Stock Number 4220-01-648-2437, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4220-01-648-2437
Item Name	Cap Relief Valve
FSC / FSG	4220 / 42 — Marine Lifesaving and Diving Equipment
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

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
4057596	3/9 Design control — primary reference Draeger Safety, Inc.
4057596 CP	5/9 Secondary reference Draeger Safety, Inc.
4057596	C/1 Advisory reference — outside the item-of-supply concept Draeger Inc

No interchangeability data on file.

Other items in FSC 4220 — Marine Lifesaving and Diving Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4220-00-004-8880

4220-00-004-8880 · Item name not on file

4220-00-009-2854

DIVING EQUIPMENT SET

4220-00-012-3571

INFLATION ASSEMBLY,LIFE JACKET

4220-00-014-0183

4220-00-014-0183 · Item name not on file

4220-00-014-2097

CARTRIDGE,COMPRESSED GAS

4220-00-021-4979

COVER,RAFT

4220-00-021-9688

LANYARD ASSEMBLY

4220-00-022-1014

4220-00-022-1014 · Item name not on file

Frequently Asked Questions

What is NSN 4220-01-648-2437?

NSN 4220-01-648-2437 is a Cap Relief Valve, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.

What are the specifications of 4220-01-648-2437?

Key specifications for 4220-01-648-2437: Special Features: NHA - PRESSURE REDUCER MOD 2B; Part Name Assigned by Controlling Agency: CAP, RELIEF VALVE, LARV REDUCER SPPT; End Item Identification: MK25 MOD2 UBA. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4220-01-648-2437 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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