PartsTable TECHNICAL DATA SHEET

NSN 4820-01-503-4989Government record, cited

Valve, Safety Relief4820-01-503-4989

NSN 4820-01-503-4989 · NIIN 015034989 · Part number C98-T225M0-034

National Oilwell · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 11836

Government record, cited

NSN 4820-01-503-4989 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-503-4989. Manufacturer of record part number: C98-T225M0-034.

Also searched as 4820-01-503-4989 · 4820015034989 · NIIN 015034989 · 01-503-4989 · FSC 4820 Valves, Nonpowered · CAGE 11836 · C98-T225M0-034 · 998-01620-022

Nearby stock numbers ← 4820-01-503-4905 · 4820-01-503-5006 Piston, Valve →

4820-01-503-4989 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
1 manufacturer part number on file
Manufacturer of record: National Oilwell

Identification

NSN: 4820-01-503-4989
NIIN: 015034989
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: C98-T225M0-034
Manufacturer: National Oilwell

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-503-4989, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is National Oilwell. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4820-01-503-4989
Primary Part Number	C98-T225M0-034
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	National Oilwell
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

Part Number	Manufacturer
C98-T225M0-034 PRIMARY	National Oilwell (USA)

Reference documents

Reference	Meaning
998-01620-022	5/9 Secondary reference National Oilwell
C98-T225M0-034	3/9 Design control — primary reference National Oilwell Varco Inc Dba National Oilwell

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 4820-01-503-4989?

NSN 4820-01-503-4989 is a Valve,safety Relief, manufactured by National Oilwell, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-503-4989?

NSN 4820-01-503-4989 has 1 manufacturer part number on file: C98-T225M0-034 (National Oilwell).

What are the specifications of C98-T225M0-034?

Key specifications for C98-T225M0-034: End Item Identification: REVERSE OSMOSIS WATER PURIFICATION UNIT. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-503-4989 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.

PartsTable Design LLC · partstable.com