PartsTable TECHNICAL DATA SHEET

NSN 4820-01-188-1901Government record, cited

Valve Assembly4820-01-188-1901

NSN 4820-01-188-1901 · NIIN 011881901 · Part number AH15-1720 AND H17-1283

Dresser Industries Inc Leroi Div · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 35301

Government record, cited

NSN 4820-01-188-1901 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-188-1901. Manufacturer of record part number: AH15-1720 AND H17-1283.

Also searched as 4820-01-188-1901 · 4820011881901 · NIIN 011881901 · 01-188-1901 · FSC 4820 Valves, Nonpowered · CAGE 35301 · AH15-1720 AND H17-1283 · AH15-1297

Nearby stock numbers ← 4820-01-188-1900 Valve, Safety Relief · 4820-01-188-1920 →

4820-01-188-1901 — Valves, Nonpowered

Features

Valve Assembly — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Dresser Industries Inc Leroi Div

Identification

NSN: 4820-01-188-1901
NIIN: 011881901
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: AH15-1720 AND H17-1283
Manufacturer: Dresser Industries Inc Leroi Div

General Description

The Valve Assembly, cataloged under National Stock Number 4820-01-188-1901, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dresser Industries Inc Leroi Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-188-1901
Primary Part Number	AH15-1720 AND H17-1283
Item Name	Valve Assembly
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Dresser Industries Inc Leroi Div
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
AH15-1720 AND H17-1283 PRIMARY	Dresser Industries Inc Leroi Div (USA)

Reference documents

Reference	Meaning
AH15-1297	C/1 Advisory reference — outside the item-of-supply concept Dresser Industries Inc Leroi Div

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 4820-01-188-1901?

NSN 4820-01-188-1901 is a Valve Assembly, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-188-1901?

NSN 4820-01-188-1901 has 1 manufacturer part number on file: AH15-1720 AND H17-1283 (Dresser Industries Inc Leroi Div).

What are the specifications of AH15-1720 AND H17-1283?

Key specifications for AH15-1720 AND H17-1283: Special Features: BRASS; VALVE,PIN. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-188-1901 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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