PartsTable TECHNICAL DATA SHEET

NSN 4730-01-004-1955Government record, cited

Restrictor Unit, Fluid Flow4730-01-004-1955

NSN 4730-01-004-1955 · NIIN 010041955 · Part number 11/2IN.150LBS.DFA-A60(0.169)

Nicholson Steam Trap Inc · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 43791

Government record, cited

NSN 4730-01-004-1955 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-004-1955. Manufacturer of record part number: 11/2IN.150LBS.DFA-A60(0.169).

Also searched as 4730-01-004-1955 · 4730010041955 · NIIN 010041955 · 01-004-1955 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 43791 · 11/2IN.150LBS.DFA-A60(0.169) · D00L1F169D0ME · D00L1F169D0ME

Nearby stock numbers ← 4730-01-004-1954 Restrictor Unit, Fluid Flow · 4730-01-004-1957 Restrictor Unit, Fluid Flow →

4730-01-004-1955 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Restrictor Unit,fluid Flow — FSC 4730
Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Strainer Type and Quantity: 1 SCREEN
End Connection Component Type and Size for Which Designed: 1-1/2 IN.OD TUBE IN
Design Type: STRAIGHT
End Connection Type: UNTHREADED FEMALE ALL CONNECTIONS
Diameter: 3.750 INCHES NOMINAL IN
Valve Size: 1.500 INCHES IN

Identification

NSN: 4730-01-004-1955
NIIN: 010041955
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: 11/2IN.150LBS.DFA-A60(0.169)
Manufacturer: Nicholson Steam Trap Inc

General Description

The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-004-1955, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Nicholson Steam Trap Inc. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	4730-01-004-1955
Primary Part Number	11/2IN.150LBS.DFA-A60(0.169)
Item Name	Restrictor Unit,fluid Flow
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Manufacturer	Nicholson Steam Trap Inc
Status	ACTIVE
Pressure Rating	150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Strainer Type and Quantity	1 SCREEN
End Connection Component Type and Size for Which Designed	1-1/2 IN.OD TUBE IN
Design Type	STRAIGHT
End Connection Type	UNTHREADED FEMALE ALL CONNECTIONS
Diameter	3.750 INCHES NOMINAL IN
Valve Size	1.500 INCHES IN
Material	STEEL BODY
Material	STEEL CORROSION RESISTING SCREENING
Orifice Diameter	0.169 INCHES NOMINAL IN
End Connection Similarity	NOT IDENTICAL

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
11/2IN.150LBS.DFA-A60(0.169) PRIMARY	Nicholson Steam Trap Inc (USA)

Reference documents

Reference	Meaning
D00L1F169D0ME	5/9 Secondary reference Nicholson Steam Trap Inc
D00L1F169D0ME	5/9 Secondary reference Flexitallic Gasket Co Inc

No interchangeability data on file.

Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

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

4730-00-000-1895

4730-00-000-1895 · Item name not on file

4730-00-000-4289

4730-00-000-4289 · Item name not on file

4730-00-000-4445

4730-00-000-4445 · Item name not on file

4730-00-000-8373

4730-00-000-8373 · Item name not on file

4730-00-000-8897

4730-00-000-8897 · Item name not on file

4730-00-001-0007

4730-00-001-0007 · Item name not on file

4730-00-001-0008

COUPLING,TUBE

4730-00-001-0008

COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-004-1955?

NSN 4730-01-004-1955 is a Restrictor Unit,fluid Flow, manufactured by Nicholson Steam Trap Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-004-1955?

NSN 4730-01-004-1955 has 1 manufacturer part number on file: 11/2IN.150LBS.DFA-A60(0.169) (Nicholson Steam Trap Inc).

What are the specifications of 11/2IN.150LBS.DFA-A60(0.169)?

Key specifications for 11/2IN.150LBS.DFA-A60(0.169): Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Strainer Type and Quantity: 1 SCREEN; End Connection Component Type and Size for Which Designed: 1-1/2 IN.OD TUBE IN; Design Type: STRAIGHT. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-004-1955 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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