Valve, Expansion4820-01-420-6912

NSN 4820-01-420-6912 · NIIN 014206912 · Part number TIR55HW

Emerson Electric Co Alco Controls Div · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 70255

Government record, cited

NSN 4820-01-420-6912 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-420-6912. Manufacturer of record part number: TIR55HW.

Also searched as 4820-01-420-6912 · 4820014206912 · NIIN 014206912 · 01-420-6912 · FSC 4820 Valves, Nonpowered · CAGE 70255 · TIR55HW

Nearby stock numbers ← 4820-01-420-6288 Shaft, Disc, Valve · 4820-01-420-6913 Body, Valve →

4820-01-420-6912 — Valves, Nonpowered

Features

Valve,expansion — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Emerson Electric Co Alco Controls Div

Identification

NSN: 4820-01-420-6912
NIIN: 014206912
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: TIR55HW
Manufacturer: Emerson Electric Co Alco Controls Div

General Description

The Valve,expansion, cataloged under National Stock Number 4820-01-420-6912, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Electric Co Alco Controls Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-420-6912
Primary Part Number	TIR55HW
Item Name	Valve,expansion
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Emerson Electric Co Alco Controls 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
TIR55HW PRIMARY	Emerson Electric Co Alco Controls Div (USA)

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 4820-01-420-6912?

NSN 4820-01-420-6912 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-420-6912?

NSN 4820-01-420-6912 has 1 manufacturer part number on file: TIR55HW (Emerson Electric Co Alco Controls Div).

What are the specifications of TIR55HW?

Key specifications for TIR55HW: Special Features: R-22 TONS, 100 PSI, 55 PRESSURE; REMOTE BULB TUBE LENGTH - 10 FT; 1/4 INCH SAE EXTERNAL EQUALIZER IN; End Item Identification: THERMOSTATIC EXPANSION VALVE TIR55H, EMERSON ELECTRIC CO. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-420-6912 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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