Valve, Flow Control4820-01-537-9943

NSN 4820-01-537-9943 · NIIN 015379943 · Part number FC-51-1/2

Brand Hydraulics · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 19184

Government record, cited

NSN 4820-01-537-9943 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-537-9943. Manufacturer of record part number: FC-51-1/2.

Also searched as 4820-01-537-9943 · 4820015379943 · NIIN 015379943 · 01-537-9943 · FSC 4820 Valves, Nonpowered · CAGE 19184 · FC-51-1/2

Nearby stock numbers ← 4820-01-537-9879 Cap, Valve · 4820-01-538-0025 Valve, Float →

4820-01-537-9943 — Valves, Nonpowered

Features

Valve,flow Control — FSC 4820
Flow Control Device: SPOOL
Operating Pressure and Type: 3000.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED LBS
Connection Type: THREADED INTERNAL PIPE
End Connection Quantity: 3
Valve Size: 0.500 INCHES IN
Nominal Thread Size: 0.500 INCHES IN
Body Material: IRON CAST

Identification

NSN: 4820-01-537-9943
NIIN: 015379943
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: FC-51-1/2
Manufacturer: Brand Hydraulics

General Description

The Valve,flow Control, cataloged under National Stock Number 4820-01-537-9943, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Brand Hydraulics. Government technical data includes 12 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-537-9943
Primary Part Number	FC-51-1/2
Item Name	Valve,flow Control
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Brand Hydraulics
Status	ACTIVE
Flow Control Device	SPOOL
Operating Pressure and Type	3000.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED LBS
Connection Type	THREADED INTERNAL PIPE
End Connection Quantity	3
Valve Size	0.500 INCHES IN
Nominal Thread Size	0.500 INCHES IN
Body Material	IRON CAST
Thread Class	2B
Pressure Class	ERR-060
Thread Quantity Per Inch	14
Thread Series Designator	NPT
Valve Operation Method	AUTOMATIC AND MANUAL

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
FC-51-1/2 PRIMARY	Brand Hydraulics (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 4820-01-537-9943?

NSN 4820-01-537-9943 is a Valve,flow Control, manufactured by Brand Hydraulics, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-537-9943?

NSN 4820-01-537-9943 has 1 manufacturer part number on file: FC-51-1/2 (Brand Hydraulics).

What are the specifications of FC-51-1/2?

Key specifications for FC-51-1/2: Flow Control Device: SPOOL; Operating Pressure and Type: 3000.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED LBS; Connection Type: THREADED INTERNAL PIPE; End Connection Quantity: 3. 12 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-537-9943 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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