PartsTable TECHNICAL DATA SHEET
NSN 4820-01-433-2626Government record, cited

Valve, Safety Relief4820-01-433-2626

NSN 4820-01-433-2626 · NIIN 014332626 · Part number 11B256022
Combat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 59678
Government record, cited
NSN 4820-01-433-2626 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-433-2626. Manufacturer of record part number: 11B256022.
Also searched as  4820-01-433-2626 · 4820014332626 · NIIN 014332626 · 01-433-2626 · FSC 4820 Valves, Nonpowered · CAGE 59678 · 11B256022 · 9889K22
Nearby stock numbers  ·
Features
  • Valve,safety Relief — FSC 4820
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Connection Type: THREADED EXTERNAL PIPE ALL ENDS
  • Style Designator: ANGLE
  • Thread Direction: RIGHT-HAND ALL ENDS
  • Nominal Thread Size: 0.375 INCHES ALL ENDS IN
  • Maximum Operating Temp: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE
Identification
  • NSN: 4820-01-433-2626
  • NIIN: 014332626
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: 11B256022
  • Manufacturer: Combat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-433-2626, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Combat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-433-2626
Primary Part Number11B256022
Item NameValve,safety Relief
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerCombat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center
StatusACTIVE
Connection StylePLAIN (PIPE) ALL ENDS
Connection TypeTHREADED EXTERNAL PIPE ALL ENDS
Style DesignatorANGLE
Thread DirectionRIGHT-HAND ALL ENDS
Nominal Thread Size0.375 INCHES ALL ENDS IN
Maximum Operating Temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
MaterialSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MaterialCOPPER ALLOY BODY LINING
Thread Series DesignatorNPT ALL ENDS
Opening Pressure Setting125.0 POUNDS PER SQUARE INCH LBS
Valve Operation MethodAUTOMATIC OR MANUAL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
9889K22 Mcmaster-Carr Supply Co (USA)
11B256022 PRIMARY Combat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center (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 4820-01-433-2626?

NSN 4820-01-433-2626 is a Valve,safety Relief, manufactured by Combat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-433-2626?

NSN 4820-01-433-2626 has 2 manufacturer part numbers on file: 9889K22 (Mcmaster-Carr Supply Co), 11B256022 (Combat Capabilities Development Command Armaments Center Dba Us Army Combat Capabilities Development Command Armaments Center).

What are the specifications of 11B256022?

Key specifications for 11B256022: Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: ANGLE; Thread Direction: RIGHT-HAND ALL ENDS. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-433-2626 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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