PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1120-101Valve,safety Relief

R & D Machine Rafael Anaya Div Defense Logistics Agency · NSN 4820-01-311-7878 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-311-7878 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-311-7878. Primary manufacturer part number: 1120-101.
Features
  • Valve,safety Relief — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: R & D Machine Rafael Anaya Div Defense Logistics Agency
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-311-7878, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is R & D Machine Rafael Anaya Div Defense Logistics Agency. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersR & D Machine Rafael Anaya Div Defense Logistics Agency (CAGE 8W880)
Technical Specifications
ParameterValue
NSN4820-01-311-7878
Primary Part Number1120-101
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerR & D Machine Rafael Anaya Div Defense Logistics Agency
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2990-01-209-459835619 INTERCHANGEABLE
Cap Assembly,protective,muffler-
Balkamp Inc
5895-01-457-6468112010-1 INTERCHANGEABLE
Modem,communications
L3 Technologies, Inc. Div Communication Systems-West
Cross-Reference Index
Part NumberManufacturer
1120-101 PRIMARY R & D Machine Rafael Anaya Div Defense Logistics Agency (USA)
1000-002 ITEM 10 R & D Machine Rafael Anaya Div Defense Logistics Agency (USA)
Related Parts
2990-01-209-4598INTERCHANGEABLE
CAP ASSEMBLY,PROTECTIVE,MUFFLER-
35619
5895-01-457-6468INTERCHANGEABLE
MODEM,COMMUNICATIONS
112010-1

Frequently Asked Questions

What is NSN 4820-01-311-7878?

NSN 4820-01-311-7878 is a Valve,safety Relief, manufactured by R & D Machine Rafael Anaya Div Defense Logistics Agency, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-311-7878?

NSN 4820-01-311-7878 has 2 cross-referenced part numbers: 1120-101 (R & D Machine Rafael Anaya Div Defense Logistics Agency), 1000-002 ITEM 10 (R & D Machine Rafael Anaya Div Defense Logistics Agency).

What NSN replaces 4820-01-311-7878?

There are 2 known substitutes for 4820-01-311-7878: 2990-01-209-4598, 5895-01-457-6468. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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