NSN 4820-01-147-9080 · NIIN 011479080 · Part number 77737234-501
Triumph Thermal Systems - Maryland, Inc. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 01359
Government record, cited
NSN 4820-01-147-9080 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-147-9080. Manufacturer of record part number: 77737234-501.
Also searched as4820-01-147-9080 ·
4820011479080 ·
NIIN 011479080 ·
01-147-9080 ·
FSC 4820 Valves, Nonpowered · CAGE 01359 · 77737234-501
General Characteristics Item Description: 1.90 IN. LG; NICKEL RUPTURE DISC; BURST POINT 307.0 PSI IN
1 manufacturer part number on file
Manufacturer of record: Triumph Thermal Systems - Maryland, Inc.
Identification
NSN: 4820-01-147-9080
NIIN: 011479080
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 77737234-501
Manufacturer: Triumph Thermal Systems - Maryland, Inc.
General Description
The Safety Head Assembly, cataloged under National Stock Number 4820-01-147-9080, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 1 specification, 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
4820-01-147-9080
Primary Part Number
77737234-501
Item Name
Safety Head Assembly
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Triumph Thermal Systems - Maryland, Inc.
Status
ACTIVE
General Characteristics Item Description
1.90 IN. LG; NICKEL RUPTURE DISC; BURST POINT 307.0 PSI IN
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 4820-01-147-9080?
NSN 4820-01-147-9080 is a Safety Head Assembly, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-147-9080?
NSN 4820-01-147-9080 has 1 manufacturer part number on file: 77737234-501 (Triumph Thermal Systems - Maryland, Inc.).
What are the specifications of 77737234-501?
Key specifications for 77737234-501: General Characteristics Item Description: 1.90 IN. LG; NICKEL RUPTURE DISC; BURST POINT 307.0 PSI IN; End Item Identification: COMPRESSOR UNIT,REFRIGERATION HD-1019/AVQ-26. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-147-9080 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.