PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15677Valve,safety Relief

Tyco Fire Products Lp · NSN 4820-01-126-0072 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-126-0072 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-126-0072. Primary manufacturer part number: 15677.
Features
  • Valve,safety Relief — FSC 4820
  • Style Designator: CROSS
  • Connection Style: PLAIN (PIPE) FIRST END
  • 5 verified cross-references
  • Primary manufacturer: Tyco Fire Products Lp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-126-0072, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Fire Products Lp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-126-0072
Primary Part Number15677
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTyco Fire Products Lp
StatusCANCELLED
Style DesignatorCROSS
Connection StylePLAIN (PIPE) FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5330-00-112-0121 INTERCHANGEABLE
Seal,plain Encased
5950-00-248-6921SCC60715 INTERCHANGEABLE
Transformer,power
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6645-00-343-824915677 INTERCHANGEABLE
Clockcase Assy
The Chelsea Clock Llc
2940-00-497-6794AF493 INTERCHANGEABLE
Filter Element,intake Air Cleane
Cummins Filtration Inc Dba Fleetguard Div Cummins Inc
5325-00-795-9884A547042 INTERCHANGEABLE
Ring,retaining
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
1005-01-260-2639 INTERCHANGEABLE
Spring,magazine
8145-01-265-366215677 INTERCHANGEABLE
Shipping and Storage Container,e
Naval Inventory Control Point
5305-01-273-832915677 INTERCHANGEABLE
Screw,cap,socket Head
Sps Technologies, Llc Dba PB Fasteners
1095-01-364-030715677 INTERCHANGEABLE
Holster,pistol
Bianchi International Dba Bae Systems Products Group
Cross-Reference Index
Part NumberManufacturer
194426 Hyster-Yale Group, Inc. (USA)
15677 A-1 Fire Equipment Company Inc (USA)
194426 Bomag Americas, Inc. (USA)
15677 PRIMARY Tyco Fire Products Lp (USA)
15677 Materials Research Corp (USA)
Related Parts
5330-00-112-0121INTERCHANGEABLE
SEAL,PLAIN ENCASED
5950-00-248-6921INTERCHANGEABLE
TRANSFORMER,POWER
SCC60715
6645-00-343-8249INTERCHANGEABLE
CLOCKCASE ASSY
15677
2940-00-497-6794INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
AF493
5325-00-795-9884INTERCHANGEABLE
RING,RETAINING
A547042
1005-01-260-2639INTERCHANGEABLE
SPRING,MAGAZINE
8145-01-265-3662INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,E
15677
5305-01-273-8329INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
15677
1095-01-364-0307INTERCHANGEABLE
HOLSTER,PISTOL
15677

Frequently Asked Questions

What is NSN 4820-01-126-0072?

NSN 4820-01-126-0072 is a Valve,safety Relief, manufactured by Tyco Fire Products Lp, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-126-0072?

NSN 4820-01-126-0072 has 5 cross-referenced part numbers: 194426 (Hyster-Yale Group, Inc.), 15677 (A-1 Fire Equipment Company Inc), 194426 (Bomag Americas, Inc.), 15677 (Tyco Fire Products Lp), 15677 (Materials Research Corp).

What NSN replaces 4820-01-126-0072?

There are 9 known substitutes for 4820-01-126-0072: 5330-00-112-0121, 5950-00-248-6921, 6645-00-343-8249 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15677?

Key specifications for 15677: Style Designator: CROSS; Connection Style: PLAIN (PIPE) FIRST END; End Item Identification: MRAP - COMMON NSN - USED ON MRAP NO PERMANENT WSDC IDENTIFIED AND 5 OTHER WEAPON SYSTEMS. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-126-0072 still in active supply?

NSN 4820-01-126-0072 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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