PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9128-7418-72Valve,safety Relief

Mathers Mechanical Llc · NSN 4820-01-253-3550 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-253-3550 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-253-3550. Primary manufacturer part number: 9128-7418-72.
Features
  • Valve,safety Relief — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Mathers Mechanical Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-253-3550, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mathers Mechanical Llc. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 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)
ManufacturersMathers Mechanical Llc (CAGE 63888); Windham Lifts Inc (CAGE 62080)
Technical Specifications
ParameterValue
NSN4820-01-253-3550
Primary Part Number9128-7418-72
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMathers Mechanical Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-072-7684LA1559 INTERCHANGEABLE
Valve,flow Control
Viking Pump, Inc
2530-00-073-3465280212 INTERCHANGEABLE
Valve,relay,air Pressure
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5950-00-137-8640 INTERCHANGEABLE
Transformer,power
5950-00-532-7031541-1390-002 INTERCHANGEABLE
Coil,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4140-00-625-1780021197 INTERCHANGEABLE
Fan,centrifugal
Rotron Incorporated
4730-00-928-831911661 INTERCHANGEABLE
Coupler
Mcneil Ohio Corp
4730-01-009-0989 INTERCHANGEABLE
Coupling,pipe
5330-01-054-240511661 INTERCHANGEABLE
Gasket
Paccar Winch Inc Dba Paccar Winch Division
5330-01-083-2141970320538 INTERCHANGEABLE
Gasket
Altec Industries Inc Eastern Div
6220-01-204-355811661 INTERCHANGEABLE
Insert
Grimes Aerospace Company
Cross-Reference Index
Part NumberManufacturer
9128-7418-72 Mathers Mechanical Llc (USA)
11552D Mathers Mechanical Llc (USA)
11661 Windham Lifts Inc (USA)
Related Parts
4820-00-072-7684INTERCHANGEABLE
VALVE,FLOW CONTROL
LA1559
2530-00-073-3465INTERCHANGEABLE
VALVE,RELAY,AIR PRESSURE
280212
5950-00-137-8640INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-532-7031INTERCHANGEABLE
COIL,RADIO FREQUENCY
541-1390-002
4140-00-625-1780INTERCHANGEABLE
FAN,CENTRIFUGAL
021197
4730-00-928-8319INTERCHANGEABLE
COUPLER
11661
4730-01-009-0989INTERCHANGEABLE
COUPLING,PIPE
5330-01-054-2405INTERCHANGEABLE
GASKET
11661
5330-01-083-2141INTERCHANGEABLE
GASKET
970320538
6220-01-204-3558INTERCHANGEABLE
INSERT
11661
4820-01-252-7930INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
4820-01-252-8457INTERCHANGEABLE
PARTS KIT,VALVE

Frequently Asked Questions

What is NSN 4820-01-253-3550?

NSN 4820-01-253-3550 is a Valve,safety Relief, manufactured by Mathers Mechanical Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-253-3550?

NSN 4820-01-253-3550 has 3 cross-referenced part numbers: 9128-7418-72 (Mathers Mechanical Llc), 11552D (Mathers Mechanical Llc), 11661 (Windham Lifts Inc).

What NSN replaces 4820-01-253-3550?

There are 12 known substitutes for 4820-01-253-3550: 4820-00-072-7684, 2530-00-073-3465, 5950-00-137-8640 and 9 more. Verify interchangeability with system specifications before substitution.

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