PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100548Valve,safety Relief

American Turbo Systems Inc · NSN 4820-01-125-9336 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-125-9336 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-125-9336. Primary manufacturer part number: 100548.
Features
  • Valve,safety Relief — FSC 4820
  • Flange Shape: ROUND WITH HOLES FIRST END
  • Valve Operation Method: AUTOMATIC
  • Style Designator: SAFETY RELIEF
  • Flange Face Design: PLAIN FIRST END
  • Connection Type: FLANGE FIRST END
  • Bolt Hole Quantity: 6 FIRST END
  • Flow Control Device: PISTON
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-125-9336, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is American Turbo Systems Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-125-9336
Primary Part Number100548
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAmerican Turbo Systems Inc
StatusACTIVE
Flange ShapeROUND WITH HOLES FIRST END
Valve Operation MethodAUTOMATIC
Style DesignatorSAFETY RELIEF
Flange Face DesignPLAIN FIRST END
Connection TypeFLANGE FIRST END
Bolt Hole Quantity6 FIRST END
Flow Control DevicePISTON
Disk Loading MethodSPRING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-00-004-7591919483-17 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
100548 Walker Power Systems, Inc. Dba Tiernay Turbines (USA)
100548 PRIMARY American Turbo Systems Inc (USA)
Related Parts
5950-00-004-7591INTERCHANGEABLE
COIL,RADIO FREQUENCY
919483-17

Frequently Asked Questions

What is NSN 4820-01-125-9336?

NSN 4820-01-125-9336 is a Valve,safety Relief, manufactured by American Turbo Systems Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-125-9336?

NSN 4820-01-125-9336 has 2 cross-referenced part numbers: 100548 (Walker Power Systems, Inc. Dba Tiernay Turbines), 100548 (American Turbo Systems Inc).

What NSN replaces 4820-01-125-9336?

There is 1 known substitute for 4820-01-125-9336: 5950-00-004-7591. Verify interchangeability with system specifications before substitution.

What are the specifications of 100548?

Key specifications for 100548: Flange Shape: ROUND WITH HOLES FIRST END; Valve Operation Method: AUTOMATIC; Style Designator: SAFETY RELIEF; Flange Face Design: PLAIN FIRST END. 8 total characteristics are documented in the Federal Logistics Information System.

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