PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4915569-0Valve,safety Relief

Kalmar AC Inc · NSN 4820-01-158-8579 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-158-8579 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-158-8579. Primary manufacturer part number: 4915569-0.
Features
  • Valve,safety Relief — FSC 4820
  • Flow Control Device: BALL
  • Media for Which Designed: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
  • 3 verified cross-references
  • Primary manufacturer: Kalmar AC Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-158-8579, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Kalmar AC Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-158-8579
Primary Part Number4915569-0
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerKalmar AC Inc
StatusACTIVE
Flow Control DeviceBALL
Media for Which DesignedHYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4510-00-256-263925734 INTERCHANGEABLE
Spout,diverter,bath Tub
Chatham Brass Co Inc
5975-00-657-1544 INTERCHANGEABLE
Splice Sealing Kit
4920-00-757-39308962 INTERCHANGEABLE
Post,standoff,signa
Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto
5950-00-757-7659900123-123 INTERCHANGEABLE
Transformer,power
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3110-01-128-0277B-308 INTERCHANGEABLE
Bearing,roller,needle
Jtekt Bearings North America Llc Div Kbna - Ord 1
4520-01-221-9206195300 INTERCHANGEABLE
Heating Element,electrical,nonim
Low Temp Industries, Inc. Dba Low Temp Industries Inc
5950-01-276-3667L11-0004-002 INTERCHANGEABLE
Coil,radio Frequency
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
Cross-Reference Index
Part NumberManufacturer
4915569-0 PRIMARY Kalmar AC Inc (USA)
3J6650 Link-Belt Cranes, L.p., Lllp (USA)
8962 Eaton Corporation Div Eaton Fluid Power (USA)
Related Parts
4510-00-256-2639INTERCHANGEABLE
SPOUT,DIVERTER,BATH TUB
25734
5975-00-657-1544INTERCHANGEABLE
SPLICE SEALING KIT
4920-00-757-3930INTERCHANGEABLE
POST,STANDOFF,SIGNA
8962
5950-00-757-7659INTERCHANGEABLE
TRANSFORMER,POWER
900123-123
3110-01-128-0277INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
B-308
4520-01-221-9206INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
195300
5950-01-276-3667INTERCHANGEABLE
COIL,RADIO FREQUENCY
L11-0004-002

Frequently Asked Questions

What is NSN 4820-01-158-8579?

NSN 4820-01-158-8579 is a Valve,safety Relief, manufactured by Kalmar AC Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-158-8579?

NSN 4820-01-158-8579 has 3 cross-referenced part numbers: 4915569-0 (Kalmar AC Inc), 3J6650 (Link-Belt Cranes, L.p., Lllp), 8962 (Eaton Corporation Div Eaton Fluid Power).

What NSN replaces 4820-01-158-8579?

There are 7 known substitutes for 4820-01-158-8579: 4510-00-256-2639, 5975-00-657-1544, 4920-00-757-3930 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4915569-0?

Key specifications for 4915569-0: End Item Identification: ALLIS-CHALMER VALVE 8623951-4; Flow Control Device: BALL; Media for Which Designed: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE. 3 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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