PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

90520Valve,expansion

Parker-Hannifin Corp Div Fluid Control Division · NSN 4820-00-286-9897 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-286-9897 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-286-9897. Primary manufacturer part number: 90520.
Features
  • Valve,expansion — FSC 4820
  • Valve Equalizer Location: INTERNAL
  • Mounting Method: CLAMP BULB
  • Material: STEEL FLOW CONTROL DEVICE
  • First End Style Designator: FLARED
  • Valve Expansion Control Type: THERMOSTATIC
  • Bulb Diameter: 0.385 INCHES NOMINAL IN
  • Second End Thread Direction: RIGHT-HAND
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Flow Control Device construction
General Description

The Valve,expansion, cataloged under National Stock Number 4820-00-286-9897, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corp Div Fluid Control Division. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-286-9897
Primary Part Number90520
Item NameValve,expansion
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker-Hannifin Corp Div Fluid Control Division
StatusACTIVE
Valve Equalizer LocationINTERNAL
Mounting MethodCLAMP BULB
MaterialSTEEL FLOW CONTROL DEVICE
First End Style DesignatorFLARED
Valve Expansion Control TypeTHERMOSTATIC
Bulb Diameter0.385 INCHES NOMINAL IN
Second End Thread DirectionRIGHT-HAND
Valve Evaporator Temp Range DesignationHIGH
Media for Which DesignedREFRIGERANT 12
Second End Outside Diameter Tube Accommodated0.250 INCHES NOMINAL IN
Second End Connection TypeTHREADED EXTERNAL TUBE
Bulb Length2.625 INCHES NOMINAL IN
First End Seat Angle in Deg45.0
Second End Relationship with First EndNOT IDENTICAL
First End Outside Diameter Tube Accommodated0.500 INCHES NOMINAL IN
Capillary Tube Length60.000 INCHES NOMINAL IN
Furnished ItemsFILTER SCREEN
Second End Thread Class2A A
MaterialSTEEL SEAT
First End Connection TypeTHREADED EXTERNAL TUBE
Second End Seat Angle in Deg45.0
MaterialCOPPER ALLOY BODY
End Connection Quantity2
Valve Pressure Limiting DeviceNOT INCLUDED
Flow Control DeviceBALL AND NEEDLE
First End Thread Class2A A
First End Thread DirectionRIGHT-HAND
Body StyleANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS
Second End Style DesignatorFLARED
Bulb Media TypeREFRIGERANT 12
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3030-00-294-7709 INTERCHANGEABLE
Belt,v
4920-01-297-975090520 INTERCHANGEABLE
Test Program Set
Textron Systems Corporation Dba Textron Systems Corp
6525-01-470-594590520 INTERCHANGEABLE
L Arm Assembly
Air Techniques, Inc.
Cross-Reference Index
Part NumberManufacturer
90520 Parker-Hannifin Corp Div Fluid Control Division (USA)
9001-2FC Parker-Hannifin Corp Div Fluid Control Division (USA)
D2FW3/8X1/2 Parker-Hannifin Corporation Dba Mobile Climate Systems Division Div Mobile Climate Systems Division (USA)
Related Parts
3030-00-294-7709INTERCHANGEABLE
BELT,V
4920-01-297-9750INTERCHANGEABLE
TEST PROGRAM SET
90520
6525-01-470-5945INTERCHANGEABLE
L ARM ASSEMBLY
90520

Frequently Asked Questions

What is NSN 4820-00-286-9897?

NSN 4820-00-286-9897 is a Valve,expansion, manufactured by Parker-Hannifin Corp Div Fluid Control Division, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-286-9897?

NSN 4820-00-286-9897 has 3 cross-referenced part numbers: 90520 (Parker-Hannifin Corp Div Fluid Control Division), 9001-2FC (Parker-Hannifin Corp Div Fluid Control Division), D2FW3/8X1/2 (Parker-Hannifin Corporation Dba Mobile Climate Systems Division Div Mobile Climate Systems Division).

What NSN replaces 4820-00-286-9897?

There are 3 known substitutes for 4820-00-286-9897: 3030-00-294-7709, 4920-01-297-9750, 6525-01-470-5945. Verify interchangeability with system specifications before substitution.

What are the specifications of 90520?

Key specifications for 90520: Valve Equalizer Location: INTERNAL; Mounting Method: CLAMP BULB; Material: STEEL FLOW CONTROL DEVICE; First End Style Designator: FLARED. 30 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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