PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66242Valve,regulating,fluid Pressure

Fairchild Industrial Products Company · NSN 4820-01-121-2636 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-121-2636 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-121-2636. Primary manufacturer part number: 66242.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Thread Size and Series/type Designator: 1/4-18 NPT FIRST END
  • Material: STEEL COMP 316 BODY
  • Material Document and Classification: UNABLE TO DECODE
  • Media for Which Designed: GAS, NONCORROSIVE
  • First End Connection Type: THREADED INTERNAL PIPE
  • Body Style: STRAIGHT THRU
  • First End Style Designator: PLAIN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 316 Body construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-121-2636, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Fairchild Industrial Products Company. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-121-2636
Primary Part Number66242
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFairchild Industrial Products Company
StatusACTIVE
Thread Size and Series/type Designator1/4-18 NPT FIRST END
MaterialSTEEL COMP 316 BODY
Material Document and ClassificationUNABLE TO DECODE
Media for Which DesignedGAS, NONCORROSIVE
First End Connection TypeTHREADED INTERNAL PIPE
Body StyleSTRAIGHT THRU
First End Style DesignatorPLAIN
FilterNOT INCLUDED
Temp Rating-85.0 FAHRENHEIT MINIMUM AND 300.0 FAHRENHEIT MAXIMUM DEGF
Regulation TypeMANUAL SINGLE STAGE
Second End Relationship with First EndIDENTICAL
First End Thread DirectionRIGHT-HAND
Flow Control DeviceDIAPHRAGM
Manual Control MethodWRENCH
Outlet Pressure Range1.0 TO 60.0 CAMERA MOUNT
Valve Loading MethodSPRING
End Connection Quantity2
Maximum Inlet Pressure RatingERR-060
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6685-00-099-083166-527 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Thermo King Corporation Dba Phoenix Global Distirbution.
5330-00-882-369266242 INTERCHANGEABLE
Seal,plain Encased
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
3040-01-040-66706614-2 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
5998-01-414-378366242 INTERCHANGEABLE
Circuit Card Assembly
Viavi Solutionsllc
Cross-Reference Index
Part NumberManufacturer
66142 Fairchild Industrial Products Company (USA)
66242 PRIMARY Fairchild Industrial Products Company (USA)
Related Parts
6685-00-099-0831INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
66-527
5330-00-882-3692INTERCHANGEABLE
SEAL,PLAIN ENCASED
66242
3040-01-040-6670INTERCHANGEABLE
CONNECTING LINK,RIGID
6614-2
5998-01-414-3783INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
66242

Frequently Asked Questions

What is NSN 4820-01-121-2636?

NSN 4820-01-121-2636 is a Valve,regulating,fluid Pressure, manufactured by Fairchild Industrial Products Company, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-121-2636?

NSN 4820-01-121-2636 has 2 cross-referenced part numbers: 66142 (Fairchild Industrial Products Company), 66242 (Fairchild Industrial Products Company).

What NSN replaces 4820-01-121-2636?

There are 4 known substitutes for 4820-01-121-2636: 6685-00-099-0831, 5330-00-882-3692, 3040-01-040-6670 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66242?

Key specifications for 66242: Thread Size and Series/type Designator: 1/4-18 NPT FIRST END; Material: STEEL COMP 316 BODY; Material Document and Classification: UNABLE TO DECODE; Media for Which Designed: GAS, NONCORROSIVE. 18 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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