PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R4120C148Valve,expansion

Unifab Industries Inc · NSN 4820-00-088-6786 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-088-6786 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-088-6786. Primary manufacturer part number: R4120C148.
Features
  • Valve,expansion — FSC 4820
  • Valve Equalizer Connection Diameter: 0.250 INCHES NOMINAL IN
  • Material: STEEL SEAT
  • Mounting Method: WELL BULB
  • Flow Control Device: NEEDLE
  • Material: STEEL FLOW CONTROL DEVICE
  • Capillary Tube Length: 5.000 INCHES NOMINAL IN
  • Valve Equalizer Connection Type: FLARED TUBE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Seat construction
General Description

The Valve,expansion, cataloged under National Stock Number 4820-00-088-6786, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Unifab Industries Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-088-6786
Primary Part NumberR4120C148
Item NameValve,expansion
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerUnifab Industries Inc
StatusCANCELLED
Valve Equalizer Connection Diameter0.250 INCHES NOMINAL IN
MaterialSTEEL SEAT
Mounting MethodWELL BULB
Flow Control DeviceNEEDLE
MaterialSTEEL FLOW CONTROL DEVICE
Capillary Tube Length5.000 INCHES NOMINAL IN
Valve Equalizer Connection TypeFLARED TUBE
Body StyleSTRAIGHT THRU
Temp Rating20.0 FAHRENHEIT DEGF
Media for Which DesignedREFRIGERANT 12
End Connection Quantity2
MaterialCOPPER ALLOY BODY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
3110-00-156-46901415B INTERCHANGEABLE
Bearing,ball,annular
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5315-00-682-1777MS16562-254 INTERCHANGEABLE
Pin,spring
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5815-00-708-38543346 INTERCHANGEABLE
Plunger
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
2990-00-929-145703346-0099 INTERCHANGEABLE
Muffler,exhaust
Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division
5935-01-084-6350 INTERCHANGEABLE
Connector,plug,electrical
4240-01-263-9348 INTERCHANGEABLE
Support,cylinder,breathing Appar
6530-01-305-91623346 INTERCHANGEABLE
Traction Apparatus,bone Fracture
Mizuho Orthopedic Systems, Inc. Dba Mizuho Orthopedic Systems Inc
6850-01-450-7945 INTERCHANGEABLE
Skin Protective Compound,chemica
5315-01-470-287460873 INTERCHANGEABLE
Pin,spring
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
R4120C148 Unifab Industries Inc (USA)
209FDEV60873 Singer Co the Controls Div (USA)
209F60873 Singer Co the Controls Div (USA)
209HS60873 Singer Co the Controls Div (USA)
60873 Singer Co the Controls Div (USA)
3346 Unifab Industries Inc (USA)
209H560873 Singer Co the Controls Div (USA)
Related Parts
3110-00-156-4690INTERCHANGEABLE
BEARING,BALL,ANNULAR
1415B
5315-00-682-1777INTERCHANGEABLE
PIN,SPRING
MS16562-254
5815-00-708-3854INTERCHANGEABLE
PLUNGER
3346
2990-00-929-1457INTERCHANGEABLE
MUFFLER,EXHAUST
03346-0099
5935-01-084-6350INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
4240-01-263-9348INTERCHANGEABLE
SUPPORT,CYLINDER,BREATHING APPAR
6530-01-305-9162INTERCHANGEABLE
TRACTION APPARATUS,BONE FRACTURE
3346
6850-01-450-7945INTERCHANGEABLE
SKIN PROTECTIVE COMPOUND,CHEMICA
5315-01-470-2874INTERCHANGEABLE
PIN,SPRING
60873

Frequently Asked Questions

What is NSN 4820-00-088-6786?

NSN 4820-00-088-6786 is a Valve,expansion, manufactured by Unifab Industries Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-088-6786?

NSN 4820-00-088-6786 has 7 cross-referenced part numbers: R4120C148 (Unifab Industries Inc), 209FDEV60873 (Singer Co the Controls Div), 209F60873 (Singer Co the Controls Div), 209HS60873 (Singer Co the Controls Div), 60873 (Singer Co the Controls Div) and 2 more.

What NSN replaces 4820-00-088-6786?

There are 9 known substitutes for 4820-00-088-6786: 3110-00-156-4690, 5315-00-682-1777, 5815-00-708-3854 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R4120C148?

Key specifications for R4120C148: Valve Equalizer Connection Diameter: 0.250 INCHES NOMINAL IN; Material: STEEL SEAT; Mounting Method: WELL BULB; Flow Control Device: NEEDLE. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-088-6786 still in active supply?

NSN 4820-00-088-6786 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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