PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18993Valve,stop-Check

Yellow Jacket Movers Inc · NSN 4820-01-687-8158 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-687-8158 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-687-8158. Primary manufacturer part number: 18993.
Features
  • Valve,stop-Check — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Yellow Jacket Movers Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,stop-Check, cataloged under National Stock Number 4820-01-687-8158, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Yellow Jacket Movers Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-687-8158
Primary Part Number18993
Item NameValve,stop-Check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerYellow Jacket Movers Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2510-00-845-011222017533 INTERCHANGEABLE
Shock Absorber,direct Action
General Motors Llc Dba General Motors Llc
4730-00-852-3331227221 INTERCHANGEABLE
Clamp,hose
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
5340-01-101-4285 INTERCHANGEABLE
Handle
5998-01-252-22746163075-1 INTERCHANGEABLE
Circuit Card Assembly
Naval Sea Systems Command
5330-01-377-9854807170-42 NON-ASBESTOS INTERCHANGEABLE
Gasket
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5935-01-495-360518993 INTERCHANGEABLE
Connector,plug,electrical
Times Microwave Systems, Inc Dba Times Microwave Systems Inc Div Times Microwave Systems
Cross-Reference Index
Part NumberManufacturer
18993 PRIMARY Yellow Jacket Movers Inc (USA)
Related Parts
2510-00-845-0112INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
22017533
4730-00-852-3331INTERCHANGEABLE
CLAMP,HOSE
227221
5340-01-101-4285INTERCHANGEABLE
HANDLE
5998-01-252-2274INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6163075-1
5330-01-377-9854INTERCHANGEABLE
GASKET
807170-42 NON-ASBESTOS
5935-01-495-3605INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
18993

Frequently Asked Questions

What is NSN 4820-01-687-8158?

NSN 4820-01-687-8158 is a Valve,stop-Check, manufactured by Yellow Jacket Movers Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-687-8158?

NSN 4820-01-687-8158 has 1 cross-referenced part number: 18993 (Yellow Jacket Movers Inc).

What NSN replaces 4820-01-687-8158?

There are 6 known substitutes for 4820-01-687-8158: 2510-00-845-0112, 4730-00-852-3331, 5340-01-101-4285 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18993?

Key specifications for 18993: Part Name Assigned by Controlling Agency: CORE DEPRESSOR VALVE; Special Features: 0.25 IN FEMALE FLAREX0.25 IN MALE FLARE;500 PSI WORKING PRESSURE;VALVE CONTROLS REFRIGERANT FLOW FROM ACCESS FITTING;CLOSES SCHRADER BEFORE DISCONNECTING;BACK SEAT VALVE FEATURE TO RETAIN GAS IN HOSE WHEN DISCONNICTING IN. 2 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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