PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D654-8SV1010-4Seat,valve

Gas Equipment Engineering Corporation, the Dba Geeco · NSN 4820-00-008-5087 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-008-5087 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-008-5087. Primary manufacturer part number: D654-8SV1010-4.
Features
  • Seat,valve — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
  • 11 verified cross-references
  • Primary manufacturer: Gas Equipment Engineering Corporation, the Dba Geeco
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-008-5087, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Gas Equipment Engineering Corporation, the Dba Geeco. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, 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
NSN4820-00-008-5087
Primary Part NumberD654-8SV1010-4
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGas Equipment Engineering Corporation, the Dba Geeco
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-00-491-9908 INTERCHANGEABLE
Seat,valve
4820-00-570-0032 INTERCHANGEABLE
Seat,valve
4820-01-145-944707420002127 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-435-3196 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
D654-8SV1010-4 Gas Equipment Engineering Corporation, the Dba Geeco (USA)
D654-8SV1010-4CP Naval Inventory Control Point Mechanicsburg (USA)
20199PC5 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
A7420-002-127 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
20199PC5 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
20199PC5CP Naval Inventory Control Point Mechanicsburg (USA)
A7420-002-127CP Naval Inventory Control Point Mechanicsburg (USA)
20282PC6 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
20282PC6 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
A7420-002-127 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
20282PC6CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
4820-00-491-9908INTERCHANGEABLE
SEAT,VALVE
4820-00-570-0032INTERCHANGEABLE
SEAT,VALVE
4820-01-145-9447INTERCHANGEABLE
SEAT,VALVE
07420002127
4820-01-435-3196INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 4820-00-008-5087?

NSN 4820-00-008-5087 is a Seat,valve, manufactured by Gas Equipment Engineering Corporation, the Dba Geeco, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-008-5087?

NSN 4820-00-008-5087 has 11 cross-referenced part numbers: D654-8SV1010-4 (Gas Equipment Engineering Corporation, the Dba Geeco), D654-8SV1010-4CP (Naval Inventory Control Point Mechanicsburg), 20199PC5 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), A7420-002-127 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20199PC5 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team) and 6 more.

What NSN replaces 4820-00-008-5087?

There are 4 known substitutes for 4820-00-008-5087: 4820-00-491-9908, 4820-00-570-0032, 4820-01-145-9447 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D654-8SV1010-4?

Key specifications for D654-8SV1010-4: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330; End Item Identification: VALVE RELF1.00IPS 10T 14 IPS FLGE BRZ; VALVE RELF 1.00IPS 25T 29IPS UN BRZ; VALVE RELF 1.00IPS 66T 75IPS UN BRZ; VALVE RELF 1.00IPS 106T 120IPS FLGE CRBNSTL; VALVE RELF 1.00IPS 181T 210IPS FLGE CRBNSTL. 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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