PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

65554Parts Kit,valve

Hersey Equipment · NSN 4820-01-555-9012 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-555-9012 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-555-9012. Primary manufacturer part number: 65554.
Features
  • Parts Kit,valve — FSC 4820
  • End Item Name: REDUCED PRESSURE BACKFLOW PREVENTER
  • Model Number: FRP
  • 1 verified cross-reference
  • Primary manufacturer: Hersey Equipment
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Parts Kit,valve, cataloged under National Stock Number 4820-01-555-9012, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hersey Equipment. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-555-9012
Primary Part Number65554
Item NameParts Kit,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHersey Equipment
StatusACTIVE
End Item NameREDUCED PRESSURE BACKFLOW PREVENTER
Model NumberFRP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-011-2304 INTERCHANGEABLE
Plug,pipe
5306-00-282-0950 INTERCHANGEABLE
Bolt,machine
6640-00-403-934765554 INTERCHANGEABLE
Heater,extraction,petroleum Test
Precision Scientific Petroleum Instruments Co
4310-01-006-3560 INTERCHANGEABLE
Support Housing Front
3910-01-216-776465554 INTERCHANGEABLE
Roller,conveyor
Adams Rite Aerospace, Inc
Cross-Reference Index
Part NumberManufacturer
65554 PRIMARY Hersey Equipment (USA)
Related Parts
4730-00-011-2304INTERCHANGEABLE
PLUG,PIPE
5306-00-282-0950INTERCHANGEABLE
BOLT,MACHINE
6640-00-403-9347INTERCHANGEABLE
HEATER,EXTRACTION,PETROLEUM TEST
65554
4310-01-006-3560INTERCHANGEABLE
SUPPORT HOUSING FRONT
3910-01-216-7764INTERCHANGEABLE
ROLLER,CONVEYOR
65554

Frequently Asked Questions

What is NSN 4820-01-555-9012?

NSN 4820-01-555-9012 is a Parts Kit,valve, manufactured by Hersey Equipment, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-555-9012?

NSN 4820-01-555-9012 has 1 cross-referenced part number: 65554 (Hersey Equipment).

What NSN replaces 4820-01-555-9012?

There are 5 known substitutes for 4820-01-555-9012: 4730-00-011-2304, 5306-00-282-0950, 6640-00-403-9347 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 65554?

Key specifications for 65554: Special Features: KIT INCLUDES CASE GASKET; SECOND CHECK VALVE ASSEMBLY; CHECK VALVE O-RINGS (2); FIRST CHECK VALVE ASSEMBLY; MOUNTING SCREWS (4); RELIEF VALVE ASSEMBLY; RELIEF VALVE O-RING; End Item Name: REDUCED PRESSURE BACKFLOW PREVENTER; Part Name Assigned by Controlling Agency: COMPLETE VALVE KIT FRP I, 3/4-1 INCH IN; Model Number: FRP. 5 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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