PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3BF.1Repair Kit,valve

Val-Matic Valve and Manufacturing Corporation · NSN 4820-01-465-5256 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-465-5256 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-465-5256. Primary manufacturer part number: 3BF.1.
Features
  • Repair Kit,valve — FSC 4820
  • Valve Type for Which Designed: CHECK
  • Valve Model Number for Which Designed: 503NX001
  • Supply Items and Quantities: 61447 P/N 6 BACKFLOW BUSHING-1; P/N 7 BACKFLOW ROD-1; P/N 8 ROD WIPER-1; P/N 9 O-RING SEAL-1; P/N 10 HANDLE-1; P/N 11 JAM NUT-1; P/N 12 RETAINING RING-1
  • Component Quantity: 7
  • Valve Size for Which Designed: 3.000 INCHES IN
  • 3 verified cross-references
  • Primary manufacturer: Val-Matic Valve and Manufacturing Corporation
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Repair Kit,valve, cataloged under National Stock Number 4820-01-465-5256, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Val-Matic Valve and Manufacturing Corporation. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-465-5256
Primary Part Number3BF.1
Item NameRepair Kit,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerVal-Matic Valve and Manufacturing Corporation
StatusACTIVE
Valve Type for Which DesignedCHECK
Valve Model Number for Which Designed503NX001
Supply Items and Quantities61447 P/N 6 BACKFLOW BUSHING-1; P/N 7 BACKFLOW ROD-1; P/N 8 ROD WIPER-1; P/N 9 O-RING SEAL-1; P/N 10 HANDLE-1; P/N 11 JAM NUT-1; P/N 12 RETAINING RING-1
Component Quantity7
Valve Size for Which Designed3.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2590-00-134-50623BF INTERCHANGEABLE
Cap,filler Opening
Girard Equipment Inc
4820-01-463-4108103.11 INTERCHANGEABLE
Valve,check
Apco/valve & Primer Corp
Cross-Reference Index
Part NumberManufacturer
3BF.1 PRIMARY Val-Matic Valve and Manufacturing Corporation (USA)
3BF Val-Matic Valve and Manufacturing Corporation (USA)
SS-796 Val-Matic Valve and Manufacturing Corporation (USA)
Related Parts
2590-00-134-5062INTERCHANGEABLE
CAP,FILLER OPENING
3BF
4820-01-463-4108INTERCHANGEABLE
VALVE,CHECK
103.11

Frequently Asked Questions

What is NSN 4820-01-465-5256?

NSN 4820-01-465-5256 is a Repair Kit,valve, manufactured by Val-Matic Valve and Manufacturing Corporation, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-465-5256?

NSN 4820-01-465-5256 has 3 cross-referenced part numbers: 3BF.1 (Val-Matic Valve and Manufacturing Corporation), 3BF (Val-Matic Valve and Manufacturing Corporation), SS-796 (Val-Matic Valve and Manufacturing Corporation).

What NSN replaces 4820-01-465-5256?

There are 2 known substitutes for 4820-01-465-5256: 2590-00-134-5062, 4820-01-463-4108. Verify interchangeability with system specifications before substitution.

What are the specifications of 3BF.1?

Key specifications for 3BF.1: Valve Type for Which Designed: CHECK; Valve Model Number for Which Designed: 503NX001; Supply Items and Quantities: 61447 P/N 6 BACKFLOW BUSHING-1; P/N 7 BACKFLOW ROD-1; P/N 8 ROD WIPER-1; P/N 9 O-RING SEAL-1; P/N 10 HANDLE-1; P/N 11 JAM NUT-1; P/N 12 RETAINING RING-1; Special Features: NHA VALVE,SWING FLEX CHECK. 7 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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