PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B5644Seat,valve

P J Valves Inc · NSN 4820-01-377-4007 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-377-4007 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-377-4007. Primary manufacturer part number: B5644.
Features
  • Seat,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING BODY
  • 3 verified cross-references
  • Primary manufacturer: P J Valves Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Body construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-377-4007, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is P J Valves Inc. Government technical data includes 1 verified specification, 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-377-4007
Primary Part NumberB5644
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerP J Valves Inc
StatusACTIVE
MaterialSTEEL CORROSION RESISTING BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3040-01-346-4755 INTERCHANGEABLE
Shaft,drive,flexible
4820-01-377-4006 INTERCHANGEABLE
Cap,valve
4820-01-377-4008 INTERCHANGEABLE
Retainer,disk,valve
4820-01-377-4009 INTERCHANGEABLE
Disk,valve
4820-01-377-4589D5640 ITEM 4 INTERCHANGEABLE
Hinge,swing Check Valve
Hunt Valve Company, Inc.
4820-01-377-6963 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
B5644 P J Valves Inc (USA)
D5640 ITEM 3 P J Valves Inc (USA)
D5640 P J Valves Inc (USA)
Related Parts
3040-01-346-4755INTERCHANGEABLE
SHAFT,DRIVE,FLEXIBLE
4820-01-377-4006INTERCHANGEABLE
CAP,VALVE
4820-01-377-4008INTERCHANGEABLE
RETAINER,DISK,VALVE
4820-01-377-4009INTERCHANGEABLE
DISK,VALVE
4820-01-377-4589INTERCHANGEABLE
HINGE,SWING CHECK VALVE
D5640 ITEM 4
4820-01-377-6963INTERCHANGEABLE
VALVE,CHECK

Frequently Asked Questions

What is NSN 4820-01-377-4007?

NSN 4820-01-377-4007 is a Seat,valve, manufactured by P J Valves Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-377-4007?

NSN 4820-01-377-4007 has 3 cross-referenced part numbers: B5644 (P J Valves Inc), D5640 ITEM 3 (P J Valves Inc), D5640 (P J Valves Inc).

What NSN replaces 4820-01-377-4007?

There are 6 known substitutes for 4820-01-377-4007: 3040-01-346-4755, 4820-01-377-4006, 4820-01-377-4008 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B5644?

Key specifications for B5644: End Item Identification: VALVE CHK SWING;P J VALVES INC;MOD 2CSA; Material: STEEL CORROSION RESISTING BODY. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com