PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D5640Disk,valve

P J Valves Inc · NSN 4820-01-377-4009 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-377-4009 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-377-4009. Primary manufacturer part number: D5640.
Features
  • Disk,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • 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 construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-377-4009, 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-377-4009
Primary Part NumberD5640
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerP J Valves Inc
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-086-4364B-5646 INTERCHANGEABLE
Seal,plain
Cooper Machinery Services Llc
3040-01-317-8831B5646 INTERCHANGEABLE
Support,transmissio
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
4820-01-377-4006 INTERCHANGEABLE
Cap,valve
4820-01-377-4007 INTERCHANGEABLE
Seat,valve
4820-01-377-4008 INTERCHANGEABLE
Retainer,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
D5640 P J Valves Inc (USA)
D5640 ITEM 5 P J Valves Inc (USA)
B5646 P J Valves Inc (USA)
Related Parts
5330-00-086-4364INTERCHANGEABLE
SEAL,PLAIN
B-5646
3040-01-317-8831INTERCHANGEABLE
SUPPORT,TRANSMISSIO
B5646
4820-01-377-4006INTERCHANGEABLE
CAP,VALVE
4820-01-377-4007INTERCHANGEABLE
SEAT,VALVE
4820-01-377-4008INTERCHANGEABLE
RETAINER,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 4820-01-377-4009?

NSN 4820-01-377-4009 is a Disk,valve, manufactured by P J Valves Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-377-4009?

NSN 4820-01-377-4009 has 3 cross-referenced part numbers: D5640 (P J Valves Inc), D5640 ITEM 5 (P J Valves Inc), B5646 (P J Valves Inc).

What NSN replaces 4820-01-377-4009?

There are 7 known substitutes for 4820-01-377-4009: 5330-00-086-4364, 3040-01-317-8831, 4820-01-377-4006 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D5640?

Key specifications for D5640: Material: STEEL CORROSION RESISTING; End Item Identification: VALVE CHK SWG;P J VALVES INC. 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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