PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-00599Seat,valve

Tyco Fire Products Lp · NSN 4820-00-715-3667 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-715-3667 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-715-3667. Primary manufacturer part number: 20-00599.
Features
  • Seat,valve — FSC 4820
  • Body Inside Diameter: 3.625 INCHES NOMINAL IN
  • Seating Surface Shape: ANGULAR
  • Style Designator: PLAIN
  • Seat Angle in Deg: 15.000 NOMINAL
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
  • Body Outside Diameter: 5.015 INCHES MINIMUM AND 5.025 INCHES MAXIMUM IN
  • 2 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polytetrafluoroethylene Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-715-3667, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Fire Products Lp. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-715-3667
Primary Part Number20-00599
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTyco Fire Products Lp
StatusACTIVE
Body Inside Diameter3.625 INCHES NOMINAL IN
Seating Surface ShapeANGULAR
Style DesignatorPLAIN
Seat Angle in Deg15.000 NOMINAL
MaterialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Body Outside Diameter5.015 INCHES MINIMUM AND 5.025 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5360-00-530-840522012A INTERCHANGEABLE
Spring,helical,compression
Brinkley Technology Group Llc Dba Hercules Manufacturing
1336-01-377-8673ERIWH0016 INTERCHANGEABLE
Warhead Section,guided Missile,h
Mcdermott Inc Babcock and Wilcox/eri Opns
4720-01-556-30372000599 INTERCHANGEABLE
Tubing,nonmetallic
General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp
Cross-Reference Index
Part NumberManufacturer
20-00599 PRIMARY Tyco Fire Products Lp (USA)
V599 Tyco Fire Products Lp (USA)
Related Parts
5360-00-530-8405INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
22012A
1336-01-377-8673INTERCHANGEABLE
WARHEAD SECTION,GUIDED MISSILE,H
ERIWH0016
4720-01-556-3037INTERCHANGEABLE
TUBING,NONMETALLIC
2000599

Frequently Asked Questions

What is NSN 4820-00-715-3667?

NSN 4820-00-715-3667 is a Seat,valve, manufactured by Tyco Fire Products Lp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-715-3667?

NSN 4820-00-715-3667 has 2 cross-referenced part numbers: 20-00599 (Tyco Fire Products Lp), V599 (Tyco Fire Products Lp).

What NSN replaces 4820-00-715-3667?

There are 3 known substitutes for 4820-00-715-3667: 5360-00-530-8405, 1336-01-377-8673, 4720-01-556-3037. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-00599?

Key specifications for 20-00599: Body Inside Diameter: 3.625 INCHES NOMINAL IN; Seating Surface Shape: ANGULAR; Style Designator: PLAIN; Overall Height: 0.688 INCHES NOMINAL IN. 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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