PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18327Valve,safety Relief

Provision, Inc. Dba Provision Inc · NSN 4820-00-255-1029 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-255-1029 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-255-1029. Primary manufacturer part number: 18327.
Features
  • Valve,safety Relief — FSC 4820
  • Style Designator: ANGLE
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE SEAT
  • Flow Control Device: DISK
  • 2 verified cross-references
  • Primary manufacturer: Provision, Inc. Dba Provision Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polytetrafluoroethylene Seat construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-255-1029, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Provision, Inc. Dba Provision Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN4820-00-255-1029
Primary Part Number18327
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerProvision, Inc. Dba Provision Inc
StatusACTIVE
Style DesignatorANGLE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEAT
Flow Control DeviceDISK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-227-116252993 INTERCHANGEABLE
Screw,tapping
Am General Llc
5935-00-455-8531 INTERCHANGEABLE
Connector,plug,electrical
4730-00-697-1384293007 INTERCHANGEABLE
Strainer Element,sediment
Briggs and Stratton Corp
5133-00-894-5613 INTERCHANGEABLE
Drill,twist
3110-01-096-5103 INTERCHANGEABLE
Bearing,ball,annular
3110-01-176-7804 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
18327 PRIMARY Provision, Inc. Dba Provision Inc (USA)
87T-55PSI-2 IN. Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
Related Parts
5305-00-227-1162INTERCHANGEABLE
SCREW,TAPPING
52993
5935-00-455-8531INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
4730-00-697-1384INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
293007
5133-00-894-5613INTERCHANGEABLE
DRILL,TWIST
3110-01-096-5103INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-01-176-7804INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 4820-00-255-1029?

NSN 4820-00-255-1029 is a Valve,safety Relief, manufactured by Provision, Inc. Dba Provision Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-255-1029?

NSN 4820-00-255-1029 has 2 cross-referenced part numbers: 18327 (Provision, Inc. Dba Provision Inc), 87T-55PSI-2 IN. (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).

What NSN replaces 4820-00-255-1029?

There are 6 known substitutes for 4820-00-255-1029: 5305-00-227-1162, 5935-00-455-8531, 4730-00-697-1384 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18327?

Key specifications for 18327: Style Designator: ANGLE; Material: PLASTIC POLYTETRAFLUOROETHYLENE SEAT; Flow Control Device: DISK. 3 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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