PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

381-51Seat,valve Relief

Tactair Fluid Controls Inc · NSN 4920-00-213-8969 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-00-213-8969 — this item is cataloged by the U.S. Government under National Stock Number 4920-00-213-8969. Primary manufacturer part number: 381-51.
Features
  • Seat,valve Relief — FSC 4920
  • 2 verified cross-references
  • Primary manufacturer: Tactair Fluid Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve Relief, cataloged under National Stock Number 4920-00-213-8969, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Tactair Fluid Controls Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve Relief
FSC / FSG4920 — No Item Name Available (FSG 49)
ManufacturersTactair Fluid Controls Inc Phoenix Controls Div (CAGE 57817); Tactair Fluid Controls Inc (CAGE 70236)
Technical Specifications
ParameterValue
NSN4920-00-213-8969
Primary Part Number381-51
Item NameSeat,valve Relief
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerTactair Fluid Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5970-00-899-9657380S INTERCHANGEABLE
Insulator,pin
Knox Porcelain Corp
6105-00-902-9014EL11304 INTERCHANGEABLE
Motor,alternating Current
Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.
Cross-Reference Index
Part NumberManufacturer
381-51 Tactair Fluid Controls Inc Phoenix Controls Div (USA)
381-51 PRIMARY Tactair Fluid Controls Inc (USA)
Related Parts
5970-00-899-9657INTERCHANGEABLE
INSULATOR,PIN
380S
6105-00-902-9014INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
EL11304

Frequently Asked Questions

What is NSN 4920-00-213-8969?

NSN 4920-00-213-8969 is a Seat,valve Relief, manufactured by Tactair Fluid Controls Inc, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-00-213-8969?

NSN 4920-00-213-8969 has 2 cross-referenced part numbers: 381-51 (Tactair Fluid Controls Inc Phoenix Controls Div), 381-51 (Tactair Fluid Controls Inc).

What NSN replaces 4920-00-213-8969?

There are 2 known substitutes for 4920-00-213-8969: 5970-00-899-9657, 6105-00-902-9014. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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