PartsTable TECHNICAL DATA SHEET
NSN 4820-01-384-0785Government record, cited

Ring, Valve Piston4820-01-384-0785

NSN 4820-01-384-0785 · NIIN 013840785 · Part number 7219-MR-952-T
Greene Tweed & Co Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 5F573
Government record, cited
NSN 4820-01-384-0785 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-384-0785. Manufacturer of record part number: 7219-MR-952-T.
Also searched as  4820-01-384-0785 · 4820013840785 · NIIN 013840785 · 01-384-0785 · FSC 4820 Valves, Nonpowered · CAGE 5F573 · 7219-MR-952-T
Nearby stock numbers  ·
Features
  • Ring,valve Piston — FSC 4820
  • General Characteristics Item Description: 1.553 IN. ID; TEMP RANGE -65 DEG F TO 300 DEG F IN
  • 1 manufacturer part number on file
  • Manufacturer of record: Greene Tweed & Co Inc
Identification
  • NSN: 4820-01-384-0785
  • NIIN: 013840785
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: 7219-MR-952-T
  • Manufacturer: Greene Tweed & Co Inc
General Description

The Ring,valve Piston, cataloged under National Stock Number 4820-01-384-0785, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Greene Tweed & Co Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-384-0785
Primary Part Number7219-MR-952-T
Item NameRing,valve Piston
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerGreene Tweed & Co Inc
StatusACTIVE
General Characteristics Item Description1.553 IN. ID; TEMP RANGE -65 DEG F TO 300 DEG F IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
7219-MR-952-T PRIMARY Greene Tweed & Co Inc (USA)
Reference documents
ReferenceMeaning
7219-MR-952-T 3/9 Design control — primary reference
Palmetto Inc
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-384-0785?

NSN 4820-01-384-0785 is a Ring,valve Piston, manufactured by Greene Tweed & Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-384-0785?

NSN 4820-01-384-0785 has 1 manufacturer part number on file: 7219-MR-952-T (Greene Tweed & Co Inc).

What are the specifications of 7219-MR-952-T?

Key specifications for 7219-MR-952-T: General Characteristics Item Description: 1.553 IN. ID; TEMP RANGE -65 DEG F TO 300 DEG F IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-384-0785 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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