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NSN 4820-01-243-0837Government record, cited

Valve, Vacuum Breaking4820-01-243-0837

NSN 4820-01-243-0837 · NIIN 012430837 · Part number W-1-5913
Blako Inc. Dba Blakeslee · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 7L611
Government record, cited
NSN 4820-01-243-0837 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-243-0837. Manufacturer of record part number: W-1-5913.
Also searched as  4820-01-243-0837 · 4820012430837 · NIIN 012430837 · 01-243-0837 · FSC 4820 Valves, Nonpowered · CAGE 7L611 · W-1-5913
Nearby stock numbers  ·
Features
  • Valve,vacuum Breaking — FSC 4820
  • First End Thread Direction: RIGHT-HAND
  • Second End Relationship with First End: IDENTICAL
  • First End Style Designator: PLAIN
  • End Connection Quantity: 2
  • First End Connection Type: THREADED INTERNAL PIPE
  • First End Nominal Pipe Size Accommodated: 0.750 INCHES IN
  • Material: STEEL CORROSION RESISTING BODY
Identification
  • NSN: 4820-01-243-0837
  • NIIN: 012430837
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: W-1-5913
  • Manufacturer: Blako Inc. Dba Blakeslee
General Description

The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-243-0837, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Blako Inc. Dba Blakeslee. Government technical data includes 7 specifications, 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-243-0837
Primary Part NumberW-1-5913
Item NameValve,vacuum Breaking
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerBlako Inc. Dba Blakeslee
StatusACTIVE
First End Thread DirectionRIGHT-HAND
Second End Relationship with First EndIDENTICAL
First End Style DesignatorPLAIN
End Connection Quantity2
First End Connection TypeTHREADED INTERNAL PIPE
First End Nominal Pipe Size Accommodated0.750 INCHES IN
MaterialSTEEL CORROSION RESISTING BODY
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
W-1-5913 PRIMARY Blako Inc. Dba Blakeslee (USA)
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 4820-01-243-0837?

NSN 4820-01-243-0837 is a Valve,vacuum Breaking, manufactured by Blako Inc. Dba Blakeslee, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-243-0837?

NSN 4820-01-243-0837 has 1 manufacturer part number on file: W-1-5913 (Blako Inc. Dba Blakeslee).

What are the specifications of W-1-5913?

Key specifications for W-1-5913: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; First End Style Designator: PLAIN; End Connection Quantity: 2. 7 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-243-0837 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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