NSN 4820-01-323-0261 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-323-0261. Manufacturer of record part number: SW-2611 1/2IN B51198R3.
Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS
Style Designator: STRAIGHT THRU
Nominal Outside Diameter Tube Accommodated: 0.500 INCHES ALL ENDS IN
Disk Loading Method: SPRING
Identification
NSN: 4820-01-323-0261
NIIN: 013230261
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: SW-2611 1/2IN B51198R3
Manufacturer: Flowserve Inc
General Description
The Valve,check, cataloged under National Stock Number 4820-01-323-0261, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Inc. Government technical data includes 9 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.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-323-0261?
NSN 4820-01-323-0261 is a Valve,check, manufactured by Flowserve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-323-0261?
NSN 4820-01-323-0261 has 1 manufacturer part number on file: SW-2611 1/2IN B51198R3 (Flowserve Inc).
What are the specifications of SW-2611 1/2IN B51198R3?
Key specifications for SW-2611 1/2IN B51198R3: Flow Control Device: DISK; Connection Style: SOCKET (TUBE) ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS. 9 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-323-0261 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.