NSN 4820-01-505-2725 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-505-2725. Manufacturer of record part number: 170-4515-3PSI.
Manufacturer of record: Suburban Manufacturing, Llc
Identification
NSN: 4820-01-505-2725
NIIN: 015052725
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 170-4515-3PSI
Manufacturer: Suburban Manufacturing, Llc
General Description
The Valve,check, cataloged under National Stock Number 4820-01-505-2725, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Suburban Manufacturing, Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Valve,check
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Suburban Manufacturing, Llc (CAGE 7T076)
Technical Specifications
Parameter
Value
NSN
4820-01-505-2725
Primary Part Number
170-4515-3PSI
Item Name
Valve,check
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Suburban Manufacturing, Llc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-505-2726638322POSSIBLE MATCH
VALVE,CHECK
Possible match (shared part number)Gardner Denver Thomas, Inc. Dba Thomas Products Division
4820-01-505-2728633957POSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Gardner Denver Thomas, Inc. Dba Thomas Products Division
4810-01-505-272921999-0031POSSIBLE MATCH
VALVE,SOLENOID
Possible match (shared part number)Suburban Manufacturing, Llc
6680-01-505-3455201010POSSIBLE MATCH
TRANSMITTER,LIQUID QUANTITY
Possible match (shared part number)Setra Systems, Inc. Dba Gems Sensors
4820-01-505-4220POSSIBLE MATCH
VALVE,BALL
Possible match (shared part number)
4820-01-505-9301142-0000POSSIBLE MATCH
COCK,POPPET DRAIN
Possible match (shared part number)Suburban Manufacturing, Llc
NSN 4820-01-505-2725 is a Valve,check, manufactured by Suburban Manufacturing, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-505-2725?
NSN 4820-01-505-2725 has 2 manufacturer part numbers on file: 170-4515-3PSI (Suburban Manufacturing, Llc), 21410-0001 ITEM 17 (Suburban Manufacturing, Llc).
What NSN replaces 4820-01-505-2725?
6 possible matches (shared part number, not a government interchangeability claim): 4820-01-505-2726, 4820-01-505-2728, 4810-01-505-2729. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-505-2725 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.