NSN 4820-01-686-8830 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-686-8830. Manufacturer of record part number: 0887503.
Supply Items and Quantities: SEAT (1); SEAT O-RING (1); STEM AND DIAPHRAGM ASSEMBLY (1); STEM O-RING (1); COVER O-RING (1); AND RV SPRING (1)
Component Document Origin: INDUSTRIAL
Document Source: 79227
2 manufacturer part numbers on file
Manufacturer of record: Watts Regulator Company
Identification
NSN: 4820-01-686-8830
NIIN: 016868830
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 0887503
Manufacturer: Watts Regulator Company
General Description
The Parts Kit,safety Relief Valve, cataloged under National Stock Number 4820-01-686-8830, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-686-8830
Primary Part Number
0887503
Item Name
Parts Kit,safety Relief Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Watts Regulator Company
Status
ACTIVE
Document Type
PARTS CATALOG
End Item Source
79227
Supply Items and Quantities
SEAT (1); SEAT O-RING (1); STEM AND DIAPHRAGM ASSEMBLY (1); STEM O-RING (1); COVER O-RING (1); AND RV SPRING (1)
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 4820-01-686-8830?
NSN 4820-01-686-8830 is a Parts Kit,safety Relief Valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-686-8830?
NSN 4820-01-686-8830 has 2 manufacturer part numbers on file: RK SS009VT (Watts Regulator Company), 0887503 (Watts Regulator Company).
What are the specifications of 0887503?
Key specifications for 0887503: Document Type: PARTS CATALOG; End Item Source: 79227; Supply Items and Quantities: SEAT (1); SEAT O-RING (1); STEM AND DIAPHRAGM ASSEMBLY (1); STEM O-RING (1); COVER O-RING (1); AND RV SPRING (1); Component Document Origin: INDUSTRIAL. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-686-8830 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.