NSN 4820-01-438-4918 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-438-4918. Manufacturer of record part number: 886999-RK009M2-RT-3/4.
Also searched as4820-01-438-4918 ·
4820014384918 ·
NIIN 014384918 ·
01-438-4918 ·
FSC 4820 Valves, Nonpowered · CAGE 79227 · 886999-RK009M2-RT-3/4
Nearby stock numbers← 4820-01-438-4911 Parts Kit, Safety Relief Valve
·
4820-01-438-4926 Parts Kit, Check Valve →
4820-01-438-4918 — Valves, Nonpowered
Features
Parts Kit,safety Relief Valve — FSC 4820
Component Quantity: 9
End Item Source: 79227
Model Number: 009
Supply Items and Quantities: DIAPHRAGM 1; DISK ASSEMBLIES 2; STEM O-RINGS 2; COVER O-RING 1; SEAT O-RINGS 2;
Document Source: 79227
1 manufacturer part number on file
Manufacturer of record: Watts Regulator Company
Identification
NSN: 4820-01-438-4918
NIIN: 014384918
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 886999-RK009M2-RT-3/4
Manufacturer: Watts Regulator Company
General Description
The Parts Kit,safety Relief Valve, cataloged under National Stock Number 4820-01-438-4918, 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 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.
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 4820-01-438-4918?
NSN 4820-01-438-4918 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 4820-01-438-4918?
NSN 4820-01-438-4918 has 1 manufacturer part number on file: 886999-RK009M2-RT-3/4 (Watts Regulator Company).
What are the specifications of 886999-RK009M2-RT-3/4?
Key specifications for 886999-RK009M2-RT-3/4: Component Quantity: 9; End Item Source: 79227; Model Number: 009; Supply Items and Quantities: DIAPHRAGM 1; DISK ASSEMBLIES 2; STEM O-RINGS 2; COVER O-RING 1; SEAT O-RINGS 2;. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-438-4918 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.