NSN 4820-01-225-6850 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-225-6850. Manufacturer of record part number: CMI18088.
Opening Pressure Setting: 30.0 POUNDS PER SQUARE INCH LBS
2 manufacturer part numbers on file
Manufacturer of record: Doall Baltimore Company
Identification
NSN: 4820-01-225-6850
NIIN: 012256850
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: CMI18088
Manufacturer: Doall Baltimore Company
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-225-6850, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Doall Baltimore Company. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
C/1Advisory reference — outside the item-of-supply concept
Doall Baltimore Company
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 4820-01-225-6850?
NSN 4820-01-225-6850 is a Valve,safety Relief, manufactured by Doall Baltimore Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-225-6850?
NSN 4820-01-225-6850 has 2 manufacturer part numbers on file: 091-180885 (Doall Baltimore Company), CMI18088 (Doall Baltimore Company).
What are the specifications of CMI18088?
Key specifications for CMI18088: Material: COPPER ALLOY BODY; Opening Pressure Setting: 30.0 POUNDS PER SQUARE INCH LBS. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-225-6850 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.