NSN 4820-01-231-2708 · NIIN 012312708 · Part number 1989F4-1-2IN9T11PSI
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 04537
Government record, cited
NSN 4820-01-231-2708 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-231-2708. Manufacturer of record part number: 1989F4-1-2IN9T11PSI.
Also searched as4820-01-231-2708 ·
4820012312708 ·
NIIN 012312708 ·
01-231-2708 ·
FSC 4820 Valves, Nonpowered · CAGE 04537 · 1989F4-1-2IN9T11PSI
Adjustable Pressure Range: +9.0 TO 11.0 POUNDS PER SQUARE INCH LBS
Media for Which Designed: STEAM SINGLE RESPONSE
Material: COPPER ALLOY BODY
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Identification
NSN: 4820-01-231-2708
NIIN: 012312708
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1989F4-1-2IN9T11PSI
Manufacturer: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-231-2708, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa. Government technical data includes 4 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.
Technical Specifications
Parameter
Value
NSN
4820-01-231-2708
Primary Part Number
1989F4-1-2IN9T11PSI
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA)
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 4820-01-231-2708?
NSN 4820-01-231-2708 is a Valve,safety Relief, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-231-2708?
NSN 4820-01-231-2708 has 1 manufacturer part number on file: 1989F4-1-2IN9T11PSI (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa).
What are the specifications of 1989F4-1-2IN9T11PSI?
Key specifications for 1989F4-1-2IN9T11PSI: Adjustable Pressure Range: +9.0 TO 11.0 POUNDS PER SQUARE INCH LBS; Media for Which Designed: STEAM SINGLE RESPONSE; Material: COPPER ALLOY BODY; Valve Operation Method: AUTOMATIC. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-231-2708 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.