PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NMP 1109 PIECE 12Cap,valve

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-01-312-5081 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-312-5081 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-312-5081. Primary manufacturer part number: NMP 1109 PIECE 12.
Features
  • Cap,valve — FSC 4820
  • Valve Size for Which Designed: 1.000 INCHES IN
  • Material: COPPER ALLOY
  • Valve Model Number for Which Designed: DLO/B-1 AND BLO/B-2
  • Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE
  • Attachment Method: RETAINING RING
  • Valve Type for Which Designed: RELIEF
  • 6 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-312-5081, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-312-5081
Primary Part NumberNMP 1109 PIECE 12
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
Valve Size for Which Designed1.000 INCHES IN
MaterialCOPPER ALLOY
Valve Model Number for Which DesignedDLO/B-1 AND BLO/B-2
Material Document and ClassificationASTM B61 ASSN STD SINGLE MATERIAL RESPONSE
Attachment MethodRETAINING RING
Valve Type for Which DesignedRELIEF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4820-01-025-7400058.307.0113 INTERCHANGEABLE
Test Gag,safety Relief Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-277-9140008-303-0098 INTERCHANGEABLE
Guide,valve Stem
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-311-4975NMP1109DLO-40EB2-59T70PSI INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
3040-01-311-9529NMP 1109 PIECE 8 INTERCHANGEABLE
Lever,manual Control
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4730-01-312-5020NMP 1109 PIECE 13 INTERCHANGEABLE
Nut,union
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4730-01-312-5021NMP 1109 PIECE 29 INTERCHANGEABLE
Nut,union
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-312-50760045000469 INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-359-6357DLO-40E/B-2 49T5 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-473-1277005.500.0403 INTERCHANGEABLE
Disk,valve
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
Cross-Reference Index
Part NumberManufacturer
NMP 1109 PIECE 12 Kunkle Industries Inc Lonergan Valve Div (USA)
NMP 1109 PIECE 12 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
NMP 1109 PIECE 12 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
NMP 1109 Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
0021010324 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
NMP 1109 Kunkle Industries Inc Lonergan Valve Div (USA)
Related Parts
4820-01-025-7400INTERCHANGEABLE
TEST GAG,SAFETY RELIEF VALVE
058.307.0113
4820-01-277-9140INTERCHANGEABLE
GUIDE,VALVE STEM
008-303-0098
4820-01-311-4975INTERCHANGEABLE
VALVE,SAFETY RELIEF
NMP1109DLO-40EB2-59T70PSI
3040-01-311-9529INTERCHANGEABLE
LEVER,MANUAL CONTROL
NMP 1109 PIECE 8
4730-01-312-5020INTERCHANGEABLE
NUT,UNION
NMP 1109 PIECE 13
4730-01-312-5021INTERCHANGEABLE
NUT,UNION
NMP 1109 PIECE 29
4820-01-312-5076INTERCHANGEABLE
STEM,FLUID VALVE
0045000469
4820-01-359-6357INTERCHANGEABLE
VALVE,SAFETY RELIEF
DLO-40E/B-2 49T5
4820-01-473-1277INTERCHANGEABLE
DISK,VALVE
005.500.0403

Frequently Asked Questions

What is NSN 4820-01-312-5081?

NSN 4820-01-312-5081 is a Cap,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-312-5081?

NSN 4820-01-312-5081 has 6 cross-referenced part numbers: NMP 1109 PIECE 12 (Kunkle Industries Inc Lonergan Valve Div), NMP 1109 PIECE 12 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP 1109 PIECE 12 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), NMP 1109 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), 0021010324 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team) and 1 more.

What NSN replaces 4820-01-312-5081?

There are 9 known substitutes for 4820-01-312-5081: 4820-01-025-7400, 4820-01-277-9140, 4820-01-311-4975 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NMP 1109 PIECE 12?

Key specifications for NMP 1109 PIECE 12: Valve Size for Which Designed: 1.000 INCHES IN; Material: COPPER ALLOY; Valve Model Number for Which Designed: DLO/B-1 AND BLO/B-2; Material Document and Classification: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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