PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7850-013L1Valve,relief,pressure and Temper

Naval Inventory Control Point Mechanicsburg · NSN 4820-01-545-2266 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-545-2266 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-545-2266. Primary manufacturer part number: 7850-013L1.
Features
  • Valve,relief,pressure and Temper — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • 6 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-545-2266, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-545-2266
Primary Part Number7850-013L1
Item NameValve,relief,pressure and Temper
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4820-01-156-4876A12-7945-056-209 INTERCHANGEABLE
Stem and Disc Assembly
Velan Valve Corp.
4820-01-437-3054A12-7945-053-178 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
5310-01-466-409288-22790-5 INTERCHANGEABLE
Nut,plain,hexagon
Department of Defense Project Manager-Mobile Electric Power
4820-01-468-83867915-078-063 INTERCHANGEABLE
Stem,fluid Valve
Velan Valve Corp.
4820-01-468-84247945-053-002-S INTERCHANGEABLE
Disk,valve
Velan Valve Corp.
4820-01-468-84318255-000-061 INTERCHANGEABLE
Disk,valve
Velan Valve Corp.
4820-01-469-2199B12-2074P-02TS,CDS244978GO1 IT31 INTERCHANGEABLE
Valve,globe
Velan Valve Corp.
4820-01-470-57509553-003-065 INTERCHANGEABLE
Disk Pad,valve
Velan Valve Corp.
4820-01-493-74198265-050-031 INTERCHANGEABLE
Cap,valve
Velan Valve Corp.
4820-01-633-8649 INTERCHANGEABLE
Valve,globe
Cross-Reference Index
Part NumberManufacturer
7850-013L1 Naval Inventory Control Point Mechanicsburg (USA)
P2-44978-G01, ITEM 30L1 Naval Inventory Control Point Mechanicsburg (USA)
B12-2074P-05TS Velan Valve Corp. (USA)
P2-44978-G01, ITEM 30 Velan Valve Corp. (USA)
B12-2074P-05TSL1 Naval Inventory Control Point Mechanicsburg (USA)
7850-013 Velan Valve Corp. (USA)
Related Parts
4820-01-156-4876INTERCHANGEABLE
STEM AND DISC ASSEMBLY
A12-7945-056-209
4820-01-437-3054INTERCHANGEABLE
STEM,FLUID VALVE
A12-7945-053-178
5310-01-466-4092INTERCHANGEABLE
NUT,PLAIN,HEXAGON
88-22790-5
4820-01-468-8386INTERCHANGEABLE
STEM,FLUID VALVE
7915-078-063
4820-01-468-8424INTERCHANGEABLE
DISK,VALVE
7945-053-002-S
4820-01-468-8431INTERCHANGEABLE
DISK,VALVE
8255-000-061
4820-01-469-2199INTERCHANGEABLE
VALVE,GLOBE
B12-2074P-02TS,CDS244978GO1 IT31
4820-01-470-5750INTERCHANGEABLE
DISK PAD,VALVE
9553-003-065
4820-01-493-7419INTERCHANGEABLE
CAP,VALVE
8265-050-031
4820-01-633-8649INTERCHANGEABLE
VALVE,GLOBE

Frequently Asked Questions

What is NSN 4820-01-545-2266?

NSN 4820-01-545-2266 is a Valve,relief,pressure and Temper, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-545-2266?

NSN 4820-01-545-2266 has 6 cross-referenced part numbers: 7850-013L1 (Naval Inventory Control Point Mechanicsburg), P2-44978-G01, ITEM 30L1 (Naval Inventory Control Point Mechanicsburg), B12-2074P-05TS (Velan Valve Corp.), P2-44978-G01, ITEM 30 (Velan Valve Corp.), B12-2074P-05TSL1 (Naval Inventory Control Point Mechanicsburg) and 1 more.

What NSN replaces 4820-01-545-2266?

There are 10 known substitutes for 4820-01-545-2266: 4820-01-156-4876, 4820-01-437-3054, 5310-01-466-4092 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7850-013L1?

Key specifications for 7850-013L1: Criticality Code Justification: ZZZY; End Item Identification: VALVE,GLOBE PRSSURE SEAL 4.00IN IN; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 3 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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