PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D18307-515Valve,assembly

Air Cruisers Company, Llc · NSN 4820-01-045-0373 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-045-0373 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-045-0373. Primary manufacturer part number: D18307-515.
Features
  • Valve,assembly — FSC 4820
  • General Characteristics Item Description: PART CONSISTS OF 2 BEARING. SHAFTS; 1 FITTING BOTTLE; 1 SPACER; 2 PISTONS; 1 SPRING REGULATOR; 1 TUBE; 1 FITTING GAUGE PROTECTOR; 1 SHELL GAUGE PROTECTOR; 1 RELIEF DEVICE
  • 4 verified cross-references
  • Primary manufacturer: Air Cruisers Company, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,assembly, cataloged under National Stock Number 4820-01-045-0373, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Air Cruisers Company, Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-01-045-0373
Primary Part NumberD18307-515
Item NameValve,assembly
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAir Cruisers Company, Llc
StatusCANCELLED
General Characteristics Item DescriptionPART CONSISTS OF 2 BEARING. SHAFTS; 1 FITTING BOTTLE; 1 SPACER; 2 PISTONS; 1 SPRING REGULATOR; 1 TUBE; 1 FITTING GAUGE PROTECTOR; 1 SHELL GAUGE PROTECTOR; 1 RELIEF DEVICE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-100-85517333354 INTERCHANGEABLE
Bearing,ball,thrust
U S Army Tank Automotive Command Amsta-Im-Mm
6625-00-648-8346TV7BU INTERCHANGEABLE
Test Set,electron Tube
Joint Electronics Type Designation System
Cross-Reference Index
Part NumberManufacturer
D18307-515 PRIMARY Air Cruisers Company, Llc (USA)
520GPS-4 PRIMARY Saf Industries Llc Dba General Pneumatics (USA)
D29517-513 PRIMARY Air Cruisers Company, Llc (USA)
D29 Air Cruisers Company, Llc (USA)
Related Parts
3110-00-100-8551INTERCHANGEABLE
BEARING,BALL,THRUST
7333354
6625-00-648-8346INTERCHANGEABLE
TEST SET,ELECTRON TUBE
TV7BU

Frequently Asked Questions

What is NSN 4820-01-045-0373?

NSN 4820-01-045-0373 is a Valve,assembly, manufactured by Air Cruisers Company, Llc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-045-0373?

NSN 4820-01-045-0373 has 4 cross-referenced part numbers: D18307-515 (Air Cruisers Company, Llc), 520GPS-4 (Saf Industries Llc Dba General Pneumatics), D29517-513 (Air Cruisers Company, Llc), D29 (Air Cruisers Company, Llc).

What NSN replaces 4820-01-045-0373?

There are 2 known substitutes for 4820-01-045-0373: 3110-00-100-8551, 6625-00-648-8346. Verify interchangeability with system specifications before substitution.

What are the specifications of D18307-515?

Key specifications for D18307-515: General Characteristics Item Description: PART CONSISTS OF 2 BEARING. SHAFTS; 1 FITTING BOTTLE; 1 SPACER; 2 PISTONS; 1 SPRING REGULATOR; 1 TUBE; 1 FITTING GAUGE PROTECTOR; 1 SHELL GAUGE PROTECTOR; 1 RELIEF DEVICE. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-045-0373 still in active supply?

NSN 4820-01-045-0373 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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