PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7512-8-15-1AStem,fluid Valve

Twc the Valve Company, L.l.c. · NSN 4820-01-534-5902 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-534-5902 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-534-5902. Primary manufacturer part number: 7512-8-15-1A.
Features
  • Stem,fluid Valve — FSC 4820
  • Stem Actuating End Type: ROUNDED
  • Material: STEEL CORROSION RESISTING
  • Valve Type for Which Designed: GATE
  • Valve Size for Which Designed: 4.000 INCHES IN
  • 6 verified cross-references
  • Primary manufacturer: Twc the Valve Company, L.l.c.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-534-5902, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Twc the Valve Company, L.l.c.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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
NSN4820-01-534-5902
Primary Part Number7512-8-15-1A
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTwc the Valve Company, L.l.c.
StatusACTIVE
Stem Actuating End TypeROUNDED
MaterialSTEEL CORROSION RESISTING
Valve Type for Which DesignedGATE
Valve Size for Which Designed4.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4820-01-056-4743 INTERCHANGEABLE
Yoke Bushing,valve
4820-01-073-5848600287 INTERCHANGEABLE
Seat,valve
Twc-Thevalve Company
4820-01-204-2537632829 INTERCHANGEABLE
Disk,valve
The Walworth Company
4820-01-234-79167589-39-1 INTERCHANGEABLE
Seat,valve
The Walworth Company
4820-01-234-79707515-8-15-1 INTERCHANGEABLE
Stem,fluid Valve
The Walworth Company
4820-01-234-80837515-5-Y-HF INTERCHANGEABLE
Disk,valve
The Walworth Company
4820-01-250-5948 INTERCHANGEABLE
Cap,valve
4820-01-250-5949 INTERCHANGEABLE
Cap,valve
4820-01-459-40400600127 INTERCHANGEABLE
Disk,valve
The Walworth Company
4820-01-534-5832N-11398-1-3 4INPC11 INTERCHANGEABLE
Flange,gland,valve
Twc the Valve Company, L.l.c.
Cross-Reference Index
Part NumberManufacturer
7512-8-15-1A Trol-Mation Inc (USA)
7512-8-15-1A Twc-Thevalve Company (USA)
7512-8-15-1A The Walworth Company (USA)
7512-8-15-1A PRIMARY Twc the Valve Company, L.l.c. (USA)
N-11398 The Walworth Company (USA)
N-11398-1-3(4IN)PC9 The Walworth Company (USA)
Related Parts
4820-01-056-4743INTERCHANGEABLE
YOKE BUSHING,VALVE
4820-01-073-5848INTERCHANGEABLE
SEAT,VALVE
600287
4820-01-204-2537INTERCHANGEABLE
DISK,VALVE
632829
4820-01-234-7916INTERCHANGEABLE
SEAT,VALVE
7589-39-1
4820-01-234-7970INTERCHANGEABLE
STEM,FLUID VALVE
7515-8-15-1
4820-01-234-8083INTERCHANGEABLE
DISK,VALVE
7515-5-Y-HF
4820-01-250-5948INTERCHANGEABLE
CAP,VALVE
4820-01-250-5949INTERCHANGEABLE
CAP,VALVE
4820-01-459-4040INTERCHANGEABLE
DISK,VALVE
0600127
4820-01-534-5832INTERCHANGEABLE
FLANGE,GLAND,VALVE
N-11398-1-3 4INPC11

Frequently Asked Questions

What is NSN 4820-01-534-5902?

NSN 4820-01-534-5902 is a Stem,fluid Valve, manufactured by Twc the Valve Company, L.l.c., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-534-5902?

NSN 4820-01-534-5902 has 6 cross-referenced part numbers: 7512-8-15-1A (Trol-Mation Inc), 7512-8-15-1A (Twc-Thevalve Company), 7512-8-15-1A (The Walworth Company), 7512-8-15-1A (Twc the Valve Company, L.l.c.), N-11398 (The Walworth Company) and 1 more.

What NSN replaces 4820-01-534-5902?

There are 10 known substitutes for 4820-01-534-5902: 4820-01-056-4743, 4820-01-073-5848, 4820-01-204-2537 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7512-8-15-1A?

Key specifications for 7512-8-15-1A: End Item Identification: CVN NUCLEAR REACTOR BOUNDRY AREA.; Stem Actuating End Type: ROUNDED; Material: STEEL CORROSION RESISTING; Valve Type for Which Designed: GATE. 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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