PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-1938Stem,fluid Valve

Hunt Valve Company, Inc. · NSN 4820-01-138-3093 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-138-3093 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-138-3093. Primary manufacturer part number: S-1938.
Features
  • Stem,fluid Valve — FSC 4820
  • Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
  • Valve Type for Which Designed: BALL
  • Valve Size for Which Designed: 4.000 INCHES IN
  • Material: NICKEL ALLOY
  • 6 verified cross-references
  • Primary manufacturer: Hunt Valve Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-138-3093, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 4 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-138-3093
Primary Part NumberS-1938
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Material Document and ClassificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
Valve Type for Which DesignedBALL
Valve Size for Which Designed4.000 INCHES IN
MaterialNICKEL ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4820-01-212-9982 INTERCHANGEABLE
Valve,ball
4820-01-213-4321VA-1887-FLOW PLAN 7 3WAY 2PORT INTERCHANGEABLE
Valve,ball
Hunt Valve Company, Inc.
4820-01-340-1538VA-1887 PIECE 5 INTERCHANGEABLE
Ball,valve,ported
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
VA-1887 Morland Valve Co Inc Sub of Smith Valve Corp (USA)
S-1938 PRIMARY Hunt Valve Company, Inc. (USA)
VA-1887 Hunt Valve Company, Inc. (USA)
VA-1887 PIECE 7 Morland Valve Co Inc Sub of Smith Valve Corp (USA)
VA-1887 PIECE 7 Hunt Valve Company, Inc. (USA)
S-1938 Morland Valve Co Inc Sub of Smith Valve Corp (USA)
Related Parts
4820-01-212-9982INTERCHANGEABLE
VALVE,BALL
4820-01-213-4321INTERCHANGEABLE
VALVE,BALL
VA-1887-FLOW PLAN 7 3WAY 2PORT
4820-01-340-1538INTERCHANGEABLE
BALL,VALVE,PORTED
VA-1887 PIECE 5

Frequently Asked Questions

What is NSN 4820-01-138-3093?

NSN 4820-01-138-3093 is a Stem,fluid Valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-138-3093?

NSN 4820-01-138-3093 has 6 cross-referenced part numbers: VA-1887 (Morland Valve Co Inc Sub of Smith Valve Corp), S-1938 (Hunt Valve Company, Inc.), VA-1887 (Hunt Valve Company, Inc.), VA-1887 PIECE 7 (Morland Valve Co Inc Sub of Smith Valve Corp), VA-1887 PIECE 7 (Hunt Valve Company, Inc.) and 1 more.

What NSN replaces 4820-01-138-3093?

There are 3 known substitutes for 4820-01-138-3093: 4820-01-212-9982, 4820-01-213-4321, 4820-01-340-1538. Verify interchangeability with system specifications before substitution.

What are the specifications of S-1938?

Key specifications for S-1938: Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE; Valve Type for Which Designed: BALL; Valve Size for Which Designed: 4.000 INCHES IN; Material: NICKEL ALLOY. 4 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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