PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J423 3-4INTrap,steam

Spirax Sarco Inc Dba Spirax Sarco · NSN 4730-00-223-8040 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-223-8040 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-223-8040. Primary manufacturer part number: J423 3-4IN.
Features
  • Trap,steam — FSC 4730
  • Body Design: STRAIGHT HORIZONTAL PATTERN
  • Maximum Steam Working Pressure: ERR-060
  • Design Type: OPEN BUCKET, INVERTED BUCKET OR BALL FLOAT
  • Material: STEEL BODY
  • Nondefinitive Spec/std Data: 1 TYPE AND A CLASS
  • Material: STEEL CORROSION RESISTING WORKING PARTS
  • 3 verified cross-references
Applications
  • Applications requiring Steel Body construction
General Description

The Trap,steam, cataloged under National Stock Number 4730-00-223-8040, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Spirax Sarco Inc Dba Spirax Sarco. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-223-8040
Primary Part NumberJ423 3-4IN
Item NameTrap,steam
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSpirax Sarco Inc Dba Spirax Sarco
StatusACTIVE
Body DesignSTRAIGHT HORIZONTAL PATTERN
Maximum Steam Working PressureERR-060
Design TypeOPEN BUCKET, INVERTED BUCKET OR BALL FLOAT
MaterialSTEEL BODY
Nondefinitive Spec/std Data1 TYPE AND A CLASS
MaterialSTEEL CORROSION RESISTING WORKING PARTS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-142-1665 INTERCHANGEABLE
Trap,steam
4730-00-216-6151 INTERCHANGEABLE
Restrictor Unit,fluid Flow
4730-00-230-4154J464 INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
4730-00-270-4341S11321-770190023 INTERCHANGEABLE
Trap,steam
Sfc Valve Corporation
4730-00-270-4342 INTERCHANGEABLE
Trap,steam
4730-00-499-2091 INTERCHANGEABLE
Trap,steam
4730-01-141-1587 INTERCHANGEABLE
Trap,steam
Cross-Reference Index
Part NumberManufacturer
J423 3-4IN PRIMARY Spirax Sarco Inc Dba Spirax Sarco (USA)
MILT960 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
B1X-180 3-4IN PRIMARY Spirax Sarco Inc Dba Spirax Sarco (USA)
Related Parts
4730-00-142-1665INTERCHANGEABLE
TRAP,STEAM
4730-00-216-6151INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
4730-00-230-4154INTERCHANGEABLE
TRAP,STEAM
J464
4730-00-270-4341INTERCHANGEABLE
TRAP,STEAM
S11321-770190023
4730-00-270-4342INTERCHANGEABLE
TRAP,STEAM
4730-00-499-2091INTERCHANGEABLE
TRAP,STEAM
4730-01-141-1587INTERCHANGEABLE
TRAP,STEAM

Frequently Asked Questions

What is NSN 4730-00-223-8040?

NSN 4730-00-223-8040 is a Trap,steam, manufactured by Spirax Sarco Inc Dba Spirax Sarco, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-223-8040?

NSN 4730-00-223-8040 has 3 cross-referenced part numbers: J423 3-4IN (Spirax Sarco Inc Dba Spirax Sarco), MILT960 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), B1X-180 3-4IN (Spirax Sarco Inc Dba Spirax Sarco).

What NSN replaces 4730-00-223-8040?

There are 7 known substitutes for 4730-00-223-8040: 4730-00-142-1665, 4730-00-216-6151, 4730-00-230-4154 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J423 3-4IN?

Key specifications for J423 3-4IN: Body Design: STRAIGHT HORIZONTAL PATTERN; Maximum Steam Working Pressure: ERR-060; Design Type: OPEN BUCKET, INVERTED BUCKET OR BALL FLOAT; Material: STEEL BODY. 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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