PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J954M0DIFIED1IN150PSIFLGSTrap,steam

Spirax Sarco Inc Dba Spirax Sarco · NSN 4730-00-499-2091 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-499-2091 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-499-2091. Primary manufacturer part number: J954M0DIFIED1IN150PSIFLGS.
Features
  • Trap,steam — FSC 4730
  • Design Type: THERMOSTATIC
  • Body Design: ANGLE PATTERN
  • Nondefinitive Spec/std Data: 150 SERIES AND 2 TYPE
  • Flange Outside Diameter: 4.250 INCHES NOMINAL BOTH INLET AND OUTLET IN
  • Material: STEEL BODY
  • Flange Bolt Hole Quantity: 4 BOTH INLET AND OUTLET
  • Flange Facing Type: PLAIN BOTH INLET AND OUTLET
Applications
  • Applications requiring Steel Body construction
General Description

The Trap,steam, cataloged under National Stock Number 4730-00-499-2091, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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
NSN4730-00-499-2091
Primary Part NumberJ954M0DIFIED1IN150PSIFLGS
Item NameTrap,steam
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSpirax Sarco Inc Dba Spirax Sarco
StatusACTIVE
Design TypeTHERMOSTATIC
Body DesignANGLE PATTERN
Nondefinitive Spec/std Data150 SERIES AND 2 TYPE
Flange Outside Diameter4.250 INCHES NOMINAL BOTH INLET AND OUTLET IN
MaterialSTEEL BODY
Flange Bolt Hole Quantity4 BOTH INLET AND OUTLET
Flange Facing TypePLAIN BOTH INLET AND OUTLET
Flange Bolt Hole Diameter0.625 INCHES NOMINAL BOTH INLET AND OUTLET IN
Flange Bolt Circle Diameter3.125 INCHES NOMINAL BOTH INLET AND OUTLET IN
Outlet Connection TypeFLANGED
Flange Thickness0.562 INCHES NOMINAL BOTH INLET AND OUTLET IN
Maximum Steam Working PressureERR-060
Inlet Connection TypeFLANGED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-142-1665 INTERCHANGEABLE
Trap,steam
4730-00-216-6151 INTERCHANGEABLE
Restrictor Unit,fluid Flow
4730-00-223-8040B1X-180 3-4IN INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
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
4730-01-141-1587 INTERCHANGEABLE
Trap,steam
Cross-Reference Index
Part NumberManufacturer
J954M0DIFIED1IN150PSIFLGS Spirax Sarco Inc Dba Spirax Sarco (USA)
MIL-T-960 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-142-1665INTERCHANGEABLE
TRAP,STEAM
4730-00-216-6151INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
4730-00-223-8040INTERCHANGEABLE
TRAP,STEAM
B1X-180 3-4IN
4730-00-230-4154INTERCHANGEABLE
TRAP,STEAM
J464
4730-00-270-4341INTERCHANGEABLE
TRAP,STEAM
S11321-770190023
4730-00-270-4342INTERCHANGEABLE
TRAP,STEAM
4730-01-141-1587INTERCHANGEABLE
TRAP,STEAM

Frequently Asked Questions

What is NSN 4730-00-499-2091?

NSN 4730-00-499-2091 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 4730-00-499-2091?

NSN 4730-00-499-2091 has 2 cross-referenced part numbers: J954M0DIFIED1IN150PSIFLGS (Spirax Sarco Inc Dba Spirax Sarco), MIL-T-960 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-499-2091?

There are 7 known substitutes for 4730-00-499-2091: 4730-00-142-1665, 4730-00-216-6151, 4730-00-223-8040 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J954M0DIFIED1IN150PSIFLGS?

Key specifications for J954M0DIFIED1IN150PSIFLGS: Design Type: THERMOSTATIC; Body Design: ANGLE PATTERN; Nondefinitive Spec/std Data: 150 SERIES AND 2 TYPE; Flange Outside Diameter: 4.250 INCHES NOMINAL BOTH INLET AND OUTLET IN. 13 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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