PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D4456Trap,steam

Marshall Engineered Products Co Dba Mepco · NSN 4730-00-232-8024 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-232-8024 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-232-8024. Primary manufacturer part number: D4456.
Features
  • Trap,steam — FSC 4730
  • Furnished Items: STRAINER
  • Inlet Connection Type: GROUND JOINT TAILPIECE W/UNION NUT AND FEMALE IRON PIPE
  • Nondefinitive Spec/std Data: 2 CLASS
  • Design Type: THERMOSTATIC
  • Material: COPPER ALLOY AND NICKEL ALLOY BODY
  • Rated Capacity at Maximum Working Pressure: 2600.000 POUNDS OF WATER PER HOUR LBS
  • Screw Thread Series Designator: NPT BOTH INLET AND OUTLET
Applications
  • Applications requiring Copper Alloy and Nickel Alloy Body construction
General Description

The Trap,steam, cataloged under National Stock Number 4730-00-232-8024, 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 Marshall Engineered Products Co Dba Mepco. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-232-8024
Primary Part NumberD4456
Item NameTrap,steam
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMarshall Engineered Products Co Dba Mepco
StatusCANCELLED
Furnished ItemsSTRAINER
Inlet Connection TypeGROUND JOINT TAILPIECE W/UNION NUT AND FEMALE IRON PIPE
Nondefinitive Spec/std Data2 CLASS
Design TypeTHERMOSTATIC
MaterialCOPPER ALLOY AND NICKEL ALLOY BODY
Rated Capacity at Maximum Working Pressure2600.000 POUNDS OF WATER PER HOUR LBS
Screw Thread Series DesignatorNPT BOTH INLET AND OUTLET
Outlet Connection TypeGROUND JOINT TAILPIECE W/UNION NUT AND FEMALE IRON PIPE
Body DesignANGLE PATTERN
Thread DirectionRIGHT-HAND BOTH INLET AND OUTLET
Maximum Steam Working PressureERR-060
MaterialSTEEL CORROSION RESISTING WORKING PARTS
Departure From Cited DesignatorAS MODIFIED BY THREAD DIRECTION, SCREW THREAD SERIES DESIGNATOR ,INLET/OUTLET CONNECTION SIMILARITY,INLET/OUTLET CONNECTION NOMINAL PIPE SIZE,INLET/OUTLET CONNECTION TYPE, INLET/OUTLET CONNECTION THREAD PROVISION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
4730-00-032-1517 INTERCHANGEABLE
Trap,steam
4730-00-232-8013 INTERCHANGEABLE
Trap,steam
4730-00-256-73011633-37-30PC135 INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
4730-00-289-4616 INTERCHANGEABLE
Trap,steam
4730-00-289-4617 INTERCHANGEABLE
Trap,steam
4730-00-289-4619 INTERCHANGEABLE
Trap,steam
4730-00-935-1593J447-1IN INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
4730-01-142-1786N-100 1/2 IN STWY INTERCHANGEABLE
Trap,steam
Spirax Sarco Inc Dba Spirax Sarco
Cross-Reference Index
Part NumberManufacturer
D4456 Marshall Engineered Products Co Dba Mepco (USA)
S791N11-2 Spirax Sarco Inc Dba Spirax Sarco (USA)
C2C1960 Marshall Engineered Products Co Dba Mepco (USA)
TH1AAP1-2 Marshall Engineered Products Co Dba Mepco (USA)
MILT2118 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
E21672 Spirax Sarco Inc Dba Spirax Sarco (USA)
D400-2216 1-2IN Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters (USA)
Related Parts
4730-00-032-1517INTERCHANGEABLE
TRAP,STEAM
4730-00-232-8013INTERCHANGEABLE
TRAP,STEAM
4730-00-256-7301INTERCHANGEABLE
TRAP,STEAM
1633-37-30PC135
4730-00-289-4616INTERCHANGEABLE
TRAP,STEAM
4730-00-289-4617INTERCHANGEABLE
TRAP,STEAM
4730-00-289-4619INTERCHANGEABLE
TRAP,STEAM
4730-00-935-1593INTERCHANGEABLE
TRAP,STEAM
J447-1IN
4730-01-142-1786INTERCHANGEABLE
TRAP,STEAM
N-100 1/2 IN STWY

Frequently Asked Questions

What is NSN 4730-00-232-8024?

NSN 4730-00-232-8024 is a Trap,steam, manufactured by Marshall Engineered Products Co Dba Mepco, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-232-8024?

NSN 4730-00-232-8024 has 7 cross-referenced part numbers: D4456 (Marshall Engineered Products Co Dba Mepco), S791N11-2 (Spirax Sarco Inc Dba Spirax Sarco), C2C1960 (Marshall Engineered Products Co Dba Mepco), TH1AAP1-2 (Marshall Engineered Products Co Dba Mepco), MILT2118 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 4730-00-232-8024?

There are 8 known substitutes for 4730-00-232-8024: 4730-00-032-1517, 4730-00-232-8013, 4730-00-256-7301 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D4456?

Key specifications for D4456: Furnished Items: STRAINER; Inlet Connection Type: GROUND JOINT TAILPIECE W/UNION NUT AND FEMALE IRON PIPE; Nondefinitive Spec/std Data: 2 CLASS; Design Type: THERMOSTATIC. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-232-8024 still in active supply?

NSN 4730-00-232-8024 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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