PartsTable
Technical Data Sheet
4913K21 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The TRAP,STEAM is a the manufacturer industrial component. Key specifications include material: IRON CAST BODY, body_design: STRAIGHT VERTICAL PATTERN, design_type: COMBINATION FLOAT/THERMOSTATIC, special_features: HGT.5-3/4 IN.,WDTH 4-5/8 IN. IN, thread_direction: RIGHT-HAND BOTH INLET AND OUTLET, inlet_connection_type: FEMALE IRON PIPE.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-135-3311, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
4913K21
NSN: 4730-01-135-3311
FSC: 4730
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialIRON CAST BODY
body_designSTRAIGHT VERTICAL PATTERN
design_typeCOMBINATION FLOAT/THERMOSTATIC
special_featuresHGT.5-3/4 IN.,WDTH 4-5/8 IN. IN
thread_directionRIGHT-HAND BOTH INLET AND OUTLET
inlet_connection_typeFEMALE IRON PIPE
outlet_connection_typeFEMALE IRON PIPE
maximum_steam_working_pressureERR-060
screw_thread_series_designatorNPT BOTH INLET AND OUTLET
rated_capacity_at_maximum_working_pressure1450.0 POUNDS OF WATER PER HOUR LBS
NSN4730-01-135-3311
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4913K21 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
INLET CONNECTION TYPE: FEMALE IRON PIPE
OUTLET CONNECTION TYPE: FEMALE IRON PIPE
THREAD DIRECTION: RIGHT-HAND BOTH INLET AND OUTLET
RATED CAPACITY AT MAXIMUM WORKING PRESSURE: 1450.0 POUNDS OF WATER PER HOUR LBS
MATERIAL: IRON CAST BODY
SCREW THREAD SERIES DESIGNATOR: NPT BOTH INLET AND OUTLET
BODY DESIGN: STRAIGHT VERTICAL PATTERN
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESHGT.5-3/4 IN.,WDTH 4-5/8 IN. IN
INLET CONNECTION TYPEFEMALE IRON PIPE
OUTLET CONNECTION TYPEFEMALE IRON PIPE
THREAD DIRECTIONRIGHT-HAND BOTH INLET AND OUTLET
RATED CAPACITY AT MAXIMUM WORKING PRESSURE1450.0 POUNDS OF WATER PER HOUR LBS
MATERIALIRON CAST BODY
SCREW THREAD SERIES DESIGNATORNPT BOTH INLET AND OUTLET
BODY DESIGNSTRAIGHT VERTICAL PATTERN
DESIGN TYPECOMBINATION FLOAT/THERMOSTATIC
MAXIMUM STEAM WORKING PRESSUREERR-060
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
40275REVFInterchangeable
interchangeable cross-reference
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40275Interchangeable
interchangeable cross-reference
interchangeable
4523Interchangeable
IBM 4523 8GB (2x 4GB) Memory Kit PC2-5300P
interchangeable
42529Interchangeable
interchangeable cross-reference
interchangeable
SMC523343Interchangeable
interchangeable cross-reference
interchangeable
81000-40265 ITEM 10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4913K21?
4913K21 is a TRAP,STEAM.
What parts can replace 4913K21?
There are 9 known substitutes for 4913K21: 40275REVF, 40275, 4523 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4913K21?
4913K21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-135-3311. This indicates validated use in U.S. government and defense supply chains.
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