PartsTable
Technical Data Sheet
N157 1-2 ✓ 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: COPPER ALLOY CAP, body_design: STRAIGHT PATTERN, design_type: THERMOSTATIC, furnished_items: STRAINER, nondefinitive_spec/std_data: 2 CLASS, maximum_steam_working_pressure: ERR-060. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-256-7301, 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
N157 1-2
NSN: 4730-00-256-7301
FSC: 4730
CAGE: 53059 — SPIRAX SARCO INC DBA SPIRAX SARCO (USA)
SPECIFICATIONS
materialCOPPER ALLOY CAP
body_designSTRAIGHT PATTERN
design_typeTHERMOSTATIC
furnished_itemsSTRAINER
nondefinitive_spec/std_data2 CLASS
departure_from_cited_documentAS MODIFIED BY CAPACITY AT MAX WORKING PRESSURE,RADIATING SURFACE AREA ON WHICH CAPACITY IS BASED,INLET/OUTLET CONNECTION TYPE
maximum_steam_working_pressureERR-060
rated_capacity_at_maximum_working_pressure1175.0 POUNDS OF WATER PER HOUR LBS
NSN4730-00-256-7301
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: N157 1-2 · 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
FURNISHED ITEMS: STRAINER
MAXIMUM STEAM WORKING PRESSURE: ERR-060
DESIGN TYPE: THERMOSTATIC
BODY DESIGN: STRAIGHT PATTERN
RATED CAPACITY AT MAXIMUM WORKING PRESSURE: 1175.0 POUNDS OF WATER PER HOUR LBS
NONDEFINITIVE SPEC/STD DATA: 2 CLASS
MATERIAL: STEEL CORROSION RESISTING WORKING PARTS
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY CAPACITY AT MAX WORKING PRESSURE,RADIATING SURFACE AREA ON WHICH CAPACITY IS BASED,INLET/OUTLET CONNECTION TYPE
TECHNICAL CHARACTERISTICS (FLIS)
FURNISHED ITEMSSTRAINER
MAXIMUM STEAM WORKING PRESSUREERR-060
DESIGN TYPETHERMOSTATIC
BODY DESIGNSTRAIGHT PATTERN
RATED CAPACITY AT MAXIMUM WORKING PRESSURE1175.0 POUNDS OF WATER PER HOUR LBS
NONDEFINITIVE SPEC/STD DATA2 CLASS
MATERIALSTEEL CORROSION RESISTING WORKING PARTS
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY CAPACITY AT MAX WORKING PRESSURE,RADIATING SURFACE AREA ON WHICH CAPACITY IS BASED,INLET/OUTLET CONNECTION TYPE
MATERIALCOPPER ALLOY CAP
MATERIALCOPPER ALLOY BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
K4551-2Interchangeable
interchangeable cross-reference
interchangeable
MILT2118Interchangeable
interchangeable cross-reference
interchangeable
D4456Interchangeable
interchangeable cross-reference
interchangeable
S791N11-2Interchangeable
interchangeable cross-reference
interchangeable
C2C1960Interchangeable
interchangeable cross-reference
interchangeable
J446 3-4INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N157 1-2?
N157 1-2 is a TRAP,STEAM.
What parts can replace N157 1-2?
There are 15 known substitutes for N157 1-2: K4551-2, MILT2118, D4456 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N157 1-2?
N157 1-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-256-7301. This indicates validated use in U.S. government and defense supply chains.
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