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Technical Data Sheet
PartsTable / COMPONENT / 422-2251
422-2251 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include flow_angle: 90.0 DEGREES FIRST END, temp_rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL BOSS FIRST END, inside_diameter: 0.250 INCHES NOMINAL IN, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-545-5617, 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
422-2251
NSN: 4720-00-545-5617
FSC: 4720
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
flow_angle90.0 DEGREES FIRST END
temp_rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL BOSS FIRST END
inside_diameter0.250 INCHES NOMINAL IN
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
outside_diameter0.484 INCHES NOMINAL IN
special_featuresINNER CONVEYING TUBE MATERIAL-PLASTIC,POLYCHLOROTRIFLUOROETHYLENE
thread_directionRIGHT-HAND FIRST END
operating_pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure12000.0 POUNDS PER SQUARE INCH LBS
nominal_thread_size0.563 INCHES FIRST END IN
NSN4720-00-545-5617
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 422-2251 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLOW ANGLE: 90.0 DEGREES FIRST END
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
OPERATING PRESSURE: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
•
INSIDE SURFACE CONDITION: SMOOTH
•
HYDROSTATIC TEST PRESSURE: 3000.0 POUNDS PER SQUARE INCH LBS
•
MEASURING METHOD AND LENGTH: 22.100 INCHES NOMINAL WORKING IN
•
THREAD DIRECTION: RIGHT-HAND FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
FLOW ANGLE90.0 DEGREES FIRST END
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
OPERATING PRESSURE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
INSIDE SURFACE CONDITIONSMOOTH
HYDROSTATIC TEST PRESSURE3000.0 POUNDS PER SQUARE INCH LBS
MEASURING METHOD AND LENGTH22.100 INCHES NOMINAL WORKING IN
THREAD DIRECTIONRIGHT-HAND FIRST END
SPECIAL FEATURESINNER CONVEYING TUBE MATERIAL-PLASTIC,POLYCHLOROTRIFLUOROETHYLENE
THREAD SERIES DESIGNATORUNF FIRST END
THREAD CLASS2A FIRST END A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
422-2251Interchangeable
interchangeable cross-reference
interchangeable
640-363-275Interchangeable
interchangeable cross-reference
interchangeable
HF1201K01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 422-2251?
422-2251 is a RELAY,ELECTROMAGNETIC.
What parts can replace 422-2251?
There are 3 known substitutes for 422-2251: 422-2251, 640-363-275, HF1201K01. Substitute compatibility should be verified for your specific system.
What is the NSN for 422-2251?
422-2251 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-545-5617. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026