PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 25551 ASSY AL1
25551 ASSY AL1 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY FLOW CONTROL DEVICE, connection_type: BUTT WELD PIPE ALL ENDS, connection_style: BEVELED (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, operating_pressure: 4500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, valve_operation_method: MANUAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-265-0415, 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
25551 ASSY AL1
NSN: 4820-01-265-0415
FSC: 4820
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY FLOW CONTROL DEVICE
connection_typeBUTT WELD PIPE ALL ENDS
connection_styleBEVELED (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
operating_pressure4500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
valve_operation_methodMANUAL
media_for_which_designedWATER, FRESH SINGLE RESPONSE
criticality_code_justificationZZZY
nominal_pipe_size_accommodated2.000 INCHES ALL ENDS IN
reference_number_differentiating_characteristicsQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN4820-01-265-0415
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 25551 ASSY AL1 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
•
NOMINAL PIPE SIZE ACCOMMODATED: 2.000 INCHES ALL ENDS IN
•
CONNECTION TYPE: BUTT WELD PIPE ALL ENDS
•
MATERIAL: PLASTIC POLYAMIDE NYLON SEAT
•
OPERATING PRESSURE: 4500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
VALVE OPERATION METHOD: MANUAL
•
STYLE DESIGNATOR: STRAIGHT THRU
•
CRITICALITY CODE JUSTIFICATION: ZZZY
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NOMINAL PIPE SIZE ACCOMMODATED2.000 INCHES ALL ENDS IN
CONNECTION TYPEBUTT WELD PIPE ALL ENDS
MATERIALPLASTIC POLYAMIDE NYLON SEAT
OPERATING PRESSURE4500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VALVE OPERATION METHODMANUAL
STYLE DESIGNATORSTRAIGHT THRU
CRITICALITY CODE JUSTIFICATIONZZZY
MEDIA FOR WHICH DESIGNEDWATER, FRESH SINGLE RESPONSE
CONNECTION STYLEBEVELED (PIPE) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
145636Interchangeable
interchangeable cross-reference
interchangeable
5-32BALLGRADE3Interchangeable
interchangeable cross-reference
interchangeable
NDC43598-0811-12Interchangeable
interchangeable cross-reference
interchangeable
NDC00904-6717-60Interchangeable
interchangeable cross-reference
interchangeable
96-0186Interchangeable
interchangeable cross-reference
interchangeable
255551Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 25551 ASSY AL1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 25551 ASSY AL1?
25551 ASSY AL1 is a VALVE,BALL.
What parts can replace 25551 ASSY AL1?
There are 7 known substitutes for 25551 ASSY AL1: 145636, 5-32BALLGRADE3, NDC43598-0811-12 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25551 ASSY AL1?
25551 ASSY AL1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-265-0415. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 25551 ASSY AL1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026