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Technical Data Sheet
PartsTable / COMPONENT / 81551-01-1/4INCID882057736
81551-01-1/4INCID882057736 ✓ 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 81551-01-1/4INCID882057736 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-181-9443, 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
81551-01-1/4INCID882057736
NSN: 4820-00-181-9443
FSC: 4820
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
Part Number81551-01-1/4INCID882057736
NSN4820-00-181-9443
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81551-01-1/4INCID882057736 · 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
•
MAXIMUM OPERATING TEMP: 775.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
•
OPERATING PRESSURE: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
FLOW CONTROL DEVICE: DISK
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP775.0 FAHRENHEIT SINGLE RESPONSE DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE SEAT
OPERATING PRESSURE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A105 GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-17131,MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE STEM
FLOW CONTROL DEVICEDISK
CONNECTION STYLESOCKET ALL ENDS
FEATURES PROVIDEDBONNET PACKING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
8072Interchangeable
interchangeable cross-reference
interchangeable
DDDB61Interchangeable
interchangeable cross-reference
interchangeable
441108Interchangeable
interchangeable cross-reference
interchangeable
120A322Interchangeable
interchangeable cross-reference
interchangeable
803-2177525-C111Interchangeable
interchangeable cross-reference
interchangeable
807200Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81551-01-1/4INCID882057736?
81551-01-1/4INCID882057736 is a 81551-01-1/4INCID882057736.
What parts can replace 81551-01-1/4INCID882057736?
There are 16 known substitutes for 81551-01-1/4INCID882057736: 8072, DDDB61, 441108 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81551-01-1/4INCID882057736?
81551-01-1/4INCID882057736 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-181-9443. 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