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B-51801-1-16 — Technical Data Sheet

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— · 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,CHECK is a the manufacturer industrial component. Key specifications include thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: PLAIN (TUBE) ALL ENDS, nominal_thread_size: 0.063 INCHES ALL ENDS IN, valve_operation_method: MANUAL, thread_quantity_per_inch: 12 ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-618-3638, 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
B-51801-1-16
NSN: 4820-01-618-3638
FSC: 4820
CAGE: 08407 — MIRADA RESEARCH & MANUFACTURING, INC. (USA)
SPECIFICATIONS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_stylePLAIN (TUBE) ALL ENDS
nominal_thread_size0.063 INCHES ALL ENDS IN
valve_operation_methodMANUAL
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUN ALL ENDS
NSN4820-01-618-3638
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-51801-1-16 · 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
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
NOMINAL THREAD SIZE: 0.063 INCHES ALL ENDS IN
•
THREAD QUANTITY PER INCH: 12 ALL ENDS
•
CONNECTION STYLE: PLAIN (TUBE) ALL ENDS
•
THREAD SERIES DESIGNATOR: UN ALL ENDS
•
VALVE OPERATION METHOD: MANUAL
•
THREAD CLASS: 2A ALL ENDS A
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
NOMINAL THREAD SIZE0.063 INCHES ALL ENDS IN
THREAD QUANTITY PER INCH12 ALL ENDS
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
THREAD SERIES DESIGNATORUN ALL ENDS
VALVE OPERATION METHODMANUAL
THREAD CLASS2A ALL ENDS A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
A2622MInterchangeable
interchangeable cross-reference
interchangeable
C5000924-2Interchangeable
interchangeable cross-reference
interchangeable
SC145-0039-8Interchangeable
interchangeable cross-reference
interchangeable
N2238PC49Interchangeable
interchangeable cross-reference
interchangeable
N2262PC49Interchangeable
interchangeable cross-reference
interchangeable
248-22Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-51801-1-16?
B-51801-1-16 is a VALVE,CHECK.
What parts can replace B-51801-1-16?
There are 7 known substitutes for B-51801-1-16: A2622M, C5000924-2, SC145-0039-8 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-51801-1-16?
B-51801-1-16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-618-3638. 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: September 2026