PartsTable
Technical Data Sheet
20210H51M ✓ 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: NICKEL ALLOY FLOW CONTROL DEVICE, bonnet_type: INSIDE SPRING, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: SOCKET WITH BRAZING RING ALL ENDS, style_designator: ANGLE, operating_pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-171-4392, 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
20210H51M
NSN: 4820-01-171-4392
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialNICKEL ALLOY FLOW CONTROL DEVICE
bonnet_typeINSIDE SPRING
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSOCKET WITH BRAZING RING ALL ENDS
style_designatorANGLE
operating_pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
maximum_operating_temp165.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
end_item_identificationLOS ANGELES CLASS SSN(688)
bonnet_attachment_methodBOLTED
NSN4820-01-171-4392
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 20210H51M · 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
VALVE OPERATION METHOD: AUTOMATIC
CRITICALITY CODE JUSTIFICATION: ZZZY
MATERIAL: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 FLOW CONTROL DEVICE
STYLE DESIGNATOR: ANGLE
CONNECTION STYLE: GASKET SEAL (PIPE) FIRST END
CONNECTION TYPE: UNTHREADED INTERNAL PIPE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 FLOW CONTROL DEVICE
STYLE DESIGNATORANGLE
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 SEAT
CONNECTION STYLEGASKET SEAL (PIPE) FIRST END
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
DISK LOADING METHODSPRING
BONNET ATTACHMENT METHODBOLTED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
20210J02S0045Interchangeable
interchangeable cross-reference
interchangeable
20210H51MInterchangeable
interchangeable cross-reference
interchangeable
D54UU-05 1/2 INCHInterchangeable
interchangeable cross-reference
interchangeable
20210H51MCPInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20210H51M?
20210H51M is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace 20210H51M?
There are 4 known substitutes for 20210H51M: 20210J02S0045, 20210H51M, D54UU-05 1/2 INCH and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20210H51M?
20210H51M is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-171-4392. This indicates validated use in U.S. government and defense supply chains.
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