PartsTable
Technical Data Sheet
6421B2PC51 ✓ 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 HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: STEEL STEM, bonnet_type: INSIDE SPRING, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN,OPTIONAL END(PIPE) ALL ENDS, style_designator: ANGLE, thread_direction: RIGHT-HAND 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 4820-00-300-7767, 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
6421B2PC51
NSN: 4820-00-300-7767
FSC: 4820
CAGE: 03268 — AMES IRON WORKS (USA)
SPECIFICATIONS
materialSTEEL STEM
bonnet_typeINSIDE SPRING
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN,OPTIONAL END(PIPE) ALL ENDS
style_designatorANGLE
thread_directionRIGHT-HAND ALL ENDS
operating_pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
nominal_thread_size0.250 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
bonnet_attachment_methodINTEGRAL
NSN4820-00-300-7767
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 6421B2PC51 · 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
OPERATING PRESSURE: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
FLOW CONTROL DEVICE: DISK
BONNET TYPE: INSIDE SPRING
VALVE OPERATION METHOD: AUTOMATIC
BONNET ATTACHMENT METHOD: INTEGRAL
THREAD SERIES DESIGNATOR: NPT ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
FLOW CONTROL DEVICEDISK
BONNET TYPEINSIDE SPRING
VALVE OPERATION METHODAUTOMATIC
BONNET ATTACHMENT METHODINTEGRAL
THREAD SERIES DESIGNATORNPT ALL ENDS
MATERIALSTEEL FLOW CONTROL DEVICE
THREAD DIRECTIONRIGHT-HAND ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
81725Interchangeable
interchangeable cross-reference
interchangeable
09001A0113 ITEM 19Interchangeable
interchangeable cross-reference
interchangeable
326551Interchangeable
interchangeable cross-reference
interchangeable
H502Interchangeable
interchangeable cross-reference
interchangeable
0000114Interchangeable
interchangeable cross-reference
interchangeable
LOCTITE 587Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6421B2PC51?
6421B2PC51 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 6421B2PC51?
There are 20 known substitutes for 6421B2PC51: 81725, 09001A0113 ITEM 19, 326551 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6421B2PC51?
6421B2PC51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-300-7767. This indicates validated use in U.S. government and defense supply chains.
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