PartsTable
Technical Data Sheet
6447B ✓ 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,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, special_features: POP-OFF TYPE, style_designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY., thread_direction: RIGHT-HAND FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-122-9775, 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
6447B
NSN: 4820-01-122-9775
FSC: 4820
CAGE: 93236 — DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN A JOINT VENTURE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
special_featuresPOP-OFF TYPE
style_designatorSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
thread_directionRIGHT-HAND FIRST END
operating_pressure200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_devicePOPPET
nominal_thread_size0.250 INCHES FIRST END IN
maximum_operating_temp-40.0 FAHRENHEIT FIRST RESPONSE DEGF
valve_operation_methodAUTOMATIC
media_for_which_designedAIR FIRST RESPONSE
NSN4820-01-122-9775
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 6447B · 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
THREAD SERIES DESIGNATOR: NPT FIRST END
OPERATING PRESSURE: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
OPENING PRESSURE SETTING: 150.0 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD SIZE: 0.250 INCHES FIRST END IN
VALVE OPERATION METHOD: AUTOMATIC
MAXIMUM OPERATING TEMP: 250.0 FAHRENHEIT SECOND RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT FIRST END
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIAL FEATURESPOP-OFF TYPE
OPENING PRESSURE SETTING150.0 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
VALVE OPERATION METHODAUTOMATIC
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SECOND RESPONSE DEGF
MAXIMUM OPERATING TEMP-40.0 FAHRENHEIT FIRST RESPONSE DEGF
CONNECTION STYLEPLAIN (PIPE) FIRST END
MEDIA FOR WHICH DESIGNEDALCOHOL, ETHYL SECOND RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
0199Interchangeable
interchangeable cross-reference
interchangeable
15Interchangeable
interchangeable cross-reference
interchangeable
6447Interchangeable
interchangeable cross-reference
interchangeable
KS14259L1Interchangeable
interchangeable cross-reference
interchangeable
R6466Interchangeable
interchangeable cross-reference
interchangeable
6446Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6447B?
6447B is a VALVE,SAFETY RELIEF.
What parts can replace 6447B?
There are 12 known substitutes for 6447B: 0199, 15, 6447 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6447B?
6447B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-122-9775. This indicates validated use in U.S. government and defense supply chains.
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