PartsTable
Technical Data Sheet
1801576 ✓ 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 WEIGHT,COUNTERBALANCE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 AND STEEL COMP 303 BODY, connection_type: THREADED INTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) SECOND END, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND FIRST END, mounting_position: HORIZONTAL OR VERTICAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-744-1239, 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
1801576
NSN: 4820-00-744-1239
FSC: 4820
CAGE: 21877 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 AND STEEL COMP 303 BODY
connection_typeTHREADED INTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) SECOND END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size0.125 INCHES FIRST END IN
maximum_operating_temp200.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAUTOMATIC
NSN4820-00-744-1239
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 1801576 · 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
MEDIA FOR WHICH DESIGNED: AIR FIRST RESPONSE
MAXIMUM OPERATING TEMP: 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
FLOW CONTROL DEVICE: POPPET
THREAD DIRECTION: RIGHT-HAND FIRST END
THREAD SERIES DESIGNATOR: NPT FIRST END
NOMINAL THREAD SIZE: 0.125 INCHES FIRST END IN
MOUNTING POSITION: HORIZONTAL OR VERTICAL
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT SINGLE RESPONSE DEGF
FLOW CONTROL DEVICEPOPPET
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD SERIES DESIGNATORNPT FIRST END
NOMINAL THREAD SIZE0.125 INCHES FIRST END IN
MOUNTING POSITIONHORIZONTAL OR VERTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE SEAT
THREAD DIRECTIONRIGHT-HAND SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
481181PC5Interchangeable
interchangeable cross-reference
interchangeable
481181Interchangeable
interchangeable cross-reference
interchangeable
481181S60Interchangeable
interchangeable cross-reference
interchangeable
16054Interchangeable
interchangeable cross-reference
interchangeable
481-1/8B1-2Interchangeable
Same NIIN cross-reference
interchangeable
481-1/8B-2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1801576?
1801576 is a WEIGHT,COUNTERBALANCE.
What parts can replace 1801576?
There are 7 known substitutes for 1801576: 481181PC5, 481181, 481181S60 and 4 more. Substitute compatibility should be verified for your specific system.
Is 1801576 still available?
1801576 is currently cancelled.
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