PartsTable
Technical Data Sheet
A-A-50498 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include material: COPPER ALLOY FLOW CONTROL DEVICE, body_style: LOW OR MEDIUM PRESSURE (SCREWED), body_material: COPPER ALLOY 268, special_features: STRAINER ATTACHED, operating_pressure: 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, flow_control_device: POPPET. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-227-0154, 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
A-A-50498
NSN: 4820-00-227-0154
FSC: 4820
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY FLOW CONTROL DEVICE
body_styleLOW OR MEDIUM PRESSURE (SCREWED)
body_materialCOPPER ALLOY 268
special_featuresSTRAINER ATTACHED
operating_pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
flow_control_devicePOPPET
body_outside_diameter0.500 INCHES NOMINAL IN
end_connection_quantity1
media_for_which_designedHYDROCARBON FUELS AND OILS
renewable_seat_ring_typeTHREADED
first_end_connection_typeTHREADED INTERNAL PIPE
first_end_style_designatorPLAIN
NSN4820-00-227-0154
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: A-A-50498 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL: COPPER ALLOY SEAT
FIRST END NOMINAL PIPE SIZE ACCOMMODATED: 1.000 INCHES IN
FLOW CONTROL DEVICE: POPPET
BODY STYLE: LOW OR MEDIUM PRESSURE (SCREWED)
RENEWABLE SEAT RING TYPE: THREADED
FIRST END CONNECTION TYPE: THREADED INTERNAL PIPE
FIRST END STYLE DESIGNATOR: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALCOPPER ALLOY SEAT
FIRST END NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES IN
FLOW CONTROL DEVICEPOPPET
BODY STYLELOW OR MEDIUM PRESSURE (SCREWED)
RENEWABLE SEAT RING TYPETHREADED
FIRST END CONNECTION TYPETHREADED INTERNAL PIPE
FIRST END STYLE DESIGNATORPLAIN
END CONNECTION QUANTITY1
FIRST END THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
39-4Interchangeable
interchangeable cross-reference
interchangeable
112-4OHMSPORM20PCTInterchangeable
interchangeable cross-reference
interchangeable
2100-0077Interchangeable
interchangeable cross-reference
interchangeable
MILV16720Interchangeable
interchangeable cross-reference
interchangeable
97-1/2INInterchangeable
interchangeable cross-reference
interchangeable
A50498-BZ-1-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-A-50498?
A-A-50498 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace A-A-50498?
There are 15 known substitutes for A-A-50498: 39-4, 112-4OHMSPORM20PCT, 2100-0077 and 12 more. Substitute compatibility should be verified for your specific system.
Is A-A-50498 still available?
A-A-50498 is currently cancelled.
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