PartsTable
Technical Data Sheet
16649-18 ✓ 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: STEEL CORROSION RESISTING AND SILICON FLOW CONTROL DEVICE, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND FIRST END, surface_treatment: ANODIZE LOCATION NOT OTHERWISE SPECIFIED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-342-4799, 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
16649-18
NSN: 4820-00-342-4799
FSC: 4820
CAGE: 33654 — HOWDEN FLUID SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING AND SILICON FLOW CONTROL DEVICE
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND FIRST END
surface_treatmentANODIZE LOCATION NOT OTHERWISE SPECIFIED
operating_pressure30.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
nominal_thread_size0.125 INCHES FIRST END IN
maximum_operating_temp-70.0 FAHRENHEIT FIRST RESPONSE DEGF
valve_operation_methodAUTOMATIC
NSN4820-00-342-4799
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 16649-18 · 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: ALUMINUM ALLOY 2024 SEAT
STYLE DESIGNATOR: STRAIGHT THRU
MAXIMUM OPERATING TEMP: -70.0 FAHRENHEIT FIRST RESPONSE DEGF
CONNECTION STYLE: PLAIN (PIPE) FIRST END
MEDIA FOR WHICH DESIGNED: OXYGEN, GASEOUS SECOND RESPONSE
NOMINAL THREAD SIZE: 0.125 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALALUMINUM ALLOY 2024 SEAT
STYLE DESIGNATORSTRAIGHT THRU
MAXIMUM OPERATING TEMP-70.0 FAHRENHEIT FIRST RESPONSE DEGF
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT SECOND RESPONSE DEGF
CONNECTION STYLEPLAIN (PIPE) FIRST END
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SECOND RESPONSE
NOMINAL THREAD SIZE0.125 INCHES FIRST END IN
MATERIALALUMINUM ALLOY 2024 BODY
THREAD SERIES DESIGNATORNPT FIRST END
OPERATING PRESSURE30.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
16-649Interchangeable
interchangeable cross-reference
interchangeable
E524Interchangeable
interchangeable cross-reference
interchangeable
122-660345 PC 30Interchangeable
interchangeable cross-reference
interchangeable
200954Interchangeable
interchangeable cross-reference
interchangeable
122-5277738 ITEM 33Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 16649-18?
16649-18 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace 16649-18?
There are 15 known substitutes for 16649-18: 16-649, E524, 122-660345 PC 30 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 16649-18?
16649-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-342-4799. This indicates validated use in U.S. government and defense supply chains.
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