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Technical Data Sheet
PartsTable / COMPONENT / 21849N
21849N ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include connection_type: BUTT WELD PIPE FIRST END, connection_style: BEVELED (PIPE) FIRST END, style_designator: STRAIGHT THRU, operating_pressure: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, flow_control_device: STEM, maximum_operating_temp: 975.0 FAHRENHEIT SINGLE RESPONSE DEGF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-935-5394, 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
21849N
NSN: 4820-00-935-5394
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
connection_typeBUTT WELD PIPE FIRST END
connection_styleBEVELED (PIPE) FIRST END
style_designatorSTRAIGHT THRU
operating_pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceSTEM
maximum_operating_temp975.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodAIR
media_for_which_designedSTEAM SINGLE RESPONSE
nominal_pipe_size_accommodated3.500 INCHES FIRST END IN
reference_number_differentiating_characteristicsAS DIFFERENTIATED BY 3 1/2 IN. VALVE SIZE,PACS AAJJ,ABJH AND MODIFIED WITH ASA 5100 FLANGES IN
NSN4820-00-935-5394
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21849N · 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
•
CONNECTION TYPE: BUTT WELD PIPE FIRST END
•
FLOW CONTROL DEVICE: STEM
•
NOMINAL PIPE SIZE ACCOMMODATED: 3.500 INCHES FIRST END IN
•
CONNECTION STYLE: BEVELED (PIPE) FIRST END
•
VALVE OPERATION METHOD: AIR
•
MAXIMUM OPERATING TEMP: 975.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MEDIA FOR WHICH DESIGNED: STEAM SINGLE RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPEBUTT WELD PIPE FIRST END
FLOW CONTROL DEVICESTEM
NOMINAL PIPE SIZE ACCOMMODATED3.500 INCHES FIRST END IN
CONNECTION STYLEBEVELED (PIPE) FIRST END
VALVE OPERATION METHODAIR
MAXIMUM OPERATING TEMP975.0 FAHRENHEIT SINGLE RESPONSE DEGF
STYLE DESIGNATORSTRAIGHT THRU
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
OPERATING PRESSURE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY 3 1/2 IN. VALVE SIZE,PACS AAJJ,ABJH AND MODIFIED WITH ASA 5100 FLANGES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
21849NPC14Interchangeable
interchangeable cross-reference
interchangeable
52445-00-58Interchangeable
interchangeable cross-reference
interchangeable
21849NInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21849N?
21849N is a DISK,VALVE.
What parts can replace 21849N?
There are 3 known substitutes for 21849N: 21849NPC14, 52445-00-58, 21849N. Substitute compatibility should be verified for your specific system.
What is the NSN for 21849N?
21849N is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-935-5394. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026