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737204 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.281 INCHES NOMINAL SINGLE THREADED PORTION IN, special_features: TESTED IAW MIL-M-19595, style_designator: THREADED FLANGED, nominal_thread_size: 0.562 INCHES SINGLE THREADED PORTION IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-020-3395, 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
737204
NSN: 4820-01-020-3395
FSC: 4820
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.281 INCHES NOMINAL SINGLE THREADED PORTION IN
special_featuresTESTED IAW MIL-M-19595
style_designatorTHREADED FLANGED
nominal_thread_size0.562 INCHES SINGLE THREADED PORTION IN
under_flange_height0.562 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_series_designatorUNF SINGLE THREADED PORTION
body_stepped_inside_diameter0.281 INCHES NOMINAL SECOND STEP IN
criticality_code_justificationFEAT
flange_seat_to_disk_end_height0.344 INCHES NOMINAL IN
NSN4820-01-020-3395
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 737204 · 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
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,TYPE 1,ALLOY X6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD SERIES DESIGNATOR: UNF SINGLE THREADED PORTION
•
STYLE DESIGNATOR: THREADED FLANGED
•
NOMINAL THREAD SIZE: 0.562 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.562 INCHES NOMINAL IN
•
BODY STEPPED INSIDE DIAMETER: 0.281 INCHES NOMINAL SECOND STEP IN
TECHNICAL CHARACTERISTICS (FLIS)
SEATING SURFACE SHAPEANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,TYPE 1,ALLOY X6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY OVERALL
THREAD SERIES DESIGNATORUNF SINGLE THREADED PORTION
STYLE DESIGNATORTHREADED FLANGED
NOMINAL THREAD SIZE0.562 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.562 INCHES NOMINAL IN
BODY STEPPED INSIDE DIAMETER0.281 INCHES NOMINAL SECOND STEP IN
BODY STEPPED INSIDE DIAMETER0.125 INCHES NOMINAL FIRST STEP IN
FLANGE SEAT TO DISK END HEIGHT0.344 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
7372-04Interchangeable
interchangeable cross-reference
interchangeable
7372A-04Interchangeable
interchangeable cross-reference
interchangeable
7560Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 737204?
737204 is a SEAT,VALVE.
What parts can replace 737204?
There are 3 known substitutes for 737204: 7372-04, 7372A-04, 7560. Substitute compatibility should be verified for your specific system.
What is the NSN for 737204?
737204 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-020-3395. 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