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35521A — NOZZLE,OIL BURNER,PRESSURE ATOMI

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

35521A: NOZZLE,OIL BURNER,PRESSURE ATOMI.

NOZZLE,OIL BURNER,PRESSURE ATOMI. Key specifications include material: STEEL CORROSION RESISTING OVERALL, flange_diameter: 1.375 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.938 INCHES NOMINAL IN, body_inside_diameter: 0.750 INCHES NOMINAL IN, body_outside_diameter: 1.184 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-020-9967, 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
35521A
NSN: 4820-01-020-9967
NIINs: 010209967, 010310532
FSC: 4820 — Valves, Nonpowered
CAGE: 58529 — THE BABCOCK & WILCOX COMPANY DBA B & W SERVICE CO DIV B&W SERVICE COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flange_diameter1.375 INCHES NOMINAL IN
special_featuresW/EIGHT 0.188 IN. W BY 0.125 IN. DP SLOTS ON OUTER PERIPHERY OF FLANGE,0.187 IN. W BY 0.239 IN. DP GROOVE ON BODY 0.125 IN. FROM BOTTOM IN
style_designatorPLAIN FLANGED
under_flange_height0.938 INCHES NOMINAL IN
body_inside_diameter0.750 INCHES NOMINAL IN
body_outside_diameter1.184 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.375 INCHES NOMINAL IN
general_characteristics_item_descriptionSTEEL; 0.750 IN. ID,1.375 IN. MAJOR 0.938 IN. MINOR OD,1.312 IN. H IN
NSN4820-01-020-9967
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 35521A · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.375 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.375 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.184 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.938 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL IN
FLANGE DIAMETER1.375 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.184 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.750 INCHES NOMINAL IN
SPECIAL FEATURESW/EIGHT 0.188 IN. W BY 0.125 IN. DP SLOTS ON OUTER PERIPHERY OF FLANGE,0.187 IN. W BY 0.239 IN. DP GROOVE ON BODY 0.125 IN. FROM BOTTOM IN
UNDER FLANGE HEIGHT0.938 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 5
2073F-7Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
7001214Reference document
Same NSN cross-reference
Reference document — Secondary reference
2073F PIECE 151Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5463EPC151Reference document
Same NSN cross-reference
Reference document — Secondary reference
2073F-7 PIECE 151Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 35521A?
35521A is a NOZZLE,OIL BURNER,PRESSURE ATOMI.
What parts can replace 35521A?
There are 5 known substitutes for 35521A: 2073F-7, 7001214, 2073F PIECE 151 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 35521A?
35521A is cataloged in the U.S. Government catalog under NSN 4820-01-020-9967. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.