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44B3521-753A — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

44B3521-753A: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER FABRIC REINFORCED, hole_diameter: 0.380 INCHES NOMINAL IN, outside_diameter: 9.215 INCHES NOMINAL IN, style_designator: FLAT, bolt_hole_quantity: 12, material_thickness: 0.135 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-620-7381, 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
44B3521-753A
NSN: 4820-00-620-7381
FSC: 4820 — Valves, Nonpowered
CAGE: 72957 — ELLIOTT COMPANY DIV JEANNETTE (USA)
SPECIFICATIONS
materialRUBBER FABRIC REINFORCED
hole_diameter0.380 INCHES NOMINAL IN
outside_diameter9.215 INCHES NOMINAL IN
style_designatorFLAT
bolt_hole_quantity12
material_thickness0.135 INCHES NOMINAL IN
bolt_circle_diameter8.250 INCHES NOMINAL IN
center_hole_diameter0.375 INCHES NOMINAL IN
NSN4820-00-620-7381
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 44B3521-753A · 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
•
OUTSIDE DIAMETER: 9.215 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.135 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 12
•
BOLT CIRCLE DIAMETER: 8.250 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.375 INCHES NOMINAL IN
•
MATERIAL: RUBBER FABRIC REINFORCED
•
HOLE DIAMETER: 0.380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER9.215 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.135 INCHES NOMINAL IN
BOLT HOLE QUANTITY12
BOLT CIRCLE DIAMETER8.250 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.375 INCHES NOMINAL IN
MATERIALRUBBER FABRIC REINFORCED
HOLE DIAMETER0.380 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 44B3521-753A?
44B3521-753A is a DIAPHRAGM,VALVE,FLAT.
What is the NSN for 44B3521-753A?
44B3521-753A is cataloged in the U.S. Government catalog under NSN 4820-00-620-7381. 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.