PartsTable
Technical Data Sheet
Download PDF

909901 — Technical Data Sheet

✓ Government record, cited
— · 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, hole_diameter: 0.375 INCHES NOMINAL IN, outside_diameter: 5.000 INCHES NOMINAL IN, style_designator: FLAT, material_thickness: 0.125 INCHES NOMINAL IN, bolt_circle_diameter: 4.281 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-042-9992, 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
909901
NSN: 4820-01-042-9992
FSC: 4820 — Valves, Nonpowered
CAGE: 62555 — VACU-BLAST CORP (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
hole_diameter0.375 INCHES NOMINAL IN
outside_diameter5.000 INCHES NOMINAL IN
style_designatorFLAT
bolt_hole_quantity6
material_thickness0.125 INCHES NOMINAL IN
bolt_circle_diameter4.281 INCHES NOMINAL IN
center_hole_diameter0.490 INCHES NOMINAL IN
NSN4820-01-042-9992
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 909901 · 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: 5.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 6
•
BOLT CIRCLE DIAMETER: 4.281 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.490 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
HOLE DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER5.000 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
BOLT CIRCLE DIAMETER4.281 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.490 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
HOLE DIAMETER0.375 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
Ready to buy 909901?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 909901?
909901 is a DIAPHRAGM,VALVE,FLAT.
What is the NSN for 909901?
909901 is cataloged in the U.S. Government catalog under NSN 4820-01-042-9992. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 909901

✓ 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.