PartsTable
Technical Data Sheet
Download PDF

R64273 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

R64273: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER, hole_diameter: 0.310 INCHES NOMINAL IN, outside_diameter: 4.515 INCHES NOMINAL IN, special_features: PERIPHERAL HOLES ARE OPEN TO EDGE, style_designator: FLAT, material_thickness: 0.074 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-036-0728, 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
R64273
NSN: 4820-01-036-0728
FSC: 4820 — Valves, Nonpowered
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER
hole_diameter0.310 INCHES NOMINAL IN
outside_diameter4.515 INCHES NOMINAL IN
special_featuresPERIPHERAL HOLES ARE OPEN TO EDGE
style_designatorFLAT
bolt_hole_quantity4
material_thickness0.074 INCHES NOMINAL IN
bolt_circle_diameter3.960 INCHES NOMINAL IN
NSN4820-01-036-0728
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: R64273 · 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: 4.515 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.074 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 4
•
BOLT CIRCLE DIAMETER: 3.960 INCHES NOMINAL IN
•
MATERIAL: RUBBER
•
HOLE DIAMETER: 0.310 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER4.515 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.074 INCHES NOMINAL IN
BOLT HOLE QUANTITY4
BOLT CIRCLE DIAMETER3.960 INCHES NOMINAL IN
SPECIAL FEATURESPERIPHERAL HOLES ARE OPEN TO EDGE
MATERIALRUBBER
HOLE DIAMETER0.310 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 1
W112265AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy R64273?
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 R64273?
R64273 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace R64273?
There is 1 known substitute for R64273: W112265A. Substitute compatibility should be verified for your specific system.
What is the NSN for R64273?
R64273 is cataloged in the U.S. Government catalog under NSN 4820-01-036-0728. 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 — R64273

✓ 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.