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11611980 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

11611980: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, hole_diameter: 0.205 INCHES NOMINAL IN, outside_diameter: 3.125 INCHES NOMINAL IN, style_designator: FLAT, material_thickness: 0.055 INCHES NOMINAL IN, bolt_circle_diameter: 2.688 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-035-9917, 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
11611980
NSN: 4820-00-035-9917
FSC: 4820 — Valves, Nonpowered
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
hole_diameter0.205 INCHES NOMINAL IN
outside_diameter3.125 INCHES NOMINAL IN
style_designatorFLAT
bolt_hole_quantity8
material_thickness0.055 INCHES NOMINAL IN
bolt_circle_diameter2.688 INCHES NOMINAL IN
center_hole_diameter0.290 INCHES NOMINAL IN
NSN4820-00-035-9917
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 11611980 · 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: 3.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
MATERIAL THICKNESS: 0.055 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 8
•
BOLT CIRCLE DIAMETER: 2.688 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.290 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
HOLE DIAMETER: 0.205 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER3.125 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
MATERIAL THICKNESS0.055 INCHES NOMINAL IN
BOLT HOLE QUANTITY8
BOLT CIRCLE DIAMETER2.688 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.290 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
HOLE DIAMETER0.205 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 2
4820PL1337270Reference document
Same NSN cross-reference
Reference document — Informative reference only
C1796Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 11611980?
11611980 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 11611980?
There are 2 known substitutes for 11611980: 4820PL1337270, C1796. Substitute compatibility should be verified for your specific system.
What is the NSN for 11611980?
11611980 is cataloged in the U.S. Government catalog under NSN 4820-00-035-9917. 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.