D11784 — SEAT,VALVE

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

D11784: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_length: 0.650 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 3.913 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 3.500 INCHES SINGLE THREADED PORTION IN, under_flange_height: 0.843 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-124-5319, 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

D11784

NSN: 4820-01-124-5319
FSC: 4820 — Valves, Nonpowered
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
thread_length	0.650 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter	3.913 INCHES NOMINAL IN
style_designator	THREADED FLANGED
nominal_thread_size	3.500 INCHES SINGLE THREADED PORTION IN
under_flange_height	0.843 INCHES NOMINAL IN
seating_surface_shape	RADIAL
body_stepped_inside_diameter	2.500 INCHES NOMINAL FIRST STEP IN
flange_seat_to_disk_end_height	0.490 INCHES MINIMUM AND 0.708 INCHES MAXIMUM IN
material_document_and_classification	STM A351,GR.CF-8M ASSN STD SINGLE MATERIAL RESPONSE SEAT
NSN	4820-01-124-5319

COMPONENT DIAGRAM

KEY FEATURES

•

FLANGE SEAT TO DISK END HEIGHT: 0.490 INCHES MINIMUM AND 0.708 INCHES MAXIMUM IN

•

FLANGE DIAMETER: 3.913 INCHES NOMINAL IN

•

THREAD LENGTH: 0.650 INCHES NOMINAL SINGLE THREADED PORTION IN

•

BODY STEPPED INSIDE DIAMETER: 2.500 INCHES NOMINAL FIRST STEP IN

•

STYLE DESIGNATOR: THREADED FLANGED

•

MATERIAL DOCUMENT AND CLASSIFICATION: STM A351,GR.CF-8M ASSN STD SINGLE MATERIAL RESPONSE SEAT

•

NOMINAL THREAD SIZE: 3.500 INCHES SINGLE THREADED PORTION IN

TECHNICAL CHARACTERISTICS

FLANGE SEAT TO DISK END HEIGHT	0.490 INCHES MINIMUM AND 0.708 INCHES MAXIMUM IN
FLANGE DIAMETER	3.913 INCHES NOMINAL IN
THREAD LENGTH	0.650 INCHES NOMINAL SINGLE THREADED PORTION IN
BODY STEPPED INSIDE DIAMETER	2.500 INCHES NOMINAL FIRST STEP IN
BODY STEPPED INSIDE DIAMETER	3.000 INCHES NOMINAL SECOND STEP IN
STYLE DESIGNATOR	THREADED FLANGED
MATERIAL DOCUMENT AND CLASSIFICATION	STM A351,GR.CF-8M ASSN STD SINGLE MATERIAL RESPONSE SEAT
NOMINAL THREAD SIZE	3.500 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT	0.843 INCHES NOMINAL IN
MATERIAL	STEEL CORROSION RESISTING OVERALL

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

K-9505-BReference document

Same NSN cross-reference

Reference document — Drawing number reference only

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 D11784?

D11784 is a SEAT,VALVE.

What parts can replace D11784?

There is 1 known substitute for D11784: K-9505-B. Substitute compatibility should be verified for your specific system.

What is the NSN for D11784?

D11784 is cataloged in the U.S. Government catalog under NSN 4820-01-124-5319. This indicates validated use in U.S. government and defense supply chains.

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