51157-D-380 — SEAT,VALVE

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

51157-D-380: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 0.904 INCHES NOMINAL IN, special_features: TWO WRENCHING LUGS ON SEAT END, style_designator: THREADED FLANGED. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-130-8775, 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

51157-D-380

NSN: 4820-01-130-8775
FSC: 4820 — Valves, Nonpowered
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)

SPECIFICATIONS

material	NICKEL ALLOY OVERALL
thread_class	2A SINGLE THREADED PORTION A
thread_length	0.250 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter	0.904 INCHES NOMINAL IN
special_features	TWO WRENCHING LUGS ON SEAT END
style_designator	THREADED FLANGED
seat_angle_in_deg	75.000 NOMINAL
nominal_thread_size	0.750 INCHES SINGLE THREADED PORTION IN
under_flange_height	0.312 INCHES NOMINAL IN
body_inside_diameter	0.468 INCHES NOMINAL IN
seating_surface_shape	ANGULAR
thread_quantity_per_inch	24 SINGLE THREADED PORTION
NSN	4820-01-130-8775

COMPONENT DIAGRAM

KEY FEATURES

•

FLANGE SEAT TO DISK END HEIGHT: 0.127 INCHES NOMINAL IN

•

FLANGE DIAMETER: 0.904 INCHES NOMINAL IN

•

THREAD LENGTH: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN

•

STYLE DESIGNATOR: THREADED FLANGED

•

BODY INSIDE DIAMETER: 0.468 INCHES NOMINAL IN

•

NOMINAL THREAD SIZE: 0.750 INCHES SINGLE THREADED PORTION IN

•

UNDER FLANGE HEIGHT: 0.312 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

FLANGE SEAT TO DISK END HEIGHT	0.127 INCHES NOMINAL IN
FLANGE DIAMETER	0.904 INCHES NOMINAL IN
THREAD LENGTH	0.250 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATOR	THREADED FLANGED
BODY INSIDE DIAMETER	0.468 INCHES NOMINAL IN
NOMINAL THREAD SIZE	0.750 INCHES SINGLE THREADED PORTION IN
SPECIAL FEATURES	TWO WRENCHING LUGS ON SEAT END
UNDER FLANGE HEIGHT	0.312 INCHES NOMINAL IN
THREAD CLASS	2A SINGLE THREADED PORTION A
THREAD QUANTITY PER INCH	24 SINGLE THREADED PORTION

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

51157DSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 51157-D-380?

51157-D-380 is a SEAT,VALVE.

What parts can replace 51157-D-380?

There is 1 known substitute for 51157-D-380: 51157D. Substitute compatibility should be verified for your specific system.

What is the NSN for 51157-D-380?

51157-D-380 is cataloged in the U.S. Government catalog under NSN 4820-01-130-8775. This indicates validated use in U.S. government and defense supply chains.

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51157-D-380 — SEAT,VALVE

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