11257B — DIAPHRAGM,ACTUATOR VALVE,SPECIAL

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

11257B: DIAPHRAGM,ACTUATOR VALVE,SPECIAL.

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include material: RUBBER, hole_diameter: 0.665 INCHES NOMINAL IN, overall_height: 1.750 INCHES NOMINAL IN, outside_diameter: 17.938 INCHES NOMINAL IN, special_features: ADDITIONAL MATERIAL: FIBER, style_designator: SPECIAL SHAPED. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-035-9433, 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

11257B

NSN: 4820-00-035-9433
FSC: 4820 — Valves, Nonpowered
CAGE: 04537 — ATWOOD & MORRILL CO., INC. DBA WEIR VALVES AND CONTROLS USA (USA)

SPECIFICATIONS

material	RUBBER
hole_diameter	0.665 INCHES NOMINAL IN
overall_height	1.750 INCHES NOMINAL IN
outside_diameter	17.938 INCHES NOMINAL IN
special_features	ADDITIONAL MATERIAL: FIBER
style_designator	SPECIAL SHAPED
bolt_hole_quantity	28
material_thickness	0.345 INCHES NOMINAL IN
bolt_circle_diameter	16.125 INCHES NOMINAL IN
center_hole_diameter	0.678 INCHES NOMINAL IN
taper_major_diameter	14.750 INCHES NOMINAL IN
taper_minor_diameter	8.000 INCHES NOMINAL IN
NSN	4820-00-035-9433

COMPONENT DIAGRAM

KEY FEATURES

•

OUTSIDE DIAMETER: 17.938 INCHES NOMINAL IN

•

TAPER MINOR DIAMETER: 8.000 INCHES NOMINAL IN

•

STYLE DESIGNATOR: SPECIAL SHAPED

•

TAPER MAJOR DIAMETER: 14.750 INCHES NOMINAL IN

•

MATERIAL THICKNESS: 0.345 INCHES NOMINAL IN

•

BOLT HOLE QUANTITY: 28

•

BOLT CIRCLE DIAMETER: 16.125 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	1.750 INCHES NOMINAL IN
OUTSIDE DIAMETER	17.938 INCHES NOMINAL IN
TAPER MINOR DIAMETER	8.000 INCHES NOMINAL IN
STYLE DESIGNATOR	SPECIAL SHAPED
TAPER MAJOR DIAMETER	14.750 INCHES NOMINAL IN
MATERIAL THICKNESS	0.345 INCHES NOMINAL IN
BOLT HOLE QUANTITY	28
BOLT CIRCLE DIAMETER	16.125 INCHES NOMINAL IN
SPECIAL FEATURES	ADDITIONAL MATERIAL: FIBER
CENTER HOLE DIAMETER	0.678 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

154Reference 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

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FREQUENTLY ASKED QUESTIONS

What is 11257B?

11257B is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.

What parts can replace 11257B?

There is 1 known substitute for 11257B: 154. Substitute compatibility should be verified for your specific system.

What is the NSN for 11257B?

11257B is cataloged in the U.S. Government catalog under NSN 4820-00-035-9433. This indicates validated use in U.S. government and defense supply chains.

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11257B — DIAPHRAGM,ACTUATOR VALVE,SPECIAL

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