911-558 — VALVE,BUTTERFLY

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

911-558: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY FLOW CONTROL DEVICE, special_features: MARINE TRIM THROTTLING HANDLE. NON-SPARKING FOR FUEL SERVICE, style_designator: STRAIGHT THRU, mounting_facility: WAFER, operating_pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, maximum_operating_temp: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-271-7890, 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

911-558

NSN: 4820-01-271-7890
FSC: 4820 — Valves, Nonpowered
CAGE: 1NB39 — DOVER RESOURCES, INC. DIV NORRISEAL (USA)

SPECIFICATIONS

material	NICKEL ALLOY FLOW CONTROL DEVICE
special_features	MARINE TRIM THROTTLING HANDLE. NON-SPARKING FOR FUEL SERVICE
style_designator	STRAIGHT THRU
mounting_facility	WAFER
operating_pressure	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp	400.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_method	MANUAL
end_item_identification	MODEL D2030-645A-1FM A
material_document_and_classification	QQ-N-288 COMP A OR E FED SPEC SINGLE MATERIAL RESPONSE SEAT
NSN	4820-01-271-7890

COMPONENT DIAGRAM

KEY FEATURES

•

STYLE DESIGNATOR: STRAIGHT THRU

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY

•

OPERATING PRESSURE: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS

•

MAXIMUM OPERATING TEMP: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF

•

MOUNTING FACILITY: WAFER

TECHNICAL CHARACTERISTICS

STYLE DESIGNATOR	STRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B164 CLASS A ASSN STD SINGLE MATERIAL RESPONSE STEM
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-288 COMP A OR E FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-288 COMP A OR E FED SPEC SINGLE MATERIAL RESPONSE SEAT
OPERATING PRESSURE	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP	400.0 FAHRENHEIT SINGLE RESPONSE DEGF
MOUNTING FACILITY	WAFER
SPECIAL FEATURES	MARINE TRIM THROTTLING HANDLE. NON-SPARKING FOR FUEL SERVICE
END ITEM IDENTIFICATION	MODEL D2030-645A-1FM A

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

911D558 MDL 2.5D2030-645A-1FMSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

2.5 D2030-645A-1FMSame 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 911-558?

911-558 is a VALVE,BUTTERFLY.

What parts can replace 911-558?

There are 2 known substitutes for 911-558: 911D558 MDL 2.5D2030-645A-1FM, 2.5 D2030-645A-1FM. Substitute compatibility should be verified for your specific system.

What is the NSN for 911-558?

911-558 is cataloged in the U.S. Government catalog under NSN 4820-01-271-7890. This indicates validated use in U.S. government and defense supply chains.

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911-558 — VALVE,BUTTERFLY

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