128SCP185 — VALVE,CHECK

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

128SCP185: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_style: FLARED (TUBE) FIRST END, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-083-1235, 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

128SCP185

NSN: 4820-00-083-1235
FSC: 4820 — Valves, Nonpowered
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY BODY
seat_angle	37.0 DEGREES FIRST END
thread_class	3A FIRST END A
connection_style	FLARED (TUBE) FIRST END
style_designator	STRAIGHT THRU
thread_direction	RIGHT-HAND SECOND END
surface_treatment	ANODIZE
disk_loading_method	SPRING
flow_control_device	POPPET
nominal_thread_size	0.437 INCHES FIRST END IN
valve_operation_method	AUTOMATIC
thread_series_designator	UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END
NSN	4820-00-083-1235

COMPONENT DIAGRAM

KEY FEATURES

•

FLOW CONTROL DEVICE: POPPET

•

CONNECTION STYLE: FLARED (TUBE) FIRST END

•

STYLE DESIGNATOR: STRAIGHT THRU

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY

•

THREAD DIRECTION: RIGHT-HAND SECOND END

TECHNICAL CHARACTERISTICS

FLOW CONTROL DEVICE	POPPET
CONNECTION STYLE	FLARED (TUBE) FIRST END
CONNECTION STYLE	GASKET SEAL (BOSS) SECOND END
STYLE DESIGNATOR	STRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
THREAD DIRECTION	RIGHT-HAND SECOND END
THREAD DIRECTION	RIGHT-HAND FIRST END
NOMINAL THREAD SIZE	0.437 INCHES FIRST END IN
NOMINAL THREAD SIZE	0.438 INCHES SECOND END 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 3

128SCP185-1Reference document

Same NSN cross-reference

Reference document — Secondary reference

128SCP185-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

LH10690Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 128SCP185?

128SCP185 is a VALVE,CHECK.

What parts can replace 128SCP185?

There are 3 known substitutes for 128SCP185: 128SCP185-1, 128SCP185-5, LH10690. Substitute compatibility should be verified for your specific system.

What is the NSN for 128SCP185?

128SCP185 is cataloged in the U.S. Government catalog under NSN 4820-00-083-1235. This indicates validated use in U.S. government and defense supply chains.

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