640-1122-001 — VALVE,CHECK

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

640-1122-001: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING SEAT, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS, special_features: MODIFIED WITH RESTRICTOR HOLE SIZE 0.040IN. IN.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-261-4122, 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

640-1122-001

NSN: 4820-01-261-4122
FSC: 4820 — Valves, Nonpowered
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING SEAT
seat_angle	37.0 DEGREES ALL ENDS
thread_class	3A ALL ENDS A
connection_type	THREADED EXTERNAL TUBE ALL ENDS
connection_style	FLARED (TUBE) ALL ENDS
special_features	MODIFIED WITH RESTRICTOR HOLE SIZE 0.040IN. IN
style_designator	CROSS
thread_direction	RIGHT-HAND ALL ENDS
mounting_position	HORIZONTAL
flow_control_device	DISK
nominal_thread_size	0.750 INCHES ALL ENDS IN
valve_operation_method	MANUAL
NSN	4820-01-261-4122

COMPONENT DIAGRAM

KEY FEATURES

•

FLOW CONTROL DEVICE: DISK

•

CONNECTION STYLE: FLARED (TUBE) ALL ENDS

•

MOUNTING POSITION: HORIZONTAL

•

CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS

•

STYLE DESIGNATOR: CROSS

•

THREAD DIRECTION: RIGHT-HAND ALL ENDS

•

NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN

•

SEAT ANGLE: 37.0 DEGREES ALL ENDS

TECHNICAL CHARACTERISTICS

FLOW CONTROL DEVICE	DISK
CONNECTION STYLE	FLARED (TUBE) ALL ENDS
MOUNTING POSITION	HORIZONTAL
CONNECTION TYPE	THREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATOR	CROSS
THREAD DIRECTION	RIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE	0.750 INCHES ALL ENDS IN
SEAT ANGLE	37.0 DEGREES ALL ENDS
SPECIAL FEATURES	MODIFIED WITH RESTRICTOR HOLE SIZE 0.040IN. IN
THREAD CLASS	3A ALL ENDS 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 1

640-1122Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 640-1122-001?

640-1122-001 is a VALVE,CHECK.

What parts can replace 640-1122-001?

There is 1 known substitute for 640-1122-001: 640-1122. Substitute compatibility should be verified for your specific system.

What is the NSN for 640-1122-001?

640-1122-001 is cataloged in the U.S. Government catalog under NSN 4820-01-261-4122. This indicates validated use in U.S. government and defense supply chains.

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