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Technical Data Sheet
PartsTable / COMPONENT / QS-4-2TC
QS-4-2TC ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

PARTS KIT,ENGINE QUICK START VAL. Key specifications include material: STEEL COMP 6150 OVERALL, end_style: SPRING END,GROUND BOTH ENDS, inside_diameter: 0.413 INCHES NOMINAL IN, style_designator: CYLINDRICAL, spring_free_length: 3.125 INCHES NOMINAL IN, coil_helix_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-067-8276, 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
QS-4-2TC
NSN: 4810-01-067-8276
FSC: 4810
CAGE: 61112 — COOPER INDUSTRIES INC COOPER HAND TOOLS DIV TURNER PLANT (USA)
SPECIFICATIONS
materialSTEEL COMP 6150 OVERALL
end_styleSPRING END,GROUND BOTH ENDS
inside_diameter0.413 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length3.125 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
spring_free_outside_diameter0.625 INCHES NOMINAL IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4810-01-067-8276
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: QS-4-2TC · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
6050Interchangeable
interchangeable cross-reference
interchangeable
12Z3042-56Interchangeable
interchangeable cross-reference
interchangeable
1124Interchangeable
interchangeable cross-reference
interchangeable
69778Interchangeable
interchangeable cross-reference
interchangeable
68401PC13Interchangeable
interchangeable cross-reference
interchangeable
SAE-J516Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is QS-4-2TC?
QS-4-2TC is a PARTS KIT,ENGINE QUICK START VAL.
What parts can replace QS-4-2TC?
There are 20 known substitutes for QS-4-2TC: 6050, 12Z3042-56, 1124 and 17 more. Substitute compatibility should be verified for your specific system.
Is QS-4-2TC still available?
QS-4-2TC is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026