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L6751 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

L6751: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_style: FLARED (TUBE) ALL ENDS, style_designator: ANGLE, thread_direction: RIGHT-HAND ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-045-3544, 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
L6751
NSN: 4820-00-045-3544
FSC: 4820 — Valves, Nonpowered
CAGE: 46717 — PETTIBONE LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_angle37.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_styleFLARED (TUBE) ALL ENDS
style_designatorANGLE
thread_directionRIGHT-HAND ALL ENDS
features_providedPRESSURE TIGHT OUTLET SIDE
disk_loading_methodSPRING
flow_control_deviceCONE
nominal_thread_size0.750 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
opening_pressure_setting1750.0 POUNDS PER SQUARE INCH LBS
NSN4820-00-045-3544
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: L6751 · 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
KEY FEATURES
•
FLOW CONTROL DEVICE: CONE
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
STYLE DESIGNATOR: ANGLE
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES ALL ENDS IN
•
ADJUSTABLE PRESSURE RANGE: +1400.0 TO 2100.0 POUNDS PER SQUARE INCH LBS
•
FEATURES PROVIDED: PRESSURE TIGHT OUTLET SIDE
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICECONE
CONNECTION STYLEFLARED (TUBE) ALL ENDS
STYLE DESIGNATORANGLE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES ALL ENDS IN
ADJUSTABLE PRESSURE RANGE+1400.0 TO 2100.0 POUNDS PER SQUARE INCH LBS
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
SEAT ANGLE37.0 DEGREES ALL ENDS
DISK LOADING METHODSPRING
SUBSTITUTES & CROSS-REFERENCES 2
2-464-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
634XB10-8-2Reference 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 L6751?
L6751 is a VALVE,SAFETY RELIEF.
What parts can replace L6751?
There are 2 known substitutes for L6751: 2-464-1, 634XB10-8-2. Substitute compatibility should be verified for your specific system.
What is the NSN for L6751?
L6751 is cataloged in the U.S. Government catalog under NSN 4820-00-045-3544. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.