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298-00-543 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

298-00-543: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, valve_size: 8.000 INCHES IN, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: STRAIGHT THRU FLANGED ENDS, nominal_thickness: 1.125 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-277-6509, 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
298-00-543
NSN: 4820-01-277-6509
NIINs: 012776509, 012776531
FSC: 4820 — Valves, Nonpowered
CAGE: 16626 — CIRCOR INTL INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY
valve_size8.000 INCHES IN
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorSTRAIGHT THRU FLANGED ENDS
nominal_thickness1.125 INCHES ALL ENDS IN
bolt_hole_quantity14 ALL ENDS
flange_face_designPLAIN ALL ENDS
face_to_face_distance19.000 INCHES IN
valve_operation_methodMANUAL
nominal_outside_diameter12.375 INCHES ALL ENDS IN
bolt_hole_nominal_diameter0.688 INCHES ALL ENDS IN
NSN4820-01-277-6509
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 298-00-543 · 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
•
FLANGE SHAPE: ROUND WITH HOLES ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
BOLT CIRCLE NOMINAL DIAMETER: 11.062 INCHES ALL ENDS IN
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
BOLT HOLE NOMINAL DIAMETER: 0.688 INCHES ALL ENDS IN
•
VALVE SIZE: 8.000 INCHES IN
•
NOMINAL OUTSIDE DIAMETER: 12.375 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER11.062 INCHES ALL ENDS IN
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
BOLT HOLE NOMINAL DIAMETER0.688 INCHES ALL ENDS IN
VALVE SIZE8.000 INCHES IN
NOMINAL OUTSIDE DIAMETER12.375 INCHES ALL ENDS IN
BOLT HOLE QUANTITY14 ALL ENDS
FACE TO FACE DISTANCE19.000 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 2
298-00-543 8INReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
298-00-543 8IN LESS ACTUATORReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 298-00-543?
298-00-543 is a VALVE,BALL.
What parts can replace 298-00-543?
There are 2 known substitutes for 298-00-543: 298-00-543 8IN, 298-00-543 8IN LESS ACTUATOR. Substitute compatibility should be verified for your specific system.
What is the NSN for 298-00-543?
298-00-543 is cataloged in the U.S. Government catalog under NSN 4820-01-277-6509. 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.