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NBV420 — VALVE,BALL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NBV420: VALVE,BALL.

The VALVE,BALL is a the manufacturer industrial component. Key specifications include material: BRONZE BODY, valve_size: 9.000 INCHES9.000 INCHES IN, flange_shape: ROUND WITH HOLES ALL ENDSROUND WITH HOLES ALL ENDS, connection_type: FLANGE ALL ENDSFLANGE ALL ENDS, style_designator: STRAIGHT THRU FLANGED ENDSSTRAIGHT THRU FLANGED ENDS, nominal_thickness: 0.688 INCHES ALL ENDS0.688 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-178-2945, 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
NBV420
NSN: 4820-01-178-2945
FSC: 4820 — Valves, Nonpowered
CAGE: 13646 — WILO USA LLC (USA)
SPECIFICATIONS
materialBRONZE BODY
valve_size9.000 INCHES9.000 INCHES IN
flange_shapeROUND WITH HOLES ALL ENDSROUND WITH HOLES ALL ENDS
connection_typeFLANGE ALL ENDSFLANGE ALL ENDS
style_designatorSTRAIGHT THRU FLANGED ENDSSTRAIGHT THRU FLANGED ENDS
nominal_thickness0.688 INCHES ALL ENDS0.688 INCHES ALL ENDS IN
bolt_hole_quantity8 ALL ENDS8 ALL ENDS
flange_face_designPLAIN ALL ENDSPLAIN ALL ENDS
valve_operation_methodMANUALMANUAL
nominal_outside_diameter9.000 INCHES ALL ENDS9.000 INCHES ALL ENDS IN
bolt_hole_nominal_diameter0.750 INCHES ALL ENDS0.750 INCHES ALL ENDS IN
bolt_circle_nominal_diameter7.500 INCHES ALL ENDS7.500 INCHES ALL ENDS IN
NSN4820-01-178-2945
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NBV420 · 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 ENDSROUND WITH HOLES ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDSPLAIN ALL ENDS
•
BOLT CIRCLE NOMINAL DIAMETER: 7.500 INCHES ALL ENDS7.500 INCHES ALL ENDS IN
•
CONNECTION TYPE: FLANGE ALL ENDSFLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDSSTRAIGHT THRU FLANGED ENDS
•
BOLT HOLE NOMINAL DIAMETER: 0.750 INCHES ALL ENDS0.750 INCHES ALL ENDS IN
•
VALVE SIZE: 9.000 INCHES9.000 INCHES IN
•
NOMINAL OUTSIDE DIAMETER: 9.000 INCHES ALL ENDS9.000 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FLANGE SHAPEROUND WITH HOLES ALL ENDSROUND WITH HOLES ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDSPLAIN ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER7.500 INCHES ALL ENDS7.500 INCHES ALL ENDS IN
CONNECTION TYPEFLANGE ALL ENDSFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDSSTRAIGHT THRU FLANGED ENDS
BOLT HOLE NOMINAL DIAMETER0.750 INCHES ALL ENDS0.750 INCHES ALL ENDS IN
VALVE SIZE9.000 INCHES9.000 INCHES IN
NOMINAL OUTSIDE DIAMETER9.000 INCHES ALL ENDS9.000 INCHES ALL ENDS IN
BOLT HOLE QUANTITY8 ALL ENDS8 ALL ENDS
MATERIALBRONZE BODY
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 2
19-000.446 2WAY 2PORT 4INReference document
Same NSN cross-reference
Reference document — Secondary reference
19-000.446 2WAYReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 NBV420?
NBV420 is a VALVE,BALL.
What parts can replace NBV420?
There are 2 known substitutes for NBV420: 19-000.446 2WAY 2PORT 4IN, 19-000.446 2WAY. Substitute compatibility should be verified for your specific system.
What is the NSN for NBV420?
NBV420 is cataloged in the U.S. Government catalog under NSN 4820-01-178-2945. 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.