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PI-NB2502 4IN — VALVE,GATE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

PI-NB2502 4IN: VALVE,GATE.

The VALVE,GATE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 922 BODY, stem_type: NONRISING, valve_size: 4.000 INCHES IN, bonnet_type: OUTSIDE SCREW-YOKE, pressure_class: ERR-060, connection_type: FLANGE, ROUND W/HOLES. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-435-1021, 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
PI-NB2502 4IN
NSN: 4820-01-435-1021
FSC: 4820 — Valves, Nonpowered
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY 922 BODY
stem_typeNONRISING
valve_size4.000 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
pressure_classERR-060
connection_typeFLANGE, ROUND W/HOLES
flange_diameter7.688 INCHES IN
bolt_hole_quantity8
flange_face_designPLAIN
face_to_face_distance6.750 INCHES IN
valve_operation_methodMANUAL
end_item_identificationNIMITZ CLASS CVN
NSN4820-01-435-1021
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: PI-NB2502 4IN · 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
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
FLANGE FACE DESIGN: PLAIN
•
STEM TYPE: NONRISING
•
CONNECTION TYPE: FLANGE, ROUND W/HOLES
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE DISK
TECHNICAL CHARACTERISTICS
INLET RELATIONSHIP WITH OUTLETIDENTICAL
FLANGE FACE DESIGNPLAIN
STEM TYPENONRISING
CONNECTION TYPEFLANGE, ROUND W/HOLES
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE DISK
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-288, COMP B FED SPEC SINGLE MATERIAL RESPONSE SEAT
VALVE SIZE4.000 INCHES IN
BONNET TYPEOUTSIDE SCREW-YOKE
SUBSTITUTES & CROSS-REFERENCES 2
PI-NB2502Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
PI-NB2502 4.00IReference 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 PI-NB2502 4IN?
PI-NB2502 4IN is a VALVE,GATE.
What parts can replace PI-NB2502 4IN?
There are 2 known substitutes for PI-NB2502 4IN: PI-NB2502, PI-NB2502 4.00I. Substitute compatibility should be verified for your specific system.
What is the NSN for PI-NB2502 4IN?
PI-NB2502 4IN is cataloged in the U.S. Government catalog under NSN 4820-01-435-1021. 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.