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V33-F4N-1-B — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

V33-F4N-1-B: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED INTERNAL PIPE ALL ENDS, special_features: SEALS MATL BUNA-N; CRACKING PRESSURE 1 PSI, valve_operation_method: AUTOMATIC, thread_series_designator: NPT ALL ENDS, part_name_assigned_by_controlling_agency: D-PRO CHECK VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-628-5131, 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
V33-F4N-1-B
NSN: 4820-01-628-5131
FSC: 4820 — Valves, Nonpowered
CAGE: 4M588 — BARBEE VALVE & SUPPLY INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED INTERNAL PIPE ALL ENDS
special_featuresSEALS MATL BUNA-N; CRACKING PRESSURE 1 PSI
valve_operation_methodAUTOMATIC
thread_series_designatorNPT ALL ENDS
part_name_assigned_by_controlling_agencyD-PRO CHECK VALVE
NSN4820-01-628-5131
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: V33-F4N-1-B · 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
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: SCREW-IN CARTRIDGE
•
MATERIAL: COPPER ALLOY BODY
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORSCREW-IN CARTRIDGE
SPECIAL FEATURESSEALS MATL BUNA-N; CRACKING PRESSURE 1 PSI
PART NAME ASSIGNED BY CONTROLLING AGENCYD-PRO CHECK VALVE
MATERIALCOPPER ALLOY BODY
THREAD SERIES DESIGNATORNPT ALL ENDS
VALVE OPERATION METHODAUTOMATIC
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

No substitute or cross-reference records for this part.

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 V33-F4N-1-B?
V33-F4N-1-B is a VALVE,CHECK.
What is the NSN for V33-F4N-1-B?
V33-F4N-1-B is cataloged in the U.S. Government catalog under NSN 4820-01-628-5131. 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.