PartsTable
Technical Data Sheet

B-6C-1/3 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B-6C-1/3: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, valve_size: 0.375 INCHES IN, style_designator: STRAIGHT THRU, operating_pressure: 2200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, flow_control_device: POPPET, maximum_operating_temp: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-645-1658, 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
B-6C-1/3
NSN: 4820-01-645-1658
FSC: 4820 — Valves, Nonpowered
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
valve_size0.375 INCHES IN
style_designatorSTRAIGHT THRU
operating_pressure2200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_devicePOPPET
maximum_operating_temp250.0 FAHRENHEIT SINGLE RESPONSE DEGF
valve_operation_methodMANUAL
part_name_assigned_by_controlling_agencyPOPPET CHECK VALVE
NSN4820-01-645-1658
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B-6C-1/3 · 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: POPPET
•
STYLE DESIGNATOR: STRAIGHT THRU
•
OPERATING PRESSURE: 2200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
VALVE SIZE: 0.375 INCHES IN
•
MAXIMUM OPERATING TEMP: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEPOPPET
STYLE DESIGNATORSTRAIGHT THRU
OPERATING PRESSURE2200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VALVE SIZE0.375 INCHES IN
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIAL FEATURESCONNECTION TYPE: SWAGELOK TUBE FITTING; TEMPPRESSCODE: 2-8CB; CRACKING PRESSURE: 1/3 PSI (0.03 BAR, 0.003 MPA); O-RINGS: BUNA N; SURFACE FINISH: STANDARD; UNSPSC (SWG01): 40141641; LUBRICANT: DOW VACUUM
PART NAME ASSIGNED BY CONTROLLING AGENCYPOPPET CHECK VALVE
MATERIALCOPPER ALLOY OVERALL
VALVE OPERATION METHODMANUAL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B-6C-1/3?
B-6C-1/3 is a VALVE,CHECK.
What is the NSN for B-6C-1/3?
B-6C-1/3 is cataloged in the U.S. Government catalog under NSN 4820-01-645-1658. 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.