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B1620A-4IN — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

B1620A-4IN: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, valve_size: 4.000 INCHES IN, flange_shape: ROUND ALL ENDS, connection_type: FLANGE ALL ENDS, style_designator: STRAIGHT THRU FLANGED ENDS, mounting_position: HORIZONTAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-421-4710, 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
B1620A-4IN
NSN: 4820-01-421-4710
FSC: 4820 — Valves, Nonpowered
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
valve_size4.000 INCHES IN
flange_shapeROUND ALL ENDS
connection_typeFLANGE ALL ENDS
style_designatorSTRAIGHT THRU FLANGED ENDS
mounting_positionHORIZONTAL
nominal_thickness0.688 INCHES ALL ENDS IN
flange_face_designPLAIN ALL ENDS
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
face_to_face_distance11.250 INCHES IN
valve_operation_methodAUTOMATIC
NSN4820-01-421-4710
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: B1620A-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
•
FLOW CONTROL DEVICE: DISK
•
FLANGE SHAPE: ROUND ALL ENDS
•
FLANGE FACE DESIGN: PLAIN ALL ENDS
•
MOUNTING POSITION: HORIZONTAL
•
CONNECTION TYPE: FLANGE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
OPERATING PRESSURE: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
VALVE SIZE: 4.000 INCHES IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FLANGE SHAPEROUND ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
MOUNTING POSITIONHORIZONTAL
CONNECTION TYPEFLANGE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VALVE SIZE4.000 INCHES IN
NOMINAL OUTSIDE DIAMETER9.000 INCHES ALL ENDS IN
FACE TO FACE DISTANCE11.250 INCHES IN
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B1620A-4IN?
B1620A-4IN is a VALVE,CHECK.
What is the NSN for B1620A-4IN?
B1620A-4IN is cataloged in the U.S. Government catalog under NSN 4820-01-421-4710. 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.