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3P4218 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

3P4218: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, valve_size: 2.750 INCHES IN, flange_shape: OVAL WITH HOLES SECOND END, nominal_width: 2.750 INCHES FIRST END IN, nominal_length: 2.906 INCHES SECOND END IN, connection_type: FLANGE SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-018-1718, 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
3P4218
NSN: 4820-01-018-1718
FSC: 4820 — Valves, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
valve_size2.750 INCHES IN
flange_shapeOVAL WITH HOLES SECOND END
nominal_width2.750 INCHES FIRST END IN
nominal_length2.906 INCHES SECOND END IN
connection_typeFLANGE SECOND END
style_designatorANGLE FLANGED ENDS
mounting_positionHORIZONTAL OR VERTICAL
nominal_thickness2.000 INCHES FIRST END IN
bolt_hole_quantity4 FIRST END
flange_face_designPLAIN SECOND END
disk_loading_methodSPRING
NSN4820-01-018-1718
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3P4218 · 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: OVAL WITH HOLES SECOND END
•
FLANGE FACE DESIGN: PLAIN FIRST END
•
NOMINAL LENGTH: 2.906 INCHES SECOND END IN
•
BOLT CIRCLE NOMINAL DIAMETER: 2.125 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FLANGE SHAPEOVAL WITH HOLES SECOND END
FLANGE SHAPERECTANGULAR FIRST END
FLANGE FACE DESIGNPLAIN FIRST END
FLANGE FACE DESIGNPLAIN SECOND END
NOMINAL LENGTH2.906 INCHES SECOND END IN
NOMINAL LENGTH2.937 INCHES FIRST END IN
BOLT CIRCLE NOMINAL DIAMETER2.125 INCHES SECOND END IN
MOUNTING POSITIONHORIZONTAL OR VERTICAL
CONNECTION TYPEFLANGE SECOND END
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 3P4218?
3P4218 is a VALVE,CHECK.
What is the NSN for 3P4218?
3P4218 is cataloged in the U.S. Government catalog under NSN 4820-01-018-1718. 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.