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Technical Data Sheet
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72803-0021 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

72803-0021: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include flow_control_device: DISK, valve_operation_method: AUTOMATIC. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-359-0550, 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
72803-0021
NSN: 4820-01-359-0550
FSC: 4820 — Valves, Nonpowered
CAGE: 62265 — VOLVO TRUCKS NORTH AMERICA, INC. DBA (FOREIGN PARENT IS VOLVO LASTVAGNAR AB, GOTEBORG, SWEDEN.) (USA)
SPECIFICATIONS
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
NSN4820-01-359-0550
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 72803-0021 · 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
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
VALVE OPERATION METHODAUTOMATIC
SUBSTITUTES & CROSS-REFERENCES 3
3945603Reference document
Same NSN cross-reference
Reference document — Secondary reference
72803-0009Reference document
Same NSN cross-reference
Reference document — Secondary reference
8073938Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 72803-0021?
72803-0021 is a VALVE,CHECK.
What parts can replace 72803-0021?
There are 3 known substitutes for 72803-0021: 3945603, 72803-0009, 8073938. Substitute compatibility should be verified for your specific system.
What is the NSN for 72803-0021?
72803-0021 is cataloged in the U.S. Government catalog under NSN 4820-01-359-0550. This indicates validated use in U.S. government and defense supply chains.
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