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5399-021R 1IN — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

5399-021R 1IN: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: SOCKET WITH BRAZING RING (PIPE) ALL ENDS, special_features: AS MODIFIED BY CERTIFICATION DATA SHEET 5399-802-J-0002, operating_pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, maximum_operating_temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-506-5185, 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
5399-021R 1IN
NSN: 4820-01-506-5185
FSC: 4820 — Valves, Nonpowered
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleSOCKET WITH BRAZING RING (PIPE) ALL ENDS
special_featuresAS MODIFIED BY CERTIFICATION DATA SHEET 5399-802-J-0002
operating_pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
end_item_identificationAIRCRAFT CARRIER,CVN 76
media_for_which_designedAIR SINGLE RESPONSE
material_document_and_classificationASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
part_name_assigned_by_controlling_agencySWING CHECK VALVE
nominal_outside_diameter_tube_accommodated2.000 INCHES ALL ENDS IN
NSN4820-01-506-5185
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 5399-021R 1IN · 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
SUBSTITUTES & CROSS-REFERENCES 2
803-1385721 REV.RReference document
Same NSN cross-reference
Reference document — Drawing number reference only
5399021RReference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 5399-021R 1IN?
5399-021R 1IN is a VALVE,CHECK.
What parts can replace 5399-021R 1IN?
There are 2 known substitutes for 5399-021R 1IN: 803-1385721 REV.R, 5399021R. Substitute compatibility should be verified for your specific system.
What is the NSN for 5399-021R 1IN?
5399-021R 1IN is cataloged in the U.S. Government catalog under NSN 4820-01-506-5185. This indicates validated use in U.S. government and defense supply chains.
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