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9889K39 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

9889K39: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (HOSE) ALL ENDS, style_designator: ANGLE, thread_direction: RIGHT-HAND ALL ENDS, nominal_thread_size: 0.500 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-573-0523, 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
9889K39
NSN: 4820-01-573-0523
FSC: 4820 — Valves, Nonpowered
CAGE: 07BY4 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (HOSE) ALL ENDS
style_designatorANGLE
thread_directionRIGHT-HAND ALL ENDS
nominal_thread_size0.500 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
end_item_identification8340-01-558-8706 TENT
media_for_which_designedAIR SINGLE RESPONSE
thread_series_designatorNPT ALL ENDS
NSN4820-01-573-0523
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 9889K39 · 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
•
CONNECTION STYLE: PLAIN (HOSE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: ANGLE
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
NOMINAL THREAD SIZE: 0.500 INCHES ALL ENDS IN
•
MEDIA FOR WHICH DESIGNED: AIR SINGLE RESPONSE
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (HOSE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
END ITEM IDENTIFICATION8340-01-558-8706 TENT
MATERIALCOPPER ALLOY BODY
THREAD SERIES DESIGNATORNPT ALL ENDS
VALVE OPERATION METHODAUTOMATIC
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: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9889K39?
9889K39 is a VALVE,SAFETY RELIEF.
What is the NSN for 9889K39?
9889K39 is cataloged in the U.S. Government catalog under NSN 4820-01-573-0523. 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.