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533B1M89 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

533B1M89: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, special_features: ZERO-LEAK; TAMPER PROOF ADJUSTMENT; O-RING MATERIAL NEOPRENE; TEMPERATURE RANGE -40 TO +250 DEGREES F, style_designator: STRAIGHT THRU. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-477-5212, 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
533B1M89
NSN: 4820-01-477-5212
FSC: 4820 — Valves, Nonpowered
CAGE: 91816 — CIRCOR AEROSPACE, INC. DBA CIRCOR AEROSPACE INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
special_featuresZERO-LEAK; TAMPER PROOF ADJUSTMENT; O-RING MATERIAL NEOPRENE; TEMPERATURE RANGE -40 TO +250 DEGREES F
style_designatorSTRAIGHT THRU
NSN4820-01-477-5212
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 533B1M89 · 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
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU
SPECIAL FEATURESZERO-LEAK; TAMPER PROOF ADJUSTMENT; O-RING MATERIAL NEOPRENE; TEMPERATURE RANGE -40 TO +250 DEGREES F
MATERIALCOPPER ALLOY BODY
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 1
444-11065-445Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 533B1M89?
533B1M89 is a VALVE,SAFETY RELIEF.
What parts can replace 533B1M89?
There is 1 known substitute for 533B1M89: 444-11065-445. Substitute compatibility should be verified for your specific system.
What is the NSN for 533B1M89?
533B1M89 is cataloged in the U.S. Government catalog under NSN 4820-01-477-5212. 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.