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576E577 PIECE 1 — DIAPHRAGM,ACTUATOR VALVE,SPECIAL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

576E577 PIECE 1: DIAPHRAGM,ACTUATOR VALVE,SPECIAL.

DIAPHRAGM,ACTUATOR VALVE,SPECIAL. Key specifications include style_designator: SPECIAL SHAPED, media_for_which_designed: STEAM. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-237-7112, 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
576E577 PIECE 1
NSN: 4820-01-237-7112
FSC: 4820 — Valves, Nonpowered
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
style_designatorSPECIAL SHAPED
media_for_which_designedSTEAM
NSN4820-01-237-7112
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 576E577 PIECE 1 · 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: SPECIAL SHAPED
•
MEDIA FOR WHICH DESIGNED: STEAM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPECIAL SHAPED
MEDIA FOR WHICH DESIGNEDSTEAM
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 2
575E408Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
575E408 PIECE 8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 576E577 PIECE 1?
576E577 PIECE 1 is a DIAPHRAGM,ACTUATOR VALVE,SPECIAL.
What parts can replace 576E577 PIECE 1?
There are 2 known substitutes for 576E577 PIECE 1: 575E408, 575E408 PIECE 8. Substitute compatibility should be verified for your specific system.
What is the NSN for 576E577 PIECE 1?
576E577 PIECE 1 is cataloged in the U.S. Government catalog under NSN 4820-01-237-7112. 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.