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S558 — MANIFOLD,HYDRAULIC SYSTEM ACCESS

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

S558: MANIFOLD,HYDRAULIC SYSTEM ACCESS.

MANIFOLD,HYDRAULIC SYSTEM ACCESS. This part is cataloged in the U.S. Government catalog under NSN 4820-00-217-2747, 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
S558
NSN: 4820-00-217-2747
NIINs: 002172747, 012559913
FSC: 4820 — Valves, Nonpowered
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)
SPECIFICATIONS
Part NumberS558
NSN4820-00-217-2747
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: S558 · 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 3
2900-142PC4-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
3763APC4-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
2976-70PC4-5Reference 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 S558?
S558 is a MANIFOLD,HYDRAULIC SYSTEM ACCESS.
What parts can replace S558?
There are 3 known substitutes for S558: 2900-142PC4-5, 3763APC4-5, 2976-70PC4-5. Substitute compatibility should be verified for your specific system.
What is the NSN for S558?
S558 is cataloged in the U.S. Government catalog under NSN 4820-00-217-2747. This indicates validated use in U.S. government and defense supply chains.
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