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Technical Data Sheet
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P10857A — RETAINER,DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

P10857A: RETAINER,DISK,VALVE.

The RETAINER,DISK,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-502-0510, 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
P10857A
NSN: 4820-01-502-0510
FSC: 4820 — Valves, Nonpowered
CAGE: 70667 — ATLAS VALVE CO (USA)
SPECIFICATIONS
Part NumberP10857A
NSN4820-01-502-0510
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: P10857A · 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
NAP-958 FIND NO.15Reference document
Same NSN cross-reference
Reference document — Secondary reference
NAP 958Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
NAP 958 CDS-1Reference 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 P10857A?
P10857A is a RETAINER,DISK,VALVE.
What parts can replace P10857A?
There are 3 known substitutes for P10857A: NAP-958 FIND NO.15, NAP 958, NAP 958 CDS-1. Substitute compatibility should be verified for your specific system.
What is the NSN for P10857A?
P10857A is cataloged in the U.S. Government catalog under NSN 4820-01-502-0510. This indicates validated use in U.S. government and defense supply chains.
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