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PartsTable / COMPONENT / A8850
A8850 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The DISK AND SEAT SET,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1075 OVERALL, hole_diameter: 1.575 INCHES NOMINAL IN, overall_height: 0.140 INCHES NOMINAL IN, surface_finish: 100.0 MICROINCHES ALL SURFACES, outside_diameter: 2.028 INCHES NOMINAL IN, material_thickness: 0.022 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-229-1673, 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
A8850
NSN: 4820-00-229-1673
FSC: 4820
CAGE: R1120 — SATAIR A/S (DNK)
SPECIFICATIONS
materialSTEEL COMP 1075 OVERALL
hole_diameter1.575 INCHES NOMINAL IN
overall_height0.140 INCHES NOMINAL IN
surface_finish100.0 MICROINCHES ALL SURFACES
outside_diameter2.028 INCHES NOMINAL IN
material_thickness0.022 INCHES NOMINAL IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4820-00-229-1673
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A8850 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
705328Interchangeable
interchangeable cross-reference
interchangeable
0051438-0Interchangeable
interchangeable cross-reference
interchangeable
4595Interchangeable
interchangeable cross-reference
interchangeable
A8850Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A8850?
A8850 is a DISK AND SEAT SET,VALVE.
What parts can replace A8850?
There are 4 known substitutes for A8850: 705328, 0051438-0, 4595 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A8850?
A8850 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-229-1673. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026