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PartsTable / COMPONENT / D1866 PIECE 4
D1866 PIECE 4 ✓ 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,VALVE,METALLIC is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STAINLESS STEEL MATERIAL PER ASTM-A296-CA40,HARDEN RC 25-30 FOR 4 INCH 150 PSI B.W. SWING CHECK VALVE 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 4820-01-090-9722, 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
D1866 PIECE 4
NSN: 4820-01-090-9722
FSC: 4820
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTAINLESS STEEL MATERIAL PER ASTM-A296-CA40,HARDEN RC 25-30 FOR 4 INCH 150 PSI B.W. SWING CHECK VALVE IN
NSN4820-01-090-9722
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D1866 PIECE 4 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STAINLESS STEEL MATERIAL PER ASTM-A296-CA40,HARDEN RC 25-30 FOR 4 INCH 150 PSI B.W. SWING CHECK VALVE IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTAINLESS STEEL MATERIAL PER ASTM-A296-CA40,HARDEN RC 25-30 FOR 4 INCH 150 PSI B.W. SWING CHECK VALVE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
B1486Interchangeable
interchangeable cross-reference
interchangeable
X2790Interchangeable
interchangeable cross-reference
interchangeable
701-050Interchangeable
interchangeable cross-reference
interchangeable
PC375Interchangeable
interchangeable cross-reference
interchangeable
D-1866 PIECE 13 3IN BInterchangeable
interchangeable cross-reference
interchangeable
D1866 PIECE 13Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D1866 PIECE 4?
D1866 PIECE 4 is a DISK,VALVE,METALLIC.
What parts can replace D1866 PIECE 4?
There are 14 known substitutes for D1866 PIECE 4: B1486, X2790, 701-050 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D1866 PIECE 4?
D1866 PIECE 4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-090-9722. 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