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Technical Data Sheet
PartsTable / COMPONENT / 42256-B
42256-B ✓ 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 is a the manufacturer industrial component. Key specifications include color: UNABLE TO DECODE, material: PLASTIC PHENOLIC, power_source: EXTERNAL, movement_type: MOVING COIL, PERMANENT MAGNET, overall_width: 1.760 INCHES NOMINAL IN, pointer_color: BLACK SINGLE INDICATOR SINGLE RANGE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-010-1660, 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
42256-B
NSN: 4820-00-010-1660
FSC: 4820
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
colorUNABLE TO DECODE
materialPLASTIC PHENOLIC
power_sourceEXTERNAL
movement_typeMOVING COIL, PERMANENT MAGNET
overall_width1.760 INCHES NOMINAL IN
pointer_colorBLACK SINGLE INDICATOR SINGLE RANGE
indicator_typeDIAL W/POINTER
overall_height1.760 INCHES NOMINAL IN
overall_length1.830 INCHES NOMINAL IN
style_designatorRECTANGULAR FLUSH MTG
features_providedMAGNETIC SHIELD AND ZERO ADJUSTER
measurement_range+0.0 TO 5.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE
NSN4820-00-010-1660
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 42256-B · 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 6
501555Interchangeable
interchangeable cross-reference
interchangeable
416673-1Interchangeable
interchangeable cross-reference
interchangeable
61-1731Interchangeable
interchangeable cross-reference
interchangeable
1212-2434Interchangeable
interchangeable cross-reference
interchangeable
02434Interchangeable
interchangeable cross-reference
interchangeable
2353049-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 42256-B?
42256-B is a DISK,VALVE.
What parts can replace 42256-B?
There are 6 known substitutes for 42256-B: 501555, 416673-1, 61-1731 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42256-B?
42256-B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-010-1660. 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