PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 81640
81640 ✓ 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 MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: RUBBER, body_width: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, body_height: 0.120 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN, body_length: 0.745 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN, hole_diameter: 0.188 INCHES NOMINAL IN, outside_diameter: 2.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-888-3305, 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
81640
NSN: 4820-00-888-3305
FSC: 4820
CAGE: 24658 — GENERAL REGULATOR CORP. DBA ACCUDRIV (USA)
SPECIFICATIONS
materialRUBBER
body_width0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
body_height0.120 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
body_length0.745 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
hole_diameter0.188 INCHES NOMINAL IN
outside_diameter2.250 INCHES NOMINAL IN
style_designatorFLAT
features_providedW/DECODED OUTPUT AND HIGH SPEED AND W/ENABLE AND HERMETICALLY SEALED
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
bolt_hole_quantity12
inclosure_materialCERAMIC
material_thickness0.007 INCHES NOMINAL IN
NSN4820-00-888-3305
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81640 · 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
•
MATERIAL THICKNESS: 0.007 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT
•
BOLT HOLE QUANTITY: 12
•
MATERIAL: RUBBER
•
OUTSIDE DIAMETER: 2.250 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 1.812 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.007 INCHES NOMINAL IN
STYLE DESIGNATORFLAT
BOLT HOLE QUANTITY12
MATERIALRUBBER
OUTSIDE DIAMETER2.250 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER1.812 INCHES NOMINAL IN
HOLE DIAMETER0.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
CD4017ADInterchangeable
interchangeable cross-reference
interchangeable
932364-1BInterchangeable
interchangeable cross-reference
interchangeable
81640Interchangeable
interchangeable cross-reference
interchangeable
26041013Interchangeable
interchangeable cross-reference
interchangeable
7837635Interchangeable
interchangeable cross-reference
interchangeable
18799Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 81640?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 81640?
81640 is a MICROCIRCUIT,DIGITAL.
What parts can replace 81640?
There are 7 known substitutes for 81640: CD4017AD, 932364-1B, 81640 and 4 more. Substitute compatibility should be verified for your specific system.
Is 81640 still available?
81640 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 81640

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026