PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 81653
81653 ✓ 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_angle: 15.0 DEGREES NOMINAL, overall_length: 5.750 INCHES NOMINAL IN, style_designator: OFFSET, features_provided: FULL POLISH, surface_treatment: CHROMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-678-0287, 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
81653
NSN: 4820-00-678-0287
FSC: 4820
CAGE: 24658 — GENERAL REGULATOR CORP. DBA ACCUDRIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_angle15.0 DEGREES NOMINAL
overall_length5.750 INCHES NOMINAL IN
style_designatorOFFSET
features_providedFULL POLISH
surface_treatmentCHROMIUM OVERALL
wrenching_surface_size0.3438 INCHES NOMINAL BOTH ENDS IN
wrenching_surface_shapeOVAL FIRST END INTERNAL
wrenching_end_offset_angle15.0 DEGREES NOMINAL
nondefinitive_spec/std_data2 TYPE AND 4 CLASS AND C STYLE
specification/standard_data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN4820-00-678-0287
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81653 · 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
•
OUTSIDE DIAMETER: 2.250 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 1.812 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.005 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 12
•
STYLE DESIGNATOR: FLAT
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER2.250 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
HOLE DIAMETER0.188 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER1.812 INCHES NOMINAL IN
MATERIAL THICKNESS0.005 INCHES NOMINAL IN
BOLT HOLE QUANTITY12
STYLE DESIGNATORFLAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AS954 TY2CL4STCInterchangeable
interchangeable cross-reference
interchangeable
AS954Interchangeable
interchangeable cross-reference
interchangeable
81653Interchangeable
interchangeable cross-reference
interchangeable
1842-12Interchangeable
Same NIIN cross-reference
interchangeable
1891-12Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 81653?
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 81653?
81653 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 81653?
There are 5 known substitutes for 81653: AS954 TY2CL4STC, AS954, 81653 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81653?
81653 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-678-0287. This indicates validated use in U.S. government and defense supply chains.
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 — 81653

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