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CG81189 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

CG81189: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL UNS J91150 SEAT, bonnet_type: OUTSIDE SCREW-YOKE, connection_type: BUTT WELD PIPE ALL ENDS, connection_style: BEVELED (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, features_provided: BONNET PACKING. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-146-9956, 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
CG81189
NSN: 4820-01-146-9956
NIINs: 011469956, 011471405, 011471435
FSC: 4820 — Valves, Nonpowered
CAGE: 79342 — WILLIAM E WILLIAMS VALVE CORP (USA)
SPECIFICATIONS
materialSTEEL UNS J91150 SEAT
bonnet_typeOUTSIDE SCREW-YOKE
connection_typeBUTT WELD PIPE ALL ENDS
connection_styleBEVELED (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
features_providedBONNET PACKING
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
flow_control_deviceDISK
valve_operation_methodMANUAL
bonnet_attachment_methodBOLTED
nominal_pipe_size_accommodated2.500 INCHES ALL ENDS IN
material_document_and_classificationASTM A217 GRADE CA15 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
NSN4820-01-146-9956
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CG81189 · 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
•
FLOW CONTROL DEVICE: DISK
•
NOMINAL PIPE SIZE ACCOMMODATED: 2.500 INCHES ALL ENDS IN
•
CONNECTION STYLE: BEVELED (PIPE) ALL ENDS
•
CONNECTION TYPE: BUTT WELD PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A351 GRADE CF3M ASSN STD SINGLE MATERIAL RESPONSE BODY
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
NOMINAL PIPE SIZE ACCOMMODATED2.500 INCHES ALL ENDS IN
CONNECTION STYLEBEVELED (PIPE) ALL ENDS
CONNECTION TYPEBUTT WELD PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A351 GRADE CF3M ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A217 GRADE CA15 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A217 GRADE CA15 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A217 GRADE CA15 ASSN STD SINGLE MATERIAL RESPONSE STEM
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CG81189?
CG81189 is a DISK,VALVE.
What is the NSN for CG81189?
CG81189 is cataloged in the U.S. Government catalog under NSN 4820-01-146-9956. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.