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IB643 SIZE 1/2 IN — Technical Data Sheet

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— · 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 TAPE,SOUND RECORDING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: COPPER ALLOY 836 DISK, stem_type: RISING, valve_size: 0.500 INCHES IN, bonnet_type: INSIDE SCREW, pressure_class: ERR-060, connection_type: THREADED INTERNAL PIPE. This part is cataloged in the Federal Logistics Information System under NSN 4820-00-843-2779, 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
IB643 SIZE 1/2 IN
NSN: 4820-00-843-2779
FSC: 4820
CAGE: 14448 — HAMMOND VALVE CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY 836 DISK
stem_typeRISING
valve_size0.500 INCHES IN
bonnet_typeINSIDE SCREW
pressure_classERR-060
connection_typeTHREADED INTERNAL PIPE
features_providedBONNET PACKING
nominal_thread_size0.500 INCHES IN
valve_operation_methodMANUAL
bonnet_attachment_methodTHREADED
thread_series_designatorNPT
operating_pressure_and_type125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
NSN4820-00-843-2779
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: IB643 SIZE 1/2 IN · 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
•
INLET RELATIONSHIP WITH OUTLET: IDENTICAL
•
STEM TYPE: RISING
•
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED: 353.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMCU0836 ASSN STD SINGLE MATERIAL RESPONSE BODY
•
OPERATING PRESSURE AND TYPE: 125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
•
THREAD SERIES DESIGNATOR: NPT
•
MATERIAL: COPPER ALLOY 836 BODY
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS
INLET RELATIONSHIP WITH OUTLETIDENTICAL
STEM TYPERISING
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED353.0 FAHRENHEIT STEAM AND 150.0 FAHRENHEIT WATER-OIL-GAS DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONASTMCU0836 ASSN STD SINGLE MATERIAL RESPONSE BODY
OPERATING PRESSURE AND TYPE125.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 200.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
THREAD SERIES DESIGNATORNPT
MATERIALCOPPER ALLOY 836 BODY
MATERIALCOPPER ALLOY 836 DISK
MATERIAL DOCUMENT AND CLASSIFICATIONASTMCU0836 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIALCOPPER ALLOY 836 SEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
42366InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
F910InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
94289InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
705-273111CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
030-0018InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
44-012InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is IB643 SIZE 1/2 IN?
IB643 SIZE 1/2 IN is a TAPE,SOUND RECORDING.
What parts can replace IB643 SIZE 1/2 IN?
There are 29 known substitutes for IB643 SIZE 1/2 IN: 42366, F910, 94289 and 26 more. Substitute compatibility should be verified for your specific system.
Is IB643 SIZE 1/2 IN still available?
IB643 SIZE 1/2 IN is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026