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The Bard 8603-038BX is an OEM 1 inch female pipe thread (FPT) 24V brass ball valve used to positively open or shut off water or compatible fluid flow in Bard HVAC equipment, commonly where a control signal needs to actuate a valve as part of system operation or service isolation. Built for dependable fit and performance on Bard units, this valve helps restore proper flow control when an existing valve sticks, leaks, or fails to respond, and it is a direct replacement for Bard part 8603-038 when applicable.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.