The Ingersoll Rand 38006649 valve port is used on their older TZ style heatless desiccant dryers. This valve sits on top of the main distribution block.
This valve was used on a wide array of models in their TZ series. Please contact us with your model and serial number for confirmation this will work with your dryer.
Part #: 32301434
Part #: 32301426
Part #: 32307738
Part #: 32304610