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Detroit High Pressure Terminal Checks

Dan Smoley wrote:

To compliment my line of 1.5 inch scale Nathan DV series mechanical lubricators I'm now offering Detroit High Pressure Terminal Checks. These little fellas are found all over late steam era equipment and surely there's a more than a few on a Berkshire. They were used to ensure one way flow of constant pressure lubrication to valves, glands, shafts, flexible steam joints, pivots and bearings. These are dummy units although they could be through-drilled for actual oil lines.