Ellcon National, Inc.

Robert Gayfer

Mark Michel

Thomas S Head

A railway car control valve comprises a brake pipe port, an auxiliary reservoir port, a main piston configured to compare air pressures at the brake pipe port and the auxiliary reservoir port, and a one-way check valve positioned intermediate the brake pipe port and the auxiliary reservoir port. The one way check valve comprises a body having a bore extending from its first end to its second end, an elongated insert configured to reduce the rate of air flow through the body, and a sleeve received on the insert's outer surface. The insert is received in the body bore. One of the insert and the sleeve is configured to move between a first position and a second position that either allows air to flow or prevents air from flowing, respectively.

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Greenville, SC, United States of America

Robert Gayfer