Velvac 035036 Dummy Coupling Yellow Steel Zinc Plated

Dummy Coupling for Hydraulic Systems

The Velvac 035036 is a steel dummy coupling with a yellow zinc-plated finish designed to protect hydraulic ports from contamination. It serves maintenance crews and equipment operators who need to seal open connections on mobile machinery. An 8 1/2 inch chain secures the coupling to the equipment during use.

Practical Limits of Threaded Port Protection

This coupling fits the specific port thread for which it was machined and cannot seal mismatched thread forms or sizes. The zinc plating resists atmospheric corrosion but is not rated for continuous immersion in caustic fluids. The attached chain limits loss but does not prevent the coupling from vibrating loose under extreme shock.

Capacity and Headroom for Port Sealing

The 6 1/2 inch overall length provides sufficient engagement depth for standard hydraulic port cavities. It comfortably handles the pressure retention required for stored implements and seasonal equipment. It runs out when a port requires a live flow-through connection or a pressure-rated test plug rather than a simple blanking cover.