Embodiments of the invention include a capping layer of alloy material formed over a copper-containing layer, the alloy configured to prevent diffusion of copper through the capping layer. The at least one clock spring is configured as a closing spring of the spring operated actuator. The cutting member remains stationary as long as the second given pressure is greater than the first given pressure. The present invention further includes a plurality of baffles secured within the internal bore. A compartmented hopper is fixed to the vibratory tray and controllably feeds catalyst pellets into respective catalyst transfer troughs.