Allows operating a single clamp, or group of clamps, at a lower pressure than the rest of the fixture. Can be used to finely adjust the clamping force of selected components while keeping others at full pressure. Great new design can be used on pallet fixtures disconnected from a power source, since no return line is needed for operation. Zero-leakage poppet design. The version shown here is used for in-line mounting with standard fittings and exposed fluid lines. Also available in a manifold-mounted version for mounting on flat surfaces, and a threaded-body version for cartridge-type manifold mounting.