The specially formed diaphragm also permits sampling at subambient pressures. Standard bore size is 0.016 in. Optional bore sizes are 0.010 and 0.030 in. The valve is held together by a single screw to simplify maintenance. The diaphragm instantly adjusts the light path to match the operator's needs.
Color temperature remains constant even with a change in light output.
The dimmer can be used for precise voltage adjustments. Both the diaphragm and the dimmer are mounted on the faceplate. It can accommodate single or bifurcated fiber bundles. It can be assembled and disassembled quickly for simple maintenance. Pressure rating is 120 psi.