Snubbers eliminate needle fluctuations from pressure pulsations-extends gauge life. Gauge connection is 1/4 NPT); process connection is 1/4 NPT). use optional bushings to adapt snubbers or gauges. Fixed snubbers feature an element made of micro-sized stainless steel pieces, sintered to a porosity of 10 microns for use with a specified fluid (see table below). adjustable pressure snubbers can be used with a variety of fluids and conditions; feature a tunable Choke Valve. Warning: this product is not approved or intended for, and should not be used for medical, clinical, surgical or other patient oriented applications.