GENTEC® R53SL Series Single-Stage Tied Diaphragm Regulator consists of a specially designed link between the diaphragm and main valve. It is designed to prevent "creep" if contaminants should form on the valve seat. This feature improves regulator performance and extends the life of the diaphragm. Additionally, a high flow mesh filter is installed before gas enters the seat. It is attached onto the seat. The entire unit can be swapped out during maintenance of the regulator (seat / filter / nozzle). Debris prior to the seat will be caught by the filter, preventing debris from entering the regulator.