RSF 50-0.3M RSF 50-0.3M/M20 RSF 50-0.3M/NPT RSF 50-0.3M/NPT W/LN RSF 50-0.4M RSF 50-0.5M/NPT RSF 50-0.6M/S892 RSF 50-16-A/2M RSF 50-16-A/4M RSF 50-1M