DP 23 is a SG Iron pilot operated pressure reducing valvesuitable for steam or compressed air.Available Sizes & Pipe Connections :15, 20, 25, 40 & 50 NB Screwed : BSPT NPT for 15, 20, 25NBFlanged : BS10 table FH for 40& 50NBLimiting Conditions :PMO - Maximum allowable Pressure : 17TMO - : Maximum allowable Temperature 232 C.Cold hydraulic test pressure : 34 bar g Spring range : 0.3 to 17 bar g