specification: R type, block type, pipe to pipe *Features:                                                                                                       1. bonnet lock pins prevent accidental loosening.                                        2. Free-swiveling ball end stem(metal seat, std.) assure bubble tight valve closure without seat galling. The special hardened ball set is ideal for both gas and liquid service.                                                                                 3. All stem packing is located below the stem threads prevent galling, corrosion and contamination by the process media.                                    4. The packing is adjustable with less possiblity of bonnet/body leaks.        5. Full back-seated bonnts prevent accidental stem remouval and blowout. Unique design minimizes emissions while offering easy access to the packing. 6. Max. pressure rating(metal seated), 6000psig at 200 oF(414bar at 93degree).                                                                                                7. Pressure rating at max. temp.: PTFE-4130 psig at 450 oF(284bar at 232degree) and Grafoil-1500psig at 1000 oF(103bar at 537degree)         8. The orifice size: 0.156 inch (4.0mm)