10 mm Needle Mono-flange
HT/HP - Heavy Duty
Screwed bonnet option, 10mm bore mono-flange with bolt on kidney adaptor supplied direct to the Shell Malampaya project (2000).
Unlike the standard MF series mono-flange double block and bleed valve, this valve uses the large HD (heavy duty) head unit with all metal seating and metal to metal body to bonnet connection. The additional feature of an integral instrument connection is that it lowers dead volume, space wastage and potential leak paths even further.
Even though it is the heavy duty version of the MF mono-flange range it is still significantly lighter and more compact than one pipe-line ball valve. Furthermore no piping supports are necessary.