stainless steel valve, valve manufacture, stainless steel butterfly valve Stainless Steel 304 stainless steel valve, valve manufacture, stainless steel butterfly valve1.Handle with lockable device 2.Standards: ISO, DIN, ... ,NBRConnectionWelding, clamp, thread and flangeHandle Manual, 2/3/4-position pulling handle, multi-position plastic/stainless steel handle,12 position gear handle.(can ...