This series can be used with regulator, and applies to scout the gas flow for laboratory or some gas welding places. Body is made of brass and stem is made of stainless steel.

Type	Served gas	Max flow	Inlet pressure	Inlet thread	Outlet thread
LZ-1	Ar, CO2	1LPM	0.35MPa	1/4NPT	M16X1.5
LZ-2	Ar, CO2	25LPM	0.35MPa	1/4NPT	M16X1.5