Needle valve with handle locking facility suitable for locking handle with allen screw for constant flow outputend connections tube od / male pipe threads/ female pipe threadstube od size from 1/16 od to 2 od / from 3mm od to 48mm od from 3mm od to 48mm od metric pipe thread dimensions ranging from 1/8 inch to 2 inches male / female npt taper threadstest pressure Pressure rating of 3000 psi 6000 psi or 10000 psigland packing ptfe or graphoil for high temperature servicemoc ss/ cs/ as/ brass/ high nickel alloys etc. Needle valve with any combination of inlet/ outlet available on request