5/8" OD Carbide Disc

Tungsten carbide valve seat insert that the high pressure stem closes against inside Flow’s 60 psi bleed down valve. Its lapped faces create a metal to carbide seal that vents the 2.5 L attenuator. The 0.625 in outside diameter drops into the stainless seat carrier; the 0.125 in axial height preserves the valve’s spring preload.