Kit A includes Model YR AutoFlow regulator, Model UB ball valve, Model YC strainer with ball valve and two Model S2/S3 hose assemblies. Model YR factory set to automatically limit the flow to within 5% of the specified amount over 95% of the control range. The flow cartridge is removable from the valve body to provide access for regulator changeout, inspection and cleaning without breaking the main piping. Pressure / Temperature ports are standard. Model UB is a shut-off valve with large diameter plated ball and Teflon seats. Stem is blowout proof with EPDM O-ring and PTFE packing with packing nut. Ball valve end available thread or sweat – please specify. Model YC is a combination ball valve, y-strainer and union with seven (7) accessory port locations. 20 mesh stainless steel strainer is removable from the valve body for inspection and cleaning without breaking the main piping. H2/H3 hose assembly has a braided stainless steel outer band with CPE/EPDM inner tube and brass or steel fittings.