... /4" Small orders accepted Forged brass straight radiator valve with lockshield, 1, Size:3/8", 1/2", 3 ... step:1, Smelting the brass bars and making the hot forging2, Machining and CNC processing3, Assembling4, Pressure test ... Experienced technical staff3, All products are approved by CE and ISO4, Marking the customer's brand on the ... accepted Brass radiator valve, temperature control valve (with CE)