Ключевые слова: automation valve, ball valve, batch control temp, bolt, butterfly valve, cap, check valve, chemical, cock, coupling screw, equipment, flow, frp, gas, gas industrial, gate valve, gear, globe valve, grove, heavy hex, hex, industrial, industry, lining, machine, main hole, manual valve, needle, nut, nylon insert lock, pipe, plug, poppet valve, pressure measuring, signel generator, solution, spool valve, steam trap, steel, tank, type, valve, valveless, wing,