Fabricated construction Minimizing of heat loss of process temperature due to optimized thermal insulation of body, bonnet (uncooled) and paddle Thermal insulation comprising various materials Optimization of thermal insulation, allowing for water cooling of only the body seats and paddle Special design cooling water passages provide optimum flow Sealing in both directions, floating paddle design Valve actuation in accordance with customers requirement (man./electr./hydr./pneum.) Pressure rating up to PN 6 Service temperatures up to 1650 °C (3000 °F) Nominal diameters up to 3000 mm (120 inch) Other sizes or operating conditions on request
Valve approved to „Man-safe“ standards (goggle valve - openwork structure) The design provides 100% shut-off of media flow Total separation of the gas main in the closed position, thus ensuring no passage of the media from the upstream to the downstream gas main, i.e. „Man-Safe“ isolation Uniformly arranged clamping/unclamping hydraulic rams on one side of the valve body Valve body with one movable and one fixed body sealing seat Goggle plate seating/clamping is of mechanical pressure effected by the spring package within the hydraulic rams. Opening/ unclamping is effected by hydraulic pressure onto the rams Dual circuit hydraulic systems available Open structure or totally enclosed design Venting to atmosphere of totally enclosed type in closed position Valve actuation in accordance with customers requirements (electr./hydr./pneum./man.) Very low maintenance requirement Pressure rating up to PN 6 Operating temperatures up to 1100 °C (2000 °F) Nominal diameters up to 5000 mm (200 inch) Other sizes or operating conditions on request
Fabricated construction In the initial stage of opening and final stage of closing, the disc moves parallel to the body seat providing a friction-free motion Various seat arrangements A special lever mechanism connects to, and applies pressure on the centre of the disc The shaft is arranged close to the valve centreline Operating lever and guide levers are of nearly the same length Compact design Materials according to operating conditions Valve actuation in accordance with customers requirements (man./electr./hydr./pneum.) Pressure rating up to PN 10 Operating temperatures up to 600 °C (1100 °F) Nominal diameters up to 4000 mm (160 inch) Other sizes or operating conditions on request
Z&J Technologies tradition as a successful enterprise goes back well over 100 years. Since the day of its foundation, the company has been producing valves for virtually every field of industrial application, mainly to customer specifications. An increasing specialisation in products for the iron and steel industry, the chemical and petrochemical industry and the glass industry has marked the company`s expansion over the last few decades. Here are a few milestones in the development of the enterprise which is now operating on a global scale.