Control valve maintenance - Import export

In contrast to other valve designs, only two diaphragm valve components come into contact with the operating media the diaphragm itself and the valve housing. The long service life, reliability, safety and resistance against aggressive and abrasive media, combined with the excellent control quality of the directly mounted digital positioner result in an ideal control valve with minimal maintenance effort and low operating costs. With its pneumatic actuator and proven Schubert & Salzer positioner, the diaphragm valve 7069 equipped with plastic housing is not only a true control valve alternative for applications in the fields of chemistry, cosmetics, environmental engineering and water treatment, it is also ideal for galvanising technology as well as for the food and beverage industry. A true all rounder.

The multiple water quantity control system in modular design that is available in several versions fulfils not less than three requirements at the same time. It combines the advantages of the conventional water distributors, the impulse cooling systems and the continuously operating temperature control units while eliminating the disadvantages of each of these systems. The temperature control system disposes of up to 128 individually adjustable circuits and is suitable for the processing of polyolefins and technical thermoplastic materials. In case of the basic execution (itd B) the requested flow rate is adjusted manually and is then monitored by a flow meter and presented digitally and graphically on the central display of the control unit. In the standard execution (itd R) the water quantity is individually set for each circuit at the central operating unit and - if necessary - is readjusted automatically via a water quantity regulation valve within adjustable limit values.

Brake force control valve for stepless regulation of the brake pressure.

The pneumatic sliding gate control valve type 8028 in reinforced GS3 design with integrated positioner and with an 80 mm diaphragm actuator is ideal for compact plant installations in process technology. In addition to the compact design, this valve is characterised by high control precision and a long service life. Digital positioner type 8049 Positioner type 8049 in explosionproof version Positioner with integrated process controller type 8049 IPC Metal bellows Limit switch Position feedback Pilot valve . . .

The hightemperature sliding gate control valve type 8024 in reinforced GS3 design with integrated positioner is suitable for a wide range of process applications up to 530°C. Media such as steam, liquids, gases, etc. can be precisely controlled even in the hightemperature range. Digital positioner type 8049 Pneumatic and electropneumatic positioner type 8047 Positioner with integrated process controller type 8049 IPC Positioner type 8047 and type 8049 also in explosionproof version Positioner with mounting acc. to NAMUR standard Metal bellows Limit switch Position feedback Manual override Pilot valve . . .

This series comprises valves with two connections that are operated by an electric motor. They are characterized by the fact that the valve stroke can be adjusted steplessly and held in place by a motor using a setpoint signal (420 mA or 010 V). This makes this series particularly suitable for precise dosing applications, as the servo motor reliably processes setpoint deviations of 1%.

Within the family of pressureregulating valves, a technical distinction is made between series of bypass valves, inline valves and threeway valves.

The electrical fine control valve makes it possible to adjust volume flows precisely via an input signal (4-20 mA) and to approach an exact spindle position. The valve can also be controlled by a 24V continuous voltage. Position feedback is implemented by a 4-20 mA output signal. With an additional adapter, the valve can also be connected via an RS-232 interface to a computer. The valves are available in 1/4" (10-200 l/h of water) and 1/2" (50-500 l/h of water).

- Whitworth pipe thread - Thread G2 for manual override - Chambered O-ring - Sealing: NBR - Material: brass nickel plated, Al black anodized - Allowable medium: air - Temperature range 14 to 158 °F (-10 to +70 °C) - Working pressure range 14,5 to 145 psi (1 to 10 bar) - Nominal flow rate measured when throttle is open at 87 psi (6 bar) and 14,5 psi (1 bar) pressure drop between inlet and exhaust