Low flow valves or needle valves are always used wherever minimal flow rates or high pressures have to be controlled with particular precision or securely shut off. With the type 7042, Schubert & Salzer now developed a low flow valve that not only offers minimal Kv-values of 0.0027 to 1.7 and a nominal pressure of PN320, but also impresses with state-of-the-art field integration.
Versatile positioner with smart electronics
The low flow valve type 7042 shows its full potential together with the optionally integrated positioner type 8049. In addition to an explosion-protected and FM version, it can also be equipped with an IO-Link connection or IIoT module (Industrial Internet of Things). The low flow valve thus supplies extensive status data, which can significantly facilitate not only predictive maintenance, but also error analysis and commissioning. With IO-link, a single cable with an M12 plug bundles the positioning signal, position feedback, data transmission and even the power supply. The continuous monitoring of the status data allows even the slightest irregularities in the control behaviour to be detected. The evaluation of the data facilitates the planning of predictive maintenance and thus increases process reliability and plant availability.
Maintenance-friendly with long service lives
A further advantage of the type 7042 is the top-mounted installation of the integrated positioner.
The design enables the fast and uncomplicated replacement of the control unit and is thus particularly maintenance-friendly.
The new positioner is automatically configured with the parameters of the predecessor via IO-Link. It is immediately ready to operate following a brief self-calibration routine.
The low flow valve type 7042 has a valve body made of stainless steel barstock material, hardened valve spindles and a metallically sealing, replaceable seat seal made of hardened stainless steel or carbide to reach maximum reliability and a long service life even in high-pressure applications.
Thanks to a special high-pressure packing, high leak-tightness is achieved even with a high switching frequency – including in hydrogen applications.
The precision of the design and control accuracy in the implementation enable the low flow valve type 7042 in conjunction with the versatile positioner type 8049 from Schubert & Salzer to be used in an extensive range of industrial applications.
From June 10th to 14th, you can experience the low flow valve type 7042 live at the ACHEMA in Frankfurt, Germany (Booth E45, Hall 11.1).
