New control valves for very small flows and very high pressures

(Copyright: Schubert & Salzer Control Systems)

Schubert & Salzer Control Systems expands its microvalves for demanding high-pressure applications with new variants. Through different actuator and connection designs, solutions for a wide range of applications can now be offered. Versions for use in high-temperature ranges up to 530 °C are also now available.

With three new microvalves, Schubert & Salzer Control Systems has significantly expanded its portfolio for controlling and shutting off at high pressures as well as for very small flow rates of liquid or gaseous media. In addition to the pneumatically operated type 7042 with integrated position controller, there are now two new variants with electric drive – type 7242 and 7342 – as well as the manually operated type 7045. All four microvalve types are available with threaded connections according to ISO and ANSI standards, as well as standardized socket-weld connections. Especially the welded socket weld connection offers a compact, reliable, and leak-free connection solution for applications with very high pressures.

Regardless of the type of drive and connection, all types of Schubert & Salzer microvalves feature minimal Kv values of up to 0.0027 and a nominal pressure of PN320. They are standardly available in nominal sizes from DN 8 to DN 15 and for media temperatures from –60 °C to +210 °C. Special high-temperature versions of the microvalves can even be used for media temperatures up to +530 °C.

All valve housings are made from stainless steel 1.4404 solid material and are equipped with metallic, leak-tight, replaceable seat assemblies made of hardened stainless steel or hard metal. This ensures long service life and maximum reliability even in high-pressure applications. Through a special high-pressure packing, Schubert & Salzer also achieves high tightness during frequent switching – even in hydrogen applications.

Expandable with smart electronics

A special feature of the microvalve type 7042 is the integrated digital position controller type 8049, which is easy to install in a top-mounted configuration. The type 8049 is also available in ATEX or FM versions and can be equipped with IO-Link connectivity. With IO-Link position controllers, the microvalve provides extensive status data. Analyzing this data enables predictive maintenance planning as well as fault analysis – process safety and system reliability are increased.