Parker Instrumentation has launched a range of one-piece double-block-and-bleed manifolds designed to reduce the size and weight of process monitoring instrumentation installations. Machined from a single steel forging, Parker’s new manifold design eliminates numerous joints – and potential leak paths – compared with arrangements constructed using discrete components. Incorporating flange interfacing, the new products connect easily to process piping. Called Pro-Bloc, the design is offered in a range of configurations and choices to provide optimal solutions for wide-ranging instrumentation requirements. Applications include instruments for offshore oil and gas platforms, petrochemical and chemical plants, and the provision of chemical injection and sampling points in process lines.
With Parker’s new Pro-Bloc range, users have a choice of two basic body styles: with a flange connection to the process piping on one end and an NPT thread connection for the instrument on the other; or as a flange-to-flange design. Users may also choose from six different flow arrangements, and specify valve types – choosing from ball, needle or OS&Y (outside screw and yoke) styles of valve for secondary isolation and venting. The primary isolation function is provided by Parker’s brand-new Hi-Pro ball valve. As standard, the manifold is fabricated from stainless steel, carbon steel, or duplex, and meets ANSI class 2500 pressure ratings. In addition to double-block-and-bleed arrangements for standard process monitoring applications, Parker offers Pro-Bloc with probes, suitable for process sampling or injection. Further options include fabrication from exotic materials including Super Duplex, Monel, 6Mo, Hastelloy and Incoloy 625, for applications in harsh operating environments, and/or involving corrosive media.
