With 2-valve manifolds, the block-and-bleed version is standard. The shut-off valve separates the process from measuring instruments such as pressure gauges, switches or transmitters. By closing this valve the instrument can be safely dismounted for services like calibration or replacement. The vent valve allows the safe venting of the instrument, prior to the dismounting or for zero point check.
The non-rotating spindle tip reduces wear of the sealing elements. This results, particularly with frequent opening and closing, in a noticeable increase in the service life.
■ Shut off and vent pressure measuring instruments
■ For gaseous and liquid aggressive media that are
not highly viscous or crystallising, also in aggressive environments
■ Process industry: oil and gas, chemical and petrochemical industries, power generation, water and wastewate
