For circular sightglasses to Model DIN 28120 or similar.
Application:
For intermittent, continuous or automatically controlled pressure cleaning of the underface of a sightglass disc. Suitable for pressure and vacuum vessels subject to hydraulic test certification for all standard ratings and use in explosion hazardous zones as well as non-hazardous zones.
Fitting:
By means of screwed ends, through clearance hole in cover flange into sightglass weld flange to form pressure-tight seal.