PRODUCT DESCRIPTION Our blank plug is designed to fit standard UK 64mm (2 ½") standpipes, dry riser valves and other firefighting equipment to keep out dirt, rubbish, chewing gum, etc. These can be called dust caps, blank plugs, blanking caps, or many other names but they all fit the instantaneous coupling, have a retainer chain and do the exact same job. Manufactured for Vigil Products, you have a choice of blanking cap material (see options) in rubber or plastic where water pressure retention is not required and light alloy where water pressure is present.
