"I was disappointed to find that the end cap on this, which looks in the photo like brass, is just brass-coloured plastic, and broke in transit with a larger shipment. I think something was dropped on the float arm.
Screwfix were very good, and sent me a replacement the next day.
it is rather a budget valve and the Pegler is worth the extra."
"Internally, in essence it's the same as other makes - BUT instead of a soft black rubber diaphragm washer this one has a firmer white washer with a bonded-on white hard plastic cone. The tip of the cone fits into a larger than normal nozzle (ie not the standard white nozzle used for HP systems). So if there's any disturbance in the inlet as the valve is nearly closed - and there always is - then the cone vibrates in the nozzle (hard plastic against hard plastic) and everything they touch resonates also. Result - enough noise to wake folk. And yes - I did check that all components were properly seated and secured ! I've had to swap out (with more expensive but more conventional internals) both of the two I've installed & will be returning all my stock for a refund as I consider this a poor design that's not been properly road-tested."