Hi all,
When blowing out the main drain how do you know if an airlock has been achieved? I blow out the drain using a compressor, let it bubble for about 45 seconds, but after I close the valve I still get some bubbling here and there for a while. Is this normal or is the valve not closing properly perhaps? This is the first time I've closed the pool myself and I really don't want to screw it up
Thanks
When blowing out the main drain how do you know if an airlock has been achieved? I blow out the drain using a compressor, let it bubble for about 45 seconds, but after I close the valve I still get some bubbling here and there for a while. Is this normal or is the valve not closing properly perhaps? This is the first time I've closed the pool myself and I really don't want to screw it up
Thanks