Burst Disc Plug - Brass
This is the correct plug to use with a three piece burst disc. The plug is flat on the bottom and will not score the burst disc. Fits: Sherwood (old ones) Blue Steel Thermo Dive Rite Highland Salvo Halcyon Important note: If you have a one piece burst disc you can not make it a three piece burst disc by just pulling it apart. One piece burst disc run an edge on the plug that the washer/disc combo seals to. A Three piece disc uses a flat on the plug to seal against. Do not be cheap here replace the plug. If you do not the tank will fill like normal but will keep blowing discs once it gets to higher pressure it will blow. The reason this happens is the burst disc gets scored from the plug being wrong.