Orange Burst Disc - 6000 psi Working Pressure Over-pressure safety device designed to burst in the event of a spike in pressure preventing damage to equipment. £2.35 Quantity: at £2.35 each Add To Basket 0 in your basket View Basket Checkout Orange burst disc for working pressure 6000 psi, designed to burst at around 6900 psi. Price per disc. Full range of colour coded burst discs available. Please ensure you select the correct disc for your machine.