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Stripe Hog Systems
Rupture Discs (Burst Discs)
There are two rupture discs installed on the high
pressure side of the Ultra-high pressure pump that
protect the high pressure waterblasting system
against unusually high spikes in pressure. The
rupture discs are designed to burst and immedi-
ately relieve pressure if the water pressure in the
ultra-high pressure system exceeds the disc burst
rating. One rupture disc is set to rupture or burst
at a higher psi than the other, typically 50,000
psi (3447 BAR) for one disc and 56,000 psi (3861
BAR) for the other. This design is a safety feature
to ensure both rupture discs do not burst at the
same time which could damage components in the
Ultra-high pressure system. The burst rating for
each rupture disc is calculated based on 1.25 times
the maximum operating pressure of the ultra-high
pressure system and 1.4 times the maximum op-
erating pressure of the ultra-high pressure pump.
Never operate the system without the properly
rated rupture discs installed. If a rupture disc
bursts it will have to be replaced prior to resum-
ing Waterblasting operations. (Refer to Rupture
Disc Replacement Procedure in the maintenance
section of this manual). Always nd and correct
the problem that caused the rupture disc to burst
before reactivating the machine. Test the high
pressure circuit at low pressure after replacing
a rupture disc to verify proper system operation
before resuming high pressure operations.
Typical Rupture Disc & Label
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