A surge resistant rupture disk (bursting disc) for railroad took cars and over-the-road trailer service Industry.
The disk is designed for direct installation on to standard threaded or bolted type tank car fittings.
STANDARD PRESSURE RANGES OF SR-TC RUPTURE DISK
| RATING PSIG AT 72 F (22 C) | TOTAL BURST PRESSURE |
| 30 | 26-30 |
| 45 | 38-45 |
| 52 | 44-52 |
| 60 | 51-60 |
| 75 | 64-75 |
| 100 | 85-100 |
The burst range defines a minimum/maximum burst pressures including all manufacturing tolerances.
Performance
The SR-TC rupture disk (bursting disc) will resist overpressure surges* of 125% to 140% of the rated burst pressure for up to 0.5 seconds duration. Greater surge protection may be expected for shorter surge duration. The SR-TC rupture disk offers extended disk service life where the disk may be subjected to ‘humping” action or when rapid deceleration of an OTR trailer occurs.*The value of the over pressure surge depends on the disk’s burst pressure rating.
Installation
The SR-TC rupture disk (bursting disc) may be installed directly on to standard threaded or bolted type tank car fittings.
Construction
The slotted top section is protected by a tank car ring which also ensures burst accuracy. A vacuum support prevents damage to the disk, should the disk be subjected to vacuum during unloading or while the tank car is in transit. A spacer ring is located above the FEP/P’TFE seal and the top section.
Materials
Top section – Inconel Alloy 600.
Vacuum support and tank car ring – 316SS.
Spacer ring – PPS.
Seal FEP/PTFE
Urethane spacer