SR-TC Rupture Disk

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.

• Available in standard AAR burst ratings.
• Resists overpressure surges of 125% to 140% of the disk"s rated burst pressure.
• Simple Installation
• Accurate
• Superior Cycle life under pressure cycling conditions

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