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SVI? Rupture Disk (Bursting Disc) Assembly for Relief Valve Isolation

SVI? Rupture Disk (Bursting Disc) Assembly for Relief Valve Isolation
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SVI? Rupture Disk (Bursting Disc) Assembly for Relief Valve Isolation - 1

SVI Rupture Disk Assembly for Relief Valve Isolation Offering innovative solutions for over 80 years Visit our website for the most complete, up-to-date information The SVI is a single-use rupture disk (bursting disc) assembly for isolating safety relief valves and for retrofit with fixed piping. • Solid metal reverse buckling S-90 disk welded into a holder assembly • Petals open up along cross-scored lines • Available in standard sizes: 1 1/2 inch (40mm) through 6 inches (150mm) • The SVI fits between standard companion flanges and drops into inlet bore • Designed to isolate relief valves from process media and keep process fluid from leaking to the atmosphere. • Standard disk materials are nickel and Inconel®, and the body and flange are 316 stainless steel - consult BS&B for other disk material options • Fluoropolymer boot available upon request for added corrosion resistance on inlet side of disk assembly • “-5% and -10% manufacturing design range (MDR) available Inconel® is a registered trademark of Special Metals Corporation and its subsidiaries • Leak-tight welded construction • Simple installation without sensitivity to companion flange torque • Used with standard flat fiber, elastomer, or spiral wound gaskets • Simple retrofit to existing relief valve systems • Designed for non-fragmentation • Full vacuum resistance • Back pressure resistant to at least burst pressure • Compact low mass construction • Available with ASME “UD” stamp or “CE”mark

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SVI? Rupture Disk (Bursting Disc) Assembly for Relief Valve Isolation - 2

Specifications for SVI Rupture Disks at 72°F (22°C) Nominal size in Engineering Information Manufacturing Design Range (MDR) 2. Check proper material for application pressure and temperature requirements as well as desired corrosion resistance. Minimum and maximum pressure ratings applicable at 72°F (22°C). SVI body is 316 stainless steel. Other materials available upon request. SVI rupture disk assemblies are available with 5% and 10% MDR. Example: If a 200 psig SVI is ordered with a 10% MDR, it may be tagged at any pressure between 200 and 180 psig (13.8 to 12.4barg). 1. Select the proper...

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