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

Product catalog summary

Overview
The SVI is a single-use rupture disk assembly designed for isolating safety relief valves and retrofitting with fixed piping. It is available in standard sizes ranging from 1 1/2 inch (40mm) to 6 inches (150mm) and fits between standard companion flanges.

Features

Solid metal reverse buckling S-90 disk welded into a holder assembly.
Petals open along cross-scored lines.
Standard disk materials include nickel and Inconel®, with the body and flange made of 316 stainless steel.
Optional fluoropolymer boot for added corrosion resistance.
Manufacturing design range (MDR) options of -5% and -10%.

Benefits

Leak-tight welded construction.
Simple installation without sensitivity to companion flange torque.
Compatible with standard flat fiber, elastomer, or spiral wound gaskets.
Designed for non-fragmentation and full vacuum resistance.
Back pressure resistant to at least burst pressure.
Compact, low mass construction.
Available with ASME “UD” stamp or “CE” mark.

Engineering Information
The SVI body is made of 316 stainless steel, with other materials available upon request. The rupture disk assemblies have a +5% burst tolerance and are available with 5% and 10% MDR. Performance tolerance combines MDR and burst tolerance into a single rating for CE marked assemblies.

Specifications
Minimum and maximum pressure ratings are provided for different nominal sizes and materials at 72°F (22°C). Recommended maximum temperatures are 900°F (482°C) for Inconel® and 750°F (398°C) for Nickel.

Selection and Ordering

Select the proper SVI assembly to fit the pipe size.
Check material suitability for application pressure, temperature, and corrosion resistance.
Specify quantity, temperature, burst pressure, optional fluoropolymer boot, and materials for disk and body when ordering.

Contact Information
BS&B Safety Systems, L.L.C., Tulsa, OK, USA. Phone: (918) 622-5950. Email: [email protected].
BS&B Safety Systems, LTD., Limerick, Ireland. Phone: 353-61-484700. Email: [email protected].

Catalog excerpts

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 SVI...

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