https://www.powtech.de/en/ausstellerprodukte/powtec23/product-10328934/duplex

The best choice for applications involving highly oxidizing agents and halogens
Disks extend corrosion resistance by utilizing a liner on the flat surface of the disk that contacts the process media
Disks are capable of resisting virtually any corrosive except elemental free fluorine
Available in nominal sizes 1/2” (15 mm) thru 24” (600 mm) diameters
Designed to fit industry standard flanges ASME B16.5, ISO and JIS
Burst ratings 0.50 psig (0.03 barg) to 1000 psig (68.95 barg) or higher
0% manufacturing range
Operating pressures to 90% of the disk’s marked burst pressure. Contact ZOOK for operating ratio for burst pressures below 40 psig (2.76 barg)
Temperature ratings –290°F to +700°F (–143°C to +371°C) Maximum temperature rating without insulation is 430°F (221°C) or 700°F (371°C) with insulation. Contact ZOOK for higher temperature ratings. The specified temperature shall be at the disk location at the time when the disk is expected to rupture
External type vacuum supports are available for vacuum service (Contact ZOOK when vacuum is present)
All flange group 2 disks are armored
Liners available: PTFE (Standard), PFA and FEP. Contact ZOOK for additional liner materials
ASME (UD) and PED (CE) compliance available

ZOOK is committed to finding pressure relief solutions for our customers that maximize their productivity and performance while keeping them safe. ZOOK is a global market leader with over 90 years of manufacturing expertise of high quality metal & graphite rupture disks and other pressure relief products. ZOOK has global locations in the USA, United Kingdom, Canada and Malaysia, with state-of-the-art manufacturing facilities in Canada and the USA.

Our products are sold in over 65 countries and to-date have over 5,000 customers buying our products worldwide.

We are dedicated to investing heavily in the latest technology and production to stay competitive in the marketplace, and are able to offer comprehensive solutions to the selection and sizing of products best suited for each customer application.

Our graphite division is the first and largest graphite company in the world committed to manufacturing quality impervious graphite rupture disks through product innovations and superior service. We were the first graphite rupture disk manufacturer to earn the ASME Code UD symbol stamp and certificate of authorization.