Zook SFAZ Bursting Disc

The Zook SFAZ Bursting Disc (rupture discs) is a solid metal scored disc design. They are designed to be used specifically in the UHZ Holder. The Zook SFAZ Bursting Disc incorporates a Fail-Safe Design. If the SFAZ Series Disc is damaged or incorrectly installed, it will always burst at or below the marked burst rating as indicated on the disc tag.

• Non-fragmenting solid metal cross scored disc is scored on the vent side to minimize the effect of product build-up
• Operating pressures up to 90% of marked burst pressure
• Flat seat design
• ASME UD marking available (Gas service only)
• Solid metal scored disc designed for Non-fragmentation
• Excellent for liquid, gas or 2-phase flow
• Scored after disc material is formed to a high crown height. Permits use of thicker material and allows lower burst ratings which withstand full vacuum
• Burst ratings 15 to 3600 psig
• Sizes 1/29thru 249diameters
• Temperature ratings to 1000°F (538°C)
• Standard material of construction is Nickel. Optional materials 316SS, Inconel, Monel, Hastelloy C and Aluminum are available
• 3-dimensional stainless steel tag permanently engraved with complete disc specifications
• ASME UD marking available (gas service only) Polymerization Vessel Protection
• Withstands corrosive attack
• Positive-to-negative cycling
• Higher operating ratio
• Use alone or combine with relief valves

Relief Valve Protection:
SFAZ Series Discs mounted under the valve isolates working parts from hostile environments

Options:
Liners: TFE liners are available to provide protection from corrosive media if required. Refer to Table 1 for maximum temperature ratings for discs and liners.

Protective Rings are recommended for use with SFAZ Series Discs to provide stability and protection when thin materials and/or liners are used

UHZ Type Flat Seat Insert Disc Holder:

Features

• Flat seat provides improved rupture disc sealing
• Available in nominal sizes ranging from 1/2″ thru 30″ in standard flange classes
• Standard materials of construction are 316SS and carbon steel. Other materials available on request
• Permanently attached stainless steel nameplates are standard. Nameplates indicate flow direction and provide visual verification that holder assembly is properly oriented in the piping system
• Stainless steel safety designed side clips are standard, allowing for pre-assembly of disc into holder
• Fits type SFAZ, FDZ and FPBZ Series Discs
• Available options include: gauge tap; nipple and tee; excess flow valve; pressure gauge; J-hook; special facings and coatings