Model ASB

The Model ASB regulator has been specifically designed for use with acid-forming gases such as Hydrogen Chloride or Boron Trifluoride. It is constructed primarily of Aluminum-Silicon-Bronze metal, which has shown superior corrosion-resistant properties in these demanding services.

The ASB also features a Monel® nozzle, and Monel® filter screens, along with a stainless steel diaphragm which has been lined with Hastelloy C-22®. This combination allows for its use in high purity applications, while also enhancing its resistance to corrosion.

• Aluminum-Silicon-Bronze Construction provides superior corrosion resistance to acid-forming gases such as HCl.
• Stainless Steel Diaphragm Lined with Hastelloy C-22® maintains gas purity while also providing enhanced resistance to corrosion.
• High Purity Regulator Design permits vacuum purging of regulator.
• Tied Seat (tied diaphragm) ensures positive shutoff if particulate matter should lodge in the seat, a common problem with corrosive gases.
• Threaded Holes in Rear of Regulator permit front panel mounting.
• Aluminum-Silicon Bronze Diaphragm Seal Outlet Valve maintains gas purity.

• Bonnet Vent Connector provides a 1?8" NPT female port allowing bonnet to be connected to a vent line or disposal system as a precaution in the unlikely event of a diaphragm failure.
• Internal (Inboard) Helium Leak Test and Test Report determines inboard leak rate; test report certifies leak rate of less than 2 x 10^-8 sccs air equivalent.
• External (Outboard) Helium Leak Test and Test Report determines leak rate of gas from regulator to atmosphere; test report certifies leak rate of less than 5 x 10^-7sccs air equivalent.

Table I