Val-Matic Valve & Mfg. Corp. offers all-stainless steel wastewater air valves in sizes 1"- 4" for single housing and sizes 1"- 8" for dual housing. The thinner valve wall allows for lightweight design and a reduced weight of 20-25% from our standard cast iron bodies. The Val-Matic stainless steel wastewater air valve is provided with Buna-N resilient seating and Type 316 stainless steel body, trim, and float for protection against corrosion. The valve design provides ease of maintenance and years of trouble-free operation in the harshest conditions, including: grit and sewage service, desalinization, and mining and leaching applications.