Pressure Relief Valves - Farris Engineering
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Sizes 1ʺ X 2ʺ to 20ʺ X 24ʺ. Actual orifice areas from 0.150 to 176.7 square inches. Pressures from 15 to 6000 psig. Temperature range from -450° F to +1500° F. Steel body and bonnet with stainless steel trim.
Optional balanced bellows design isolates working parts and top-works from fouling or corrosive service, and nullifies the effects of back pressure on valve performance. The “D” to “T” orifices meet API Standard 526 covering orifice areas and center-toface dimensions. Super capacity types range from “W” (63.62 sq. in.) to “Z” (176.7 sq. in.) and have a maximum set pressure limit of 300 psig.
Optional materials of construction include complete 316 stainless steel, Monel®, and Hastelloy® C. Also available with materials in compliance with NACE standards. Higher temperature models use chrome moly body and bonnet. Optional O-ring elastomer seat available for maximum tightness. Applications: air, steam, gas, vapor, and liquid process applications.