www.stauff.com/6/en/#109 E 109 Ball Valves for Gas Applications STAUFF ball valves are used for many gas applications, such as: General gas supply systems, Filling plants, compressor stations, gas stations, analysis equipment Ball valves with pneumatic actuator in gas stations. The design follows the Pressure Equipment Directive 97/23/EC. The ATEX Directive for hazardous location EX II 2G c will be proved in single test on demand. The materials for body, ball and seals are dependant on the gas and application in consideration of the directives. * Pressure up to max. allowed nominal pressure of the ball valve Further ball valves up to DN 200 with flange connector, as well as 3/2-way-selector ball valves, multi-way ball valves and ball valves for manifold mounting and cartridge ball valves are also available. The requirements and tests are in accordance to DIN 3230 Part 5, test group PG1 or PG2, Material and test certificate DIN EN 10204-3.1, Certification to Pressure Equipment Directive 97/23/EC. The leaking rate can be proved with a Helium leakage test device up to a leakage rate of 10 –9 mbar x l/sec. STAUFF recommends the use of the version with errosion protection ring in order to extend the lifetime of the seats look page 130. Only if the most important parameters like pressure, medium, temperature, medium concentration and operation cycles are known the best or most suitable material combination and the most economical solution can be offered. Except the general suggestions for the material combinations the chemical resistance and further directives are to be considered. For Fluids like oxygen, hydrogen, argon, helium and sour gas we request a contactation. Sour gas application: For fluids with hydrogen sulphide (H2S) – parts ball valves can be delivered in accordance to the NACE Standard MRO175. Double block and bleed valve for sampling. Gas stations: For gas pumps both ball valves with floating ball and with trunnion ball are suitable. Most important for the design are the frequency of operation cycles in use with actuators. Assembling of actuators to ISO 5211 or direct mounting. Ball valves for analysis techniques and Sampling Ball valves are deliverable as "double block and bleed valve". Part of this product range are the TALFIRE – ball valves. These ball valves meet the requirements of the TA-Luft (technical directive for clean air). They are used in applications with air pollution substances. Filter station for the filtration of gases with STAUFF 3-way-selector ball valves for 250 bar / 3600 PSI and +200°C / +392 °F. In case of maintenance the gas flow is diverted by a 3-wayselector valve combination allowing the filter elements to be changed. Due to the excellent KV-value this valve is the ideal switch over unit for use in high leak-tightness application. DN PN Approved Material Combinations (Materials: Body / Ball + Stem / Ball Seat / O-Rings) Ball Valve (bar) for Gas Applications for Hazardous Location EXII 2G c (ATEX) Type 6 - 25 16 Steel / Steel / Delrin® (POM) / NBR (Buna-N®) Steel / Steel / Delrin® (POM) with Erosion Protection Ring / NBR (Buna-N®) Steel / Steel / PEEK with ATEX Approval / NBR (Buna-N®) Steel / Steel / Delrin® (POM) with ATEX Approval / NBR (Buna-N®) BBV 32 - 50 16 Steel / Steel / Delrin® (POM) / NBR (Buna-N®) Steel / Steel / Delrin® (POM) with Erosion Protection Ring / NBR (Buna-N®) Steel / Steel / PEEK with ATEX Approval / NBR (Buna-N®) FBV 6 - 25 500 315* Steel / Stainless Steel / Delrin® (POM) / NBR (Buna-N®) Stainless Steel / Stainless Steel / Delrin® (POM) with Erosion Protection Ring / NBR (Buna-N®) Steel / Stainless Steel / PEEK with ATEX Approval / NBR (Buna-N®) Stainless Steel / Stainless Steel / PEEK with ATEX Approval / NBR (Buna-N®) Steel / Stainless Steel / Delrin® (POM) with ATEX Approval / NBR (Buna-N®) Stainless Steel / Stainless Steel / Delrin® (POM) with ATEX Approval / NBR (Buna-N®) BBV 32 - 50 315* Steel / Stainless Steel / Delrin® (POM) / NBR (Buna-N®) Stainless Steel / Stainless Steel / Delrin® (POM) with Erosion Protection Ring / NBR (Buna-N®) Steel / Stainless Steel / PEEK with ATEX Approval / NBR (Buna-N®) Stainless Steel / Stainless Steel / PEEK with ATEX Approval / NBR (Buna-N®) Stainless Steel / Stainless Steel / Delrin® (POM) with ATEX Approval / NBR (Buna-N®) FBV Catalogue 6 § Edition 06/2024 Special Application Valves
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