Valve World Magazine September 2022 | Page 70

INNOVATIONS & SOLUTIONS
Posi-flate butterfly valve sizes from 2 to 24 Inch Patented OHL high-temperature valve
Posi-flate ’ s unique butterfly valve design uses air pressure to expand the seat against the disc , providing even pressure distribution for a bubble-tight seal , every time . Because the seat makes only casual contact with the disc during valve opening and closing , there is minimal disc impingement . This is in contrast to conventional butterfly valves where disc impingement leads to the shaving of the seat , decreasing the overall performance and valve life . Substantially less torque is required to open and close the Posi-flate butterfly valve , thus a smaller actuator can be used resulting in lower overall valve cost . In actual comparison tests and documented field applications , the Posiflate butterfly valve outperformed all other valves . In fact , a Posi-flate valve life of one to three million cycles , even in extremely abrasive applications , is not uncommon . For dry solids , gases , and slurry applications
, the Posi-flate inflatable seated butterfly valve is unsurpassed . The Posi-flate Series 585 / 586 inflatable seated butterfly valves are designed for the most severe conditions . The seat is designed for heavy-duty applications and higher operating pressures . Standard valve sizes range from 2 ” ( 50mm ) to 24 ” ( 600mm ) and fits both ANSI and metric flanges . A full line of actuators , limit switches , and controls are available to suit individual applications .
The industrial valve manufacturer OHL Gutermuth , based in Altenstadt , is renowned for its innovative strength and manufactures a patented high-temperature valve that is used in applications involving extreme temperatures and pressures . Hydrogen is regarded as a key energy source in the transition to green energy and plays a central role in environmentally friendly production processes , such as the manufacture of climate-neutral steel . In direct reduction plants , liquid crude iron is no longer produced , but instead solid sponge iron . This production process is set to become CO2-neutral in the future with the help of hydrogen . This is a fascinating process that is occupying leading plant operators and a wide range of industrial sectors . The CAM-HT hightemperature valve from OHL Gutermuth is perfectly suited for this type of application . It reliably shuts off gaseous media at pressures of up to 10 bar and temperatures of up to + 1200 ° C and ensures maximum functionality . OHL Gutermuth has been successfully meeting the challenge of developing robust and innovative shut-off valves for extreme temperatures for many
decades now . Thanks to this expertise , the company has received numerous certificates and awards . OHL was granted the European patent for the double-seat shut-off valve in 2017 , and the design of the patented high-temperature valve is valid until 2035 . True to the motto “ maximum safety and quality ”, the Altenstadt-based export specialist also insists on outstanding quality for all its other valves . Sustainability and reliability are the basic requirements for all products that leave the Altenstadt production halls for every corner of the globe . OHL can provide the perfect valves for any application where hot gases have to be shut off safely .
New product release for Oliver Valves
Oliver Twinsafe has been working with their sister companies : Oliver Hydcovalves , and Oliver R & D , to prepare their 2 ” metal seated trunnion ball valve ready for hydrogen applications . Rigorous testing using helium which is the best substitute for hydrogen has been carried out by R & D technician John Whitehead who said “ in order for the Trunnion valve to pass testing it had to meet with stringent ISO 15848-1:2015 Tightness class B certification including ISO 5208:2015 zero seat leakage rate A . We ’ ve achieved this with precision engineering and by providing a high-quality seal face finish . “ This has been my first involvement on the Hydcovalves project and as with all of our test standards , its tough-going and meticulous work are required to underpin the safety and certification which is paramount to the team . I ’ ve thoroughly enjoyed the hydrogen testing process , and to be involved in close collaboration with the Oliver group of companies at a very exciting time within the energy industry .”
70 Valve World September 2022 www . valve-world . net