Abstract: Abstract. Gate valves serve as critical switching devices for controlling natural gas flow, but under ultrahigh pressure and extreme temperature conditions, their operational torque becomes excessively high, preventing ...

Abstract: To study the factors affecting the sealing performance of a Y-shaped sealing ring at the stem of a 140-MPa cage throttle valve under −46 °C, 25 °C, and 180 °C operating conditions, uniaxial tensile tests were conducted on ...