Floating ball valve Z28W

lever3-piecehigh-temperature

High Pressure High Temperature Class 2500, full differential pressure for sizes up to and including 2″ (DN50), differential pressure of up to 255 bar (3700 psi) for sizes 2½” (DN65) and above with hybrid seats. Pressure containing parts are in compliance with ASME B16.34, for wall thickness, design type-tested for burst testing of four times the pressure rating for 5 minutes. A one-size-up stem made of high tensile material complies with ASME B16.34 and API 6D for drive train requirements provides sufficient safety factor during operation. A special hybrid seat design is comprised of a metal housing and polymer insert machined as a single unit provides bubble tight shut-off (Rate A), combined with lower operating torque. Materials: Stainless Steel, alloys, Carbon Steel – selected to meet temperature and application. ASME B16.34 listed cast or forged material for the valve body and ends. Surface treatments & coatings – LTPN, HVOF Cr₃ C₂ (Chromium Carbide), HVOF WC-Co (Tungsten Carbide) and Stellite. Robust design: Pressure containing parts are in compliance with ASME B16.34 (with modifications for some series). Leak rate to EN12266-1 Rate B (factory tested) is achieved by accurate grinding and lapping processes. Constant preloading of ball/seats set obtained by Inconel 718 Belleville spring. Pressure tested: Designs are burst proof tested for 4 times the maximal working pressure. Designed and tested per testing & acceptance criteria ANSI/FCI 70-2.