High temperature ventilation butterfly valve operated by pneumatic or electric actuator, with a special designed metal seat keep valve plate to a flat seal without lining structure, thus significantly reduce operating torque. Additional install a radiator between the valve and actuator, avoid the influence of the high temperature possible heat transfer to the actuator.
Widely use for cold and hot flue gas pipeline, that implementa remote automatic control. Especially suitable for a low differential pressure and mass flow pipelines.
Product type | High Temperature Ventilation Butterfly Valve |
Model | QD641Lw-1, QD941Lw-1 |
Nominal diameter | NPS 4”~NPS120”(DN100~DN3000) |
Operating pressure | 0.01~0.1MPa |
Body Material | Q235, 16Mn, 304, 2520 etc |
Trim material | 304/ 2520 |
Medium Temperature | -29 ~ +1000ºC |
Connecting end | Flange |
Design standard | GB/T 12238, API 609, JIS B2071 |
Face to face | GB/T 12221, ASME B16.10, JIS B2002 |
End Connection | GB/T 9113, ASME B16.5, JIS B2211 |
Inspection and test | GB/T 26480, API 598, JIS B2003 |
Operation device | pneumatic,electric actuator |