... Valve (It can be electric type)Applications: Control flow, pressure, temperature, etcTwo types: modulating/control type, shut off/on-off typeMediums ... exhibit low hysteresis and deadband, good control characteristics, tight shutoff, rugged construction, high performance packing, and easy maintainability. ... levelHard-sealing IV level, Soft-sealing VIFlange sizeConform with JB/79.1(2)-94,HG20592-97,GB, ...