ZXP pneumatic single-seat adjusting valve, ZXN pneumatic double-seat adjusting valve, ZXM pneumatic sleeve adjusting valve are the important products of pneumatic adjusting valve, use top-guide structure, equipped with multi-spring actuator. Impact structure, light weight, flexible action, S-type streamline channel, small loss of pressure drop, large capacity, precise flow characteristics, convenient assembly. Widely used for controlling gas, liquid, processing parameters, like pressure, flow, temperature, liquid, keep them at the given value. This series of product contain standard, adjusting cut-off, bellows sealing, jacket insulation; nominal pressure: PN10、16、40、64; nominal diameter: DN20~400, fluid temperature: -200℃~560℃; leakage level: IV level or VI level; flow characteristics: linear or equal percentage