loosefloattrap恒温式疏水阀thermostatictrap金属膨胀式蒸汽疏水阀metalexpansionsteamtrap液体膨胀式蒸汽疏水阀liquidexpansionsteamtrap双金属膨胀式蒸汽疏水阀bimetallicexpansionsteamtrap压力平衡式恒温疏水阀balancedpressurethermostatictrap热动力式疏水阀thermodynamictrap脉冲式蒸汽疏水阀impulsesteamtrap放气阀(自动放气阀)airventvalve(automaticairventvalve)(疏水阀用)平板式滑动闸阀slabtypeslidinggatevalve盖阀flatvalve换向阀divertingvalve,reversingvalve热膨胀阀thermoexpansionvalve自动关闭阀self-closinggatevalve自动排液阀self-drainingvalve管道盲板阀line-blindvalve挤压阀squeezevalve(用于泥浆及粉尘等)呼吸阀breathervalve风门、挡板damper减压阀pressurereducingvalve,reducingvalve控制阀controlvalve膜式控制阀diaphragmoperatedcontrolvalve执行机构actuator背压调节阀backpressureregulatingvalve差压调节阀differentialpressureregulatingvalve压力比例调节阀pressureratioregulatingvalve1.6.4未指明结构(或阀型)的阀切断阀blockvalve;shut-offvalve;stopvalve调节阀regulatingvalve快开阀quickopeningvalve