checkvalve

常见例句

• THE STRUCTURE LENG OF DOUBLE FLANGE JOINT BUTTERFLY VALVE AND DOUBLE FLANGE JOINT BUTTERFLY TYPE CHECKVALVE
  双法兰连接蝶阀和双法兰连接蝶式止回阀结构长度
• Valves;fittings;faucet;etc.;Ballvalve;Bibcock;anglevalve;Checkvalve;Gatevalve;Sanitareyware;
  三角阀;其他水暖五金;水暖五金;水嘴;水龙头;
• choker checkvalve
  阻气单向阀
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