D371X巴尔蜗轮对夹式蝶阀D371X

FXD71X巴尔FXD71X信号反馈蝶阀

D372X巴尔蜗轮对夹式软密封蝶阀D372X

D371X巴尔蜗轮对夹式软密封蝶阀D371X

D341X巴尔蜗轮法兰式软密封蝶阀D341X

D641X巴尔气动法兰式蝶阀D641X

D671X巴尔气动凸耳式蝶阀D671X

D673巴尔气动对夹式蝶阀：D673

D671X巴尔气动对夹式蝶阀D671X

D671N巴尔气动对夹式尼龙蝶阀D671N

D671X巴尔气动对夹式脱硫蝶阀D671X

D671X巴尔气动对夹式软密封蝶阀D671X