D341W-1C(P)蜗轮式手动通风蝶阀技术参数D341W-1C(P)蜗轮式手动通风蝶阀技术参数公称通径DN（ mm ）尺寸（ mm ）DD 1LHH 1n-?d手柄式2003202801403901708-1825037533544019712-1830044039517051522012-2235049044556525012-2240054049519063027016-2245059555068030016-2250064560073032520-22蜗轮传动600755705210100651020-26700860810111856024-26800975920130061824-3090010751020250140066824-30100011751120150071828-30110012751220162076828-30120013751320172081832-30130014751420182086832-30140015751520300192091836-301500169016302010100036-301600179017302110105040-301700189018302210110040-301800199019302410115044-301900209020302510120044-302000219021302610125048-302200240523403502860135052-332400260525403060145056-332500270526403200155356-332600280527403300165560-332800303029604003500175564-36300032303160370017606836