H42W-16P不锈钢法兰立式止回阀HH42W-16P 单向逆止阀

HC41X-16Q球墨铸铁消声法兰止回阀HC41X-16Q*式

H41X-16C消声钢制止回阀H41X-16C单向逆止阀

H44W-16P法兰不锈钢止回阀ZH44W-16P单向逆止阀

H71W-25P不锈钢对夹升降式止回阀H71W-25P单向逆止阀

H41W-16P不锈钢升降式止回阀ZH41W-16P 单向阀

HH44X-16微阻缓闭止回阀HH44X-16型减振耐磨噪音低