阀杆加长件
Stem Extensions

　　阀杆加长件可以任意长度配置在允许远程操作的蝶阀上。加长阀杆的顶部法兰，塞轴径和塞轴上平面的对边距离，在阀门选型时应具有相同的尺寸。这使得将齿轮操作机构、执行机构和适配器衬套在从阀门安装法兰到加长阀杆顶部法兰上时，具有可交换性。订购时，请指定阀门通径，规格型号，以及阀门法兰至加长法兰(用户指定长度，如右侧所示)的准确距离。阀杆加长件长度最常为10英尺。如果需要长度超过10英尺的加长阀杆，请咨询厂家。
　　Stem extensions can be furnished to permit remote operation of butterfly valves in any required length. The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected. This allows interchangeability of gear operators, actuators, and adapter bushings from valve mounting flange to extension stem top flange. When ordering, specify valve size, figure number, and the exact distance from the valve flange to the top of extension flange (customer-specified length shown at
right). Stem extensions are available in lengths up to 10 feet. For stem extensions in excess of 10 feet consult factory.

可调节链轮齿轮圈
Adjustable Sprocket Rim

　　巴比特合金可调节链轮齿轮圈，可用于位于高处，通常难于接近的蝶阀的远程操作。订购时，请指定链轮齿和‘链条编号或美国尼伯科阀门型号和通径。链条长度也必须指定。
　　The Babbitt Adjustable Sprocket Rim will provide for remote operation of butterfly valves in high, normally out-of-reach locations. When ordering specify either the sprocket and chain number or the NIBCO valve figure number and size. The chain length must also be specified.

没有使用硅酮 - 不含硅酮
No Silicone Used - Silicone Free Issue

　　在组装期间，所有蝶阀都可能接触到润滑脂或气溶胶喷射中的硅酮。LD/WD系列蝶阀可以特别规定为无测试“干燥组装”。这些阀门将在润滑脂或气溶胶喷射中不采用硅酮。
　　All butterfly valves may incorporate the use of silicone in either grease or aerosol form during the assembly. LD/WD series butterfly valves can be special ordered as “Assemble-Dry” without test. These valves will be assembled not using silicone in the form of grease or aerosol spray.
　　注意：虽然在阀门组装期间规定不能采用含有硅酮的润滑剂，但是空气中潜在的硅酮颗粒仍然使得我们不能保证我们的阀门100%不含硅酮。
　　Note: Even though provisions are made to assemble valves and not incorporate the use of silicone lubricants, the potential for it to be present as air-borne particles prevents us from certifying that our valves are 100% silicone free