22^oC温度下压力为150 psi，非冲击性水
150 psi at 73°F water–non-shock

　　Chemtrol蝶阀型号C主要用于一般的水应用领域。这种蝶阀已通过美国卫生基金会的认证，特别适用于饮用水应用。型号C阀门也成功地应用于处理弱酸溶液和中等浓度的碱性溶液。但是，这种阀门不能用于接受氯气或漂白剂注射的水管。也不能用于水族中心中接受低浓度漂白剂注射的循环管道。独特的设计使得型号C蝶阀具有结构简单的特点。
　　The Chemtrol Model-C Butterfly Valve is intended for general water applications. With National Sanitation Foundation (NSF) listing, it is ideal for potable water service. The Model-C valve has also been successfully used to handle mild acidic solutions and medium concentrations of alkaline solutions. However, this valve should not be used in water lines receiving chlorine gas or bleach injection. Nor should it be used in aquatic center recirculation lines, which receive low level bleach injection. Simple construction of the Model-C butterfly valve results from its unique design.
　　在一件式模铸阀体的钻孔内没有传统的橡胶密封。但是，在黄铜阀瓣上模铸着三元乙丙橡胶。这种三元乙丙橡胶材料被压缩在阀瓣的黄铜部分和穿过PVC阀体的直线镗孔上，为这种蝶阀产生密封性能。在组装时，两个配置腔内端口花键的硬化416不锈钢轴模压在内部为黄铜的阀瓣上，构成上部和下部阀杆。
　　It does not have a traditional rubber seat inside the bore of the one-piece molded body. Rather, EPDM is molded over a brass disk. This EPDM material is compressed between the brass portion of the disk and straight bore through the PVC body and creates the sealing mechanism for this butterfly valve. At assembly, two hardened 416 stainless steel shafts with splines on the inboard ends are swaged into the brass inner disk to become the upper and lower stems.

特点
Features

• 玻璃纤维填充TFE轴承衬套，加长了几乎上部和下部阀杆的全长，转移了阀瓣上的侧面液压负载，使其均匀分布在阀体上，确保降低轴承压力，延长无故障操作寿命。
  Glass-filled TFE bearing-bushings, extending almost the entire lengths of the upper and lower stems, transfer the hydraulic side load on the disk and evenly distributes it to the valve body to ensure low bearing stress with long, trouble-free operation.
• 坚硬的黄铜阀瓣，采用三元乙丙橡胶塑封。
  Rigid brass disk is encapsulated with EPDM.
• 经久耐用的一件式模铸PVC阀体。
  Durable one-piece molded PVC body.
• 内置O形环端面密封，因此在对接法兰之间不再需要密封垫圈。
  Built-in O-ring face-seals require no gaskets between mating flanges.
• 可提供用于高处和地面以下系统的手动操作的和其它特殊需求的阀门附件。请参阅第24页。
  Valve accessories for manual operation in overhead or underground systems and other special needs are available. Refer to page 24.
• 请参阅《Chentrol阀门执行机构指南》，全面选择电动和气动执行机构及其附件，包括塑料外壳。可提供现场安装或工厂安装的安装组件。
  Refer to the Chemtrol Valve Actuation Guide for a full selection of electrical and pneumatic actuators with accessories, including plastic housings. Mounting kits are available for field or factory assembly.