标准(2)Standards (2)

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Chemtrol阀门结构和性能标准 Chemtrol Valve Construction and Performance Standards 　　30多年来，Chentrol产品设置的塑料阀门的结构和材料标准称为这个行业的标准。选型工程师应该了解下列内容： 　　For over 30 years, the construction and performance standards on plastic valves have traditionally been set by Chemtrol products for the industry to follow. Specifying engineers should know that: Chemtrol阀门100%经过阀座和外壳泄漏检测。 Chemtrol valves are 100% tested for both seat and shell leaks. PVC和CPVC材质Chemtrol阀门的承插端口符合ASTM标准D-2467 (PVC)和F-439 (CPVC)的尺寸要求，适用于目录80承插压力连接件。关于Chemtrol阀门的坚固的目录80类型承插和螺纹连接端口的尺寸细节，请参阅第31页的“工程技术参数”。 The sockets of PVC and CPVC Chemtrol valves conform to the dimensional requirements of ASTM Standards D-2467 (PVC) and F-439 (CPVC) for Schedule 80 Socket pressure fittings. For dimensional details of the rugged Schedule 80 type socket and thread end connections of Chemtrol valves, see Engineering Data, page 31. 所有Chemtrol阀门的螺纹连接端口符合ANSI B1.20.1(以前为ASAB2.1)标准中美国锥管螺纹的要求，符合ASTM标准D-2464 (PVC)和F-437 (CPVC)适用于目录80螺纹压力连接件的尺寸要求。 The threaded end connections of all Chemtrol valves meet ANSI B1.20.1 (was ASA B2.1) requirements for American Taper Pipe Threads and conform to the dimensional requirements of ASTM Standards D-2464 (PVC) and F-437 (CPVC) for Schedule 80 Threaded pressure fittings. 适用于所有Chemtrol阀门的法兰符合ANSI B16.5适用于150磅级钢管法兰标准有关外径和螺栓孔的要求。 The flanges attached to all Chemtrol valves meet the outside diameter and bolt hole requirements of ANSI B16.5 for 150 lb. Steel Pipe Flanges. PVC和CPVC的物理和化学性能，被ASTM标准D-1784归类为特性材料。这种材料，用在国内生产的Chemtrol阀门上，超过了为单元类别12454-B (PVC)和23447-B (CPVC)设置的最严格的要求。这些被规定在管道上使用的各种材料，其优点在于最高的流体静力设计应力额定值(2000 psi)和最好的耐腐蚀性能。 The physical and chemical properties of PVC and CPVC are classified and grouped into characteristic materials by ASTM Standard D-1784. The materials, used in domestically produced Chemtrol Valves, exceed the rigid requirements set forth for cell class 12454-B (PVC) and 23447-B (CPVC). These are the respective materials stipulated for use in pipes which merit the highest Hydrostatic Design Stress rating (2000 psi) and the maximum corrosion resistance. 所有PVC和CPVC材质的Chemtrol阀门都经过美国国家卫生基金会(NSF)的认证。这个独立的第三方认证机构保证这些产品和材料经过正式的检测，符合ASTM和ANSI标准。从公共卫生的利益出发，为了更加安全的传输饮用水，这个机构进一步检验证实所认证的产品符合NSF标准14，“塑料管道系统部件和相关材料”的化学/味道、气味和毒性方面的要求。 All PVC and CPVC Chemtrol Valves are listed by the National Sanitation Foundation (NSF). This independent third party certifier provides assurance that products and materials are regularly tested to comply with ASTM and ANSI Standards. In the interest of public health, the agency further verifies that the listed products conform to the chemical/taste, odor, and toxicological requirements of NSF Standard 14, “Plastic Piping System Components and Related Materials,” in order to safely convey potable water. 阀门压降计算 Valve Pressure-Loss Calculations 　　为了有助于产品设计，所有Chemtrol阀门都有公布流体流量系数(Cv值)。Cv所定义的流量，单位为加仑/公升，当温度为15oC时， 通过一个阀门时将产生1.0 PSI的压降。 　　As an aid to system design, fluid flow coefficients (Cv values) are shown for all Chemtrol valves. Cv is defined as the flow, in GPM, through a valve which will produce a pressure drop of 1.0 PSI when the medium is water at 60oF. 　　为了确定在给定条件下的压降，下列公式可能有用： 　　To determine the pressure drop for a given condition, the following formula may be used: ΔP = Q2S.G. Cv2 在此 Where ΔP = 通过阀门的压降 psi Pressure drop across the valve in psi Q = 通过阀门的流量 (加仑/分钟) Flow through the valve in gpm S.G. = 液体比重 (水 = 1.0) Specific gravity of the liquid (water = 1.0) Cv = 流体流量系数 Fluid flow coefficient 　　下列一个问题的解法。参阅产品规格说明页中指定阀门的Cv值。 　　The solution of an example problem follows. Refer to the product description page in this Valve Guide for Cv values of specific valves. 例子 Example 　　求通过DN40通径PVC球形止回阀的压降，水流量为50 gpm. 　　Find the pressure drop across a 1 1/2" PVC Ball Check Valve with a water flow rate of 50 gpm. 　　如这个“阀门指南”中的第15页所示，Chemtrol止回阀的Cv值为56， 　　The Cv for the Chemtrol Check Valve is 56, as shown on page 15 of this Valve Guide. ΔP = (50)2x 1.0 (56)2 ΔP = 502 562 ΔP = 0.797 psi

Chemtrol阀门型号编制方法 Key to Chemtrol Valve Figure Number System X XX XX - X - XX - SIZE ① ② ③ ④ ⑤ ⑥ ① 连接端口配置 End Configurations S 承插 Socket G 插口 Spigot F 法兰(实心法兰) Flanged (Solid Flanges) T 螺纹(内螺纹) Threaded (female) M 螺纹(外螺纹) Threaded (male) A 软管 x 外螺纹 Hose x Male Threaded V Van Stone法兰连接端口 Van Stone Flanged End W 对夹式蝶阀 Wafer Style Butterfly U 通用(法门配置承插和螺纹连接端口) Universal (valve furnished with both socket and threaded end connectors) ② 阀体材料 Body Material 45 PVC (符合目录80连接件型号) PVC (conforms to Schedule 80 fitting figure number) 51 CPVC (符合目录80连接件型号) CPVC (conforms to Schedule 80 fitting figure number) 61 黑聚丙烯 (PP) (符合目录80连接件型号) Black Polypropylene (PP) (conforms to Schedule 80 fitting figure number) 62 Chem-Pure天然聚丙烯 (符合目录80连接件型号) Chem-Pure Natural Polypropylene (conforms to Schedule 80 fitting figure number) 65 红Kynar (PVDF) (符合目录80连接件型号) Red Kynar (PVDF) (conforms to Schedule 80 fitting fig. number) 66 天然Kynar (PVDF) (符合目录80连接件型号) Natural Kynar (PVDF) (conforms to Schedule 80 fitting fig. number) ③ 阀门类型 Types of Valves AC 角阀 Angle BC 球阀 Ball Check BF 蝶阀(类型B) Butterfly (Model “B”) BG 蝶阀(类型C) Butterfly (Model "C") CC Chemcock CN 针形阀 Needle D2 分流阀(3通，2位) Diverter (3-Way, 2-Position) FV 球形底阀 Ball Foot HV 水平阀 Horizon M3 多通阀(3通，3位) Multiport (3-Way, 3 Position) SU 球阀 - 单管接头，Tru-Block Ball Valve-Single Union, Tru-Block TB 球阀 - 真管接头，Tru-Bloc Ball Valve–True Union, Tru-Bloc YP Y形阀 Y-Pattern ④ 阀座材料 Seat Materials T TFE (特氟隆) TFE (Teflon) E 三元乙丙橡胶 EPDM V FPM (Viton, Flourel) ⑤ 操作机构 Operating Mechanisms NO 无操作机构 None LH 杠杆手柄，手动 Lever Handle, Manual RH 圆形安全手柄，手动 Round Safety Handle, Manual GO 齿轮操作机构，手动 Gear Operator, Manual ⑥ 通径 Size 描述阀门通径 State Valve Size

不要将本样本中的测试数据用在压缩空气或其它气体上。如果需要关于专用于压缩空气和其它气体的抗龟裂热塑塑料管道系统请参阅Chemtrol Chem-Aire®产品样本。 Do not use or test the products in this catalog with compressed air or other gases. See Chemtrol Chem-Aire® literature for information about shatter-resistant thermoplastic piping systems specifically designed for compressed air and other gases.