产品指南 - 球阀(2)Product Guide—Ball Valves (2)
PVC和CPVC材料Tru-Bloc球阀True Union和Single Union
PVC and CPVC Tru-Bloc Ball Valves
True Union and Single Union22oC温度下150 psi非冲击性水，全端口(全流道)
150 psi at 73oF water–non-shock–full port
从开发True Union球阀以来，经过不断的测试和改进，已经形成了两种不同型号的阀门。True Union原先的结构是采用滑入阀体光滑的阀腔内阀座支架，而不是直接在阀体内固定。因此，在调节管接螺母的紧固度时，阀座对球体的压力就一直存在着。
As a result of continuous testing and improvements since the inception of the True Union Ball Valve, two distinct model changes have occurred. The original True Union design had a seat-carrier that slid into the smooth bore of the valve body, but it was not directly retained within the body. Thus, by adjusting the tightness of the union nut, the squeeze of the seats against the ball would be maintained.
True Union球阀的第一次重大改进是型号B，引进了Tru-Bloc的设计理念，一种更加安全的性能。在这种设计结构下，采用通过螺纹固定在阀体的挡圈将阀座支架间接的固定在阀体内。在拆卸阀门的可“调节”端口的管接螺母和端口连接件时，这种改进消除了另一个端口的压力将内部部件和流体介质从阀门开口端口处吹出导致维修技工伤害或破坏周围设备的可能性。
The first major evolution to the True Union Ball Valve, Model-B, introduced the Tru-Bloc concept, a functional safety feature. With this design the seat carrier was indirectly held within the valve body by means of a retainer ring, which was attached to the inside of the body by threads. Should the union nut and end connector on the “adjust” side of the valve be removed, this change negates the possibility that pressure on the other side could blow the internal components and fluid medium out of the open valve end to injure the service mechanic and/or surrounding equipment.
现在的设计改进，型号C，保留了传统的True Union特点和Tru-Bloc设计理念。现在，一件式阀座支架用螺丝直接固定在阀体内，不再需要挡圈了。因此也不再需要准备外置阀座调节装置，因为位于阀座底下的凹槽的O形环，已经加进这种新式阀座支架。这种O形环槽的形状避免了在组装阀门期间，橡胶受到过度压力而损坏。此外，还可以通过阀座增能器的减压来自动调整阀座的磨损。
The current design evolution, Model-C, retains the traditional True Union feature and the Tru-Bloc concept. Now, a one-piece seat-carrier is screwed directly into the valve body, eliminating the need of a retainer ring. The provision for external seat adjustment is no longer required because an Oring, located in a groove beneath the seat, has been added to the new seat carrier. The shape of the O-ring groove prevents damage to the rubber from excessive compression during assembly of the valve. Yet automatic adjustment for seat wear can result from decompression of the seat energizer.
特点
Features
[*]三十多年来，这种阀门的三种不同型号阀体的长度和连接到阀体上的强力改进型顶点螺纹一直没有改变。这使得肮脏的阀门更换件可以配置新的阀体，并且可以与旧的管接螺母相配套。不需要改变管道的长度。
The laying length of the body and the heavy-duty modified-acme threads in the union connections to the body have not changed in the three distinct models’ 30-year history of the valve. This permits fouled valve replacement with a new body cartridge, which will fit the old union nuts. No change in piping length is required. [*]型号C的结构确保阀座后侧周围不会出现泄漏。在安装和测试Chemtrol的Tru-Bloc关闭阀门以后，连接到满罐的开口管道上将不会开始滴漏。
Model-C design features ensure no leakage around the back-side of the seats. Open piping attached to a filled tank will not start to drip-leak following installation and test of a Chemtrol Tru-Bloc shut-off valve.[*]型号C的结构，在阀座支架下配置一个增能器O形环，使得这种阀门能够针对阀座磨损情况进行自动调整。在工厂组装期间，采用机械设备对阀座和阀门测试封装挤压进行调整。在安装期间，手动紧固管接螺母用来压紧Chemtrol阀门的表面密封。
Model-C design, with an energizer O-ring beneath the seat-carrier, enables the valve to automatically adjust for seat wear. Adjustments for envelope squeeze on seats and valve testing are done by machine during factory assembly. Upon installation, a hand-tightened union nut serves to compress the face-seal of a Chemtrol valve.[*]全端口(全流道)结构产品使得流体限制降到最小，可能的压降也降到最小。
Full port design produces minimum flow restriction with the lowest possible pressure-drop.[*]阀门在制造和组装过程中，没有暴露在含硅酮的环境中。
Valves are manufactured and assembled without exposure to silicone compounds.[*]独特的橙色手柄可以远距离指示“启闭”和流体方向。手柄顶部模铸的箭头指示旋转方向，使得操作人员容易在90o角内操作。由于实际应用中有时需要拆卸手柄，D形环阀杆平面指示“启闭”状态，阀杆顶部的模铸箭头指示流体方向。
Distinctive orange handle indicates “open/close” and direction of flow at a distance. And molded-in arrows on top of the handle dictate rotational direction to personnel for easy operation within 90o stops. For applications requiring handle removal, the D-ring stem flats indicate "open/close" and a molded-in arrow on top of the stem indicates flow direction.[*]参阅Chemtrol阀门执行机构指南，选择电动或气动执行机构及附件，包括用于阀门现场安装或工厂组装的塑料外壳和塑料安装组件。
Refer to the Chemtrol Valve Actuation Guide for full selection of electrical and pneumatic actuators with accessories, including plastic housings and plastic mounting kits for field or factory assembly to valves.注意：
Notes
参阅第2页的“部件材料清单”。如果需要了解更多的材料选择，请参阅第1页的“材料”。适用于球阀的“执行机构安装参数”和“备选附件”的完整清单请参阅第21页及以后的内容。这些阀门的“安装和维护指南”内容在第8页。如果需要额定压力-温度的特殊关系，请参阅第33页的“工程技术参数”。如果需要“Chemtrol阀门标准”，请参阅第35页。
See page 2 for a list of Components and Construction Materials. For more insight into the selection of materials, refer to Materials, page 1. Actuation Mounting Data and a complete listing of Optional Accessories for ball valves begins on page 21. Installation and Maintenance Instructions for these valves appear on page 8. For specific relationships of pressure vs. temperature ratings, refer to Engineering Data, page 33. For Chemtrol Valve Standards, see page 35.
http://www.h6688.com/valve/nibco/040531/16/img/030_1.jpg Chemtrol型号
Chemtrol Figure Number
阀门
类型
Valve
Style弹性材料
阀内件
Elasto-
meric
TrimPVCCPVC承插
Soc.螺纹†
Thd.†法兰
Flgd.承插
Soc.螺纹†
Thd.†法兰
Flgd.TUFPMU45TB-V*
EPDM
U45TB-E* U45TB-V*
U45TB-E*F45TB-V
F45TB-EU51TB-V*
U51TB-E*U51TB-V*
F51TB-EF51TB-V
F51TB-VSUFPMS45SU-V
EPDMT45SU-V
S45SU-EF45SU-V
T45SU-ES51SU-V
F45SU-ET51SU-V
S51SU-EF51SU-V
T51SU-EF51SU-E* 作为原创设备，DN15 - DN50通径的True Union Tru-Bloc阀门型号配置通用的连接端口(即，一套承插和螺纹端口连接件)。对于DN80 - DN150通径，在型号中分别用S或T替代U来表示承插或螺纹型号，作为对所有SU型号的要求。
* As original equipment, 1/2" - 2" True Union Tru-Bloc valve models are supplied with universal connectors (i.e., a set of both socket and thread end connectors). For 3" - 6" sizes, replace U in the Fig. No. with "S" or "T" for Soc. or Thd. models respectively, as required for all SU models.
† DN150阀门不配置螺纹连接端口。
† Thread end connections are not available for 6" valves.
尺寸-重量-流量系数
Dimensions–Weights–Flow Coefficients
TU和SU型号外形
TU & SU Figures ProfileTU型号，端到端
(DN15至DN150)
TU Figures End-to-End
(1/2" thru 6")SU型号，端到端
(DN15至DN50)
SU Figures End-to-End
(1/2" thru 2")流体流量
系数
Fluid Flow
Coefficient阀门通径
Valve
SizeA1BCDNPE
螺纹
Thd. F
承插
Soc. G
承插
Soc. H
法兰
Flgd. 大致2
重量(磅)
Approx.2
Wt. Lbs.J
螺纹
Thd. K
承插
Soc. L
承插
Soc. M
法兰
Flgd. 大致2
重量(磅)
Approx.2
Wt. Lbs.Cv3
TU
SU1/21.701.942.000.502.983.504.004.192.416.190.483.383.751.975.600.3222243/42.122.502.440.753.633.884.635.002.977.250.863.934.502.476.990.58556112.122.692.861.004.134.265.185.503.228.061.234.614.932.657.490.801121251-1/42.563.744.081.254.704.626.106.473.949.502.645.446.003.479.161.741781941-1/22.563.744.081.504.985.006.156.763.9810.002.805.446.253.479.411.8228531022.924.255.252.005.786.007.378.014.9811.385.377.137.504.4710.903.6754057734.005.597.183.007.427.5010.3910.396.5814.6311.25 1348 48.006.058.784.008.529.0012.2212.227.6617.6317.68 2602 68.006.058.784.0011.9011.05NA30.2224.1624.0829.25 2602 [*]手柄并不是关于中心线对称。表中的尺寸表示最大操作半径。对于DN15 - DN80通径的True Union阀门，手柄位置能够正确表示启闭程度。但是对于DN15 - DN50通径的Single Union阀门和DN100 - DN150通径的True Union阀门，其启闭程度必须从显示的位置上旋转180o .
Handle is not symmetrical about centerline. Dimensions shown represent the longest operational radius. The handle position is correctly shown for the 1/2" - 3" True Union valve style, but the position must be rotated 180o from that shown for the 1/2" - 2" Single Union valve style and the 4" - 6" True Unions.[*]DN15 - DN50通径的TU型号阀门的重量包括两种连接件，而DN80 - DN150通径的阀门只有承插端口连接件。在所有情况下，所表示的材料是PVC.
Weight for 1/2" - 2" TU figures includes both sets of end connectors or soc. end connections only for 3" - 6" sizes. Weight for SU figures is for soc. end connections. The material represented is PVC in all cases. [*]Cv值根据基本阀门铺设长度计算(G和L).
Cv values computed for basic valve laying lengths (G & L).[*]DN150阀门采用溶剂粘接将法兰或承插连接到配置同心缩径管道接头具有平端DN100通径的TU阀门上。不提供螺纹连接的型号。
The 6" valve is fabricated by solvent cementing either flange of socket couplings onto the ends of a 4" TU valve with plain-end concentric reducer pipe nipples. Threaded figure not available.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.
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