航空论坛_航空翻译_民航英语翻译_飞行翻译

标题: 产品指南 - 蝶阀(2)Product Guide—Butterfly Valves (2) [打印本页]

作者: 帅哥 时间: 2009-11-20 12:44:28 标题: 产品指南 - 蝶阀(2)Product Guide—Butterfly Valves (2)

PVC蝶阀 - 型号C
PVC Butterfly Valves–Model-C

22oC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.

流量系数表
Cv Table

开启度 Degrees Open
通径 Size	10o	20o	30o	40o	50o	60o	70o	80o	90o
2	2.5	8	18	33	50	73	100	131	166
2-1/2	3.7	12	27	49	74	109	148	195	247
3	4.3	16	35	62	94	135	180	235	290
4	8.6	34	76	137	215	310	420	550	690
6	17.5	67	200	265	410	580	790	1040	1340
8	20.8	83	190	320	530	770	1060	1380	1780
10	50.0	195	430	775	1200	1775	2700	3100	4000

注意：
Notes
　　这些阀门的“安装和维护指南”在第12页。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。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。
　　Installation and Maintenance Instructions for these valves appear on page 12. For more insight into the selection of materials, refer to Materials, page 1. Actuation Mounting Data for butterfly valves may be found on page 21, followed by a complete listing of Valve Accessories. For the specific relationships of pressure vs. temperature ratings, refer to Engineering Data, page 33. For Chemtrol Valve Standards, see page 35.

结构
Construction

序 No.	部件 Part	材料 Material
1.	上部阀杆 Upper Stem	416不锈钢 416 Stainless Steel
2.	上部衬套 Upper Bushing	玻璃纤维填充PTFE (特氟隆) Glass-Filled PTFE (Teflon)
3.	O形环阀杆密封 (需要2件) O-Ring Stem Seal (2 required)	三元乙丙橡胶 - 上部和下部阀杆 EPDM – Upper and Lower Stem
4.	阀体 Body	PVC
5.	阀瓣 Disk	三元乙丙橡胶塑封黄铜 EPDM Encapsulated Brass
6.	下部衬套 Lower Bushing	玻璃纤维填充PTFE (特氟隆) Glass-Filled PTFE (Teflon)
7.	下部阀杆 Lower Stem	416不锈钢 416 Stainless Steel
8.	塞 Plug	低密度聚乙烯(聚乙烯) LDPE (Polyethylene)
9.	O形环端面密封 (需要2件) O-Ring Face-Seal (2 required)	三元乙丙橡胶 EPDM
10.	卡环(需要2件) Snap Ring (2 required)	镀锌钢 Zinc Plated Steel
11.	杠杆手柄总成 Lever Handle Assembly
	手柄，配置杠杆锁 Handle w/Lever Lock	可锻铸铁 Malleable Iron
	节流板 Throttling Plate	镀锌钢 Zinc Plated Steel
	位置锁 Position Lock	镀锌钢 Zinc Plated Steel

Chemtrol型号
Chemtrol Figure Numbers

阀杆材料 Disk Material	操作机构 Operating Mechanism	DN50 - DN250型号1 2" – 10" Figure No.1
三元乙丙橡胶 EPDM	杠杆手柄2 Lever Handle2	W45BG-E-3
三元乙丙橡胶 EPDM	齿轮操作机构 Gear Operator	W45BG-E-5

DN250阀门只能配置齿轮操作机构。
10" is available with gear operator only.
包括节流板和锁。
Includes throttle plate and lock.

尺寸 - 重量
Dimensions–Weights

阀门通径 Valve Size	A	B	C	D	E	F	G	H	I	J	K	L	手柄 Handle			大致1 重量/磅 Approx.1 Wt./lbs.
英寸 In.	A	B	C	D	E	F	G	H	I	J	K	L	M	N	P	大致1 重量/磅 Approx.1 Wt./lbs.
2	1.94	1.69	6.41	1.25	3.94	3.29	3.25	2.75	0.44	3.26	0.37	0.50	10.50	1.01	6.19	2.02
2-1/2	2.44	1.81	7.19	1.25	4.13	3.63	3.25	2.75	0.44	3.26	0.37	0.50	10.50	1.01	6.19	2.56
3	2.87	1.81	7.75	1.15	4.43	3.91	3.25	2.75	0.44	3.26	0.37	0.50	10.50	1.01	6.19	2.92
4	3.82	2.06	9.08	1.25	5.31	4.57	3.25	2.75	0.44	3.26	0.50	0.65	10.50	1.01	6.19	5.04
6	5.76	2.20	11.22	1.25	7.09	5.64	3.25	2.75	0.44	3.26	0.56	0.78	13.75	1.01	6.19	8.99
8	7.74	2.36	13.66	1.25	8.00	6.83	3.25	2.75	0.44	3.26	0.56	0.78	13.75	1.01	6.19	14.27
10	9.57	2.68	16.49	1.25	9.84	8.40	5.00	4.01	0.56	4.76	0.74	1.06	只能采用齿轮操作机构 Gear Operator Only			27.70

1 重量中不包括操作机构。
1 Operator not included in weight.

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.

欢迎光临航空论坛_航空翻译_民航英语翻译_飞行翻译 (http://bbs.aero.cn/)