DN100和DN150蝶阀的阀体、阀瓣/阀杆和节流板是PVC。DN80蝶阀的部件是CPVC。
22oC温度下压力为150 psi，非冲击性水(DN150为115 psi)
4" & 6" Body, Disk/Stem and
Throttle Plate are PVC. 3" components are CPVC.
150 psi at 73oF water–non-shock (6" size 115 psi)
型号B是适用于化工领域的最好的蝶阀。阀瓣和阀杆护层都是模压在316不锈钢六角轴上形成一件式组合结构，使得金属轴从头到尾暴露在流体介质中变得不可能。上部和下部的TFE轴承衬套经过硬化，在保护层模压时嵌入到阀座/护层内，从而使得护层和衬套之间的泄漏变得不可能。双重O形环密封槽经过机加工嵌入在保护塑料的阀杆护层内，防止多余的阀杆泄漏进入上部和下部衬套地连接位置中。由于这些阀杆密封支撑靠着TFE衬套旋转，所以显示这些密封外部磨损导致的阀门外壳泄漏实际上就没有再发生。
The Model-B is the best butterfly valve
for chemical applications. The disk and stem sheath are molded over
a 316 stainless hex shaft to make a one-piece assembly, making it
impossible for the metal shaft to be ex-posed to the fluid medium
over its full length of top and bottom stem. The upper and lower
TFE bearing-bushings are vulcanized to the seat/boot as the boot
is molded, making leakage between the boot and bushings impossible.
The grooves for double Oring seals are machined in the stem sheath
of protective plastic for redundant stem leakage protection in conjunction
with both the upper and lower bushings. Since these back-up stem
seals rotate against the TFE bushings, valve shell leakage, indicating
wear on the outside of these seals, is virtually unreported.
特点
Features
- 可配置在符合下列标准的法兰之间：ANSI B 16.5, 150磅级；ISO 2084 PN 10, DN80；和DIN
2532, PN 10, DN80. DN80通径具有4螺栓和8螺栓两种模式。
Mates between ANSI B 16.5, Class 150; ISO
2084 PN 10, DN 80; and DIN 2532, PN 10, DN 80. Both 4-bolt and
8-bolt patterns are in 3" size.
- 设计独特的“干燥轴密封” - 液体绝对不会接触到轴。
Unique "dry shaft seal" – liquid
never contacts shaft.
- 顶部轴承，以及上部轴承和底部轴承，是玻璃纤维填充TFE材料，用于使得操作更加容易，并最大限度延长使用寿命。
Top bearing, as well as the upper and lower
bushings, are glass-filled TFE for ease of operation and maximum
service life.
- 阀座/护层结构消除了对接法兰之间的密封垫的需求。
Seat/boot design eliminates need for gaskets
between mating flanges.
- 选择FPM或EPDM阀座和密封，以满足耐多种化学物质/水服饰的应用要求。配置FPM阀内件的阀门，已经成功应用于氯消毒和漂白剂喷射等领域。
Selection of FPM or EPDM seat and seals
offers resistance to diverse chemical/water applications. With
FPM trim, valves have been notably successful in the disinfection
services of chlorine and bleach injection.
- 可提供用于过高或地下系统的人工操作，以及其它特殊需要的附件。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。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. Mounting kits are available for field or factory
assembly.
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.
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