螺纹轴环衬套有助于阀杆的牢固(防吹出保护)
* Threaded Collar Bushing for
positive stem retention (blowout proof)

阀体和阀杆O形密封环，材料为三元乙丙橡胶，丁钠橡胶(腈)或氟橡胶。
Body and Stem O-ring Seals of EPDM, Buna-N or Fluorocarbon.

加长杆颈，用于保温隔热，长度达50mm。
Extended Neck for insulation up to 2".

模制衬垫，完全由阀体支撑在法兰密封上。避免阀体和内腔衬垫或靴形衬垫之间可能出现的泄漏。具有截断功能，不需要在出口端加装法兰。
Molded-in Liner fully supported by valve body at flange seals. Eliminates leakage between body and liner as in cartridge or boot type liners. Provides deadend service without the need for a flange on the downstream side.

* 在阀门处于压力负载下，不需要拆卸轴环衬套。
* Do not remove collar bushing
with valve under pressure.

高强度阀杆材料，具有整体贯穿阀瓣结构。
High-Strength Stem materials with one-piece thru-disc design.

上部和下部衬套对于阀门顺利操作是标准配置。
Upper and Lower Bushings are standard for smooth valve operation.

流线型球面阀瓣，具有很高的流量系数。
Streamlined Spherical Disc with high flow capacity.

内部阀杆/阀瓣驱动，避免了安装可能产生更多泄漏途径、水路内湍流或流量减少的销钉或螺栓。
Internal Stem/Disc Drive eliminates the need for pins or bolts which create additional leak paths, turbulence in the waterway or flow reduction.

球墨铸铁阀体比铸铁更加坚固耐用(降低损坏率)。
Ductile Iron Body more durable than cast iron (reduces breakage).

“盲孔”比衬套位置更低，有利于防止泄露。
“Blind-Hole” lower bushing prevents leakage.

　　高压弹性密封蝶阀特性：
　　A High-Pressure Resilient-Seated Butterfly Valve Featuring:

• 额定压力高达250 PSI，真空高达71毫米高汞柱
  Pressure rating to 250 PSI, Vacuum to 28" Mercury
• 满足用户需求的广泛的材料选择
  Wide choice of materials to suit customer’s application
• 完全压力负载下的气密性关闭
  Bubble-tight shutoff at full pressure rating
• 200 PSI截断功能，不需要安装下游法兰。
  Dead-end service at 200 PSI, no down-stream flange required

　　操作机构
　　裸杆，杠杆锁定流量控制手柄，蜗轮操作机构，电动和气动执行机构
　　Operation
　　Bare shaft, lever-lock flow control handle, worm gear operator, electric and pneumatic actuators

　　阀体类型
　　可钻孔的全凸耳或对夹式。
　　Body Styles
　　Tapped full lug or wafer