... 阀座接触面 contact surface of valve seat 阀座口径 seat diameter 阀座漏泄密封性试验 seat leaktest ...
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spring seat diameter 弹簧座直径
valve seat diameter 针阀座面直径
Housing seat diameter 箱体座直径
The Valve Seat Diameter 阀门阀座直径
valve seat-diameter ratio 针阀座面
bead diameter at rim seat [橡胶] 胎圈着合直径
internal bunching diameter of seat 气门座内径
small-diameter hole seat 小口径孔座
diameter at rim seat 轮辋着合直径
If the valve seat diameter is not known, the port diameter can be assumed to be the seat diameter for estimating purposes.
阀门阀座直径。如果不知道阀门阀座的直径，则可以将端口直径作为阀座直径进行估算。
The outside diameter, outer ring width and shaft seat diameter are identical to the dimensions of the standard spherical roller bearings range.
外部直径，外圈的宽度和轴座直径相同的尺寸标准的球面滚子轴承范围。
Note: the seats and springs of the first and second check modules are not interchangeable. The heavier spring and smaller diameter seat belong with the first check module.
注：第一和第二止回阀模块的阀座和弹簧是不可互换的。较重的弹簧和较小直径的阀座属于第一止回阀模块。
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