Adjustable needle valve seat 可调针阀座
pilot needle valve seat 针型导阀座
table needle valve seat 可调针阀座
needle valve seat s cone 针阀体座面
Replaceable valve seat needle valve 可换阀座针阀
needle valve and seat assembly 进油针阀及座总成
A new device for measuring run out error of needle valve seat′s cone surface is proposed. The calculating and estimating methods of the error are also described in the paper.
推出了一种新的针阀体座面圆跳动误差测量装置，介绍了误差的计算与评定方法。
A manual or automatic, conical needle in a seat valve that can be changed to alter the amount of fluid flow through it.
在座阀中的一个手动或自动的锥形针状体。对它进行调节就可改变流过的流体的流量。
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