Open needle valve " a " high side and vent needle valve to vent air from bypass hose 开启针形阀“ a ”高端和排气针形阀，从旁路软管排放空气。
Connect bypass hose between vent needle valve and loosely connect to test cock no . 1 在排气针形阀上连接旁路软管，并将其松散连接到测试旋塞1号上。
Needle valves shall have predictable flow patterns with ( 8 ) molded in increments on the body 针形阀应该在阀体上具有8个增量模式的可预测流量标记。
The fig . 1710 balancing valve is a non - rising stem design incorporating a parabolic ( plug ) shaped disc 型号1710平衡阀为暗杆结构，配置抛物线(塞)形阀瓣。
Valves are also furnished with solid wedge discs that have proved successful in millions of applications 这种阀门也配置实心楔形阀瓣，并经过几百万个实际应用的成功考验。
Industrial - process control valves - dimensions - face - to - face dimensions for rotary control valves except butterfly valves 工业过程控制阀.尺寸.蝶形阀除外的转式控制阀端面距
Industrial - process control valves - part 3 - 2 : dimensions ; face - to - face dimensions for rotary control valves except butterfly valves 工业过程控制阀.第3 - 2部分:尺寸.蝶形阀除外的转式控制阀的端面距
A complete list of replacement components can be found on the preceding page . bonnet assemblies and seals are interchangeable between angle and y - pattern valve bodies 更换部件的完整清单可以在前一页找到。阀帽组件和密封在角形和y形阀体之间可以互换。
Install a needle valve in the control line . if uneven pressure should cause the regulator to pulsate , its action can be stabilized by throttling the valve 在控制管线上安装一个针形阀。如果不稳定的压力导致调节阀波动，则这种波动通过对阀门节流将稳定下来。
Install a needle valve in the control line . if uneven pressure should cause the regulator to pulsate , its action can be stabilized by throttling the valve 在控制管线上安装一个针形阀。如果压力不均匀，则将导致调节阀波动。可以通过对阀门进行节流来稳定这种波动。
