The bonnet and packing box of low temperature service instrument in-line valves shall be extended bonnet type or heat traced, if necessary, to avoid freezing of valve stems.

低温设备仪表在线阀门的阀帽和填料箱应为加长阀帽型或伴热型(必要时)，从而避免阀杆结冰。

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This would include in-line instrumentation, flow meters, regulating valves ultraviolet lights, pumps, pump seals, filter membranes, gasket and seal materials, and other specialized in-line devices.

该项包括在线仪器、流量计、调节阀、紫外光、泵、泵的密封件、过滤膜、垫圈和密封材料以及其他特殊的在线设备。

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Red Valve's complete product line of Pressure Sensors and Pinch Valves are designed to meet our customer's exact flow requirements and specific applications.

美国红阀公司完整的压力传感器和夹管阀产品系列，能够满足用户的精确流体控制和特殊应用的要求。

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The goal of the hearings is to examine the design and performance of the drilling rig's blowout preventer, a mammoth set of valves that is the last line of defense against an oil spill.

WSJ: Transocean Cites Safety in Bonuses

Depending on the call, Perrine's bass strings and brass valves either anchored the deep bottom line or paraded the carnival second line.

NPR: Danza Quartet Welcomes 2009, Bayou Style