Threaded seat rings are easily accessible for repair or replacement. Packing swing bolts on most valves simplify packing replacement. All Pacific bolted bonnet designs facilitate fast disassembly.

• 螺纹阀座环易于接近进行维修或更换。大多数阀门上的填料旋启式螺栓简化了填料的更换。所有美国太平洋螺栓阀盖结构使得拆卸更加迅速。