每个气体调节器包括可密封阀，所述阀限定输入和输出，且每个阀包括具有活塞缸和活塞杆的活塞。

Each gas regulator includes a sealable valve that defines an input and an output, with each valve including a piston having a cylinder and a rod.

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每个气体调节器包括可密封阀，所述阀限定输入和输出，且每个阀包括具有活塞缸和活塞杆的活塞。

Each gas regulator includes a sealable valve that defines an input and an output, with each valve including a piston having a cylinder and a rod.

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