注意：在泵排泄口，首选的止回阀是管内弹簧负载，带杠杆和压铁或杠杆和弹簧的旋启式止回阀。

Note: On pump discharge, the preferred check valves are an in-line spring loaded, swing design with lever and weight or lever and spring.

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初期用的压力注射器是杠杆、弹簧加压式注射器。

The initial period USES the pressure injector is the release lever, the spring pressurizes the type injector.

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注意：在泵的排泄口处，首选的止回阀是管内弹簧负载，旋启式，配置杠杆和重量或杠杆和弹簧。

Note: on pump discharge, the preferred check valves are an in - line spring loaded, swing design with lever and weight or lever and spring.

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