标准配置为机加工黄铜结构，镀铬镍阀体，乙丙橡胶止回阀瓣总成和丁钠橡胶密封，不锈钢弹簧和压力板。
Machined brass construction, chrome nickel plated body, EPR rubber check disc assemblies and Buna 'n' seals, stainless steel springs and pressure plates are standard.
松开印把时，压力弹簧复位，驱动板再次通过驱动滑槽推动主动记数环继续转动。
After the seal handle is released, the pressure spring will reset and the driving counting ring driven by the driving board will rotate further.
压下印把时，压力弹簧被压缩，驱动板通过主动记数环上的驱动滑槽推动主动记数环转动。
When the seal handle is pressed down, the pressure spring will be compressed, and the driving counting ring will be driven to rotate by the driving board.
其阀板采用对偶板上加两个扭力弹簧的设计，可使阀板在压力范围内自行开闭。
Its design two torque springs on the double disks which are closed by torque springs in the scope of pressure.
其阀板采用对偶板上加两个扭力弹簧的设计，可使阀板在压力范围内自行开闭。
Its design two torque springs on the double disks which are closed by torque springs in the scope of pressure.
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