译文：
压力为P1的压缩空气，由左端输入经阀口10节流后，压力降为P2输出。P2的大小可由调压弹簧2、3进行调节。顺时针旋转旋钮1，压缩弹簧2、3及膜片5使阀芯8下移，增大阀口10的开度使P2增大。若反时针旋转旋钮1，阀口10的开度减小，P2随之减小。 若P1瞬时升高，P2将随之升高，使膜片气室6内压力升高，在膜片5上产生的推力相应增大，此推力破坏了原来力的平衡，使膜片5向上移动，有少部分气流经溢流孔12、排气孔11排出。在膜片上移的同时，因复位弹簧9的作用，使阀芯8也向上移动，关小进气阀口10，节流作用加大，使输出压力下降，直至达到新的平衡为止，输出压力基本又回到原来值。若输入压力瞬时下降，输出压力也下降、膜片5下移，阀芯8随之下移，进气阀口10开大，节流作用减小，使输出压力也基本回到原来值。 逆时针旋转旋钮1。使调节弹簧2、3放松，气体作用在膜片5上的推力大于调压弹簧的作用力，膜片向上曲，靠复位弹簧的作用关闭进气阀口10。再旋转旋钮1，进气阀芯8的顶端与溢流阀座4将脱开，膜片气室6中的压缩空气便经溢流孔12、排气孔11排出，使阀处于无输出状态。 总之，溢流减压阀是靠进气口的节流作用减压，靠膜片上力的平衡作用和溢流孔的溢流作用稳压；调节弹簧即可使输出压力在一定范围内改变。为防止以上溢流式减压阀徘出少量气体对周围环境的污染，可采用不带溢流阀的减压阀(即普通减压阀)。

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原文：
P1, compressed air pressure from the left input port 10 through the throttle valve, the pressure reduced to P2 output. The size of P2 can be adjusted regulator springs 2,3. Knob clockwise 1, compression springs 2,3 and diaphragm 5 so that spool 8 down, increasing the valve port 10 of the opening so that P2 increased. If the counter-clockwise rotation knob 1, the opening degree of valve port 10 decreases, P2 decreases. If the P1 instantaneous rise, P2 will subsequently be increased, so that the pressure within the diaphragm chamber 6 increases, the diaphragm 5 to generate a corresponding increase in thrust, the thrust force destroyed the balance of the original, so that diaphragm 5 upwards Mobile, a small part of the air flow through the overflow hole 12, exhaust vent 11. In the diaphragm, while on the move, because the role of the reset spring 9, so that spool 8 is also moving up, off the small intake valve port 10, cutting the role of increased, so that the output pressure drops until it reaches a new balance date, the output pressure back to the original value of the fundamental. If the input pressure transient drop in output pressure also fell, down 5 diaphragm, spool 8 followed down, intake valve port 10 to open large role in reducing the throttle, so that the output pressure is basically back to the original value. Counterclockwise rotation knob 1. 2,3 relaxing spring to regulate the gas acting on the thrust on the diaphragm 5 is greater than the spring force surge, patch up the music, by reduction of the role of the spring off the intake valve port 10. And then rotate knob 1, the top of the intake valve core 8 and the relief valve seat 4 would be torn off and the diaphragm air chamber 6 in the compressed air will be through the overflow hole 12, exhaust vent 11, so that valve in the non-output state. In short, the overflow valve is the inlet throttling by the role of decompression, the balance of forces on the diaphragm by the role and the role of regulator overflow overflow hole; adjust the output pressure spring can be within a certain range to change. In order to prevent overflow or above out of a small amount of gas pressure reducing valve irresolute on the surrounding environment, pollution, can be used without the relief valve of the valve (ie, normal pressure reducing valve).