Cold start atmospheric valve for compressor

The utility model relates to a cold start atmospheric valve for compressor, including valve body and valve rod, the valve rod along the axle arrangement in the valve body, the lower extreme of valve body be the air inlet, the valve body arranged path hole and big hole about in, the valve rod outside that is located the downthehole part of path cup jointed the spring, the lower extreme of valve rodalong radially having arranged the extension board, the outside of the valve rod top that is located big hole install O shape sealing washer, the bead of air inlet be varus riveting portion, the internal diameter of this riveting portion is less than the external diameter of extension board. The utility model discloses can solve that original atmospheric valve pressure value is unstable, the retaining ring easily drops and rust and the problem that appears the leakage under highly compressed condition is being closed to the valve. 本实用新型涉及种压缩机用冷启动放空阀，包括阀体和阀杆，所述的阀杆沿轴向布置在阀体内，所述的阀体的下端为进气口，所述的阀体内上下布置有小径孔和大径孔，所述的阀杆位于小径孔内的部