This standard specifies the type, size and technical requirements for liquid-filled tanks. This standard applies to tanks for liquid-filled systems with a nominal pressure of 1.6MPa. For the convenience of layout, liquid-filled tanks with a volume of 1.5 to 16m3 are divided into left and right types according to the different connecting pipes of the liquid-filled pipes; liquid-filled tanks with a volume of 20 to 32m3 are divided into different types according to the connecting pipes. Each gear is divided into left and right types. When two tanks are used in parallel, the P-direction flange cover on the upper part of the tank in Figure 3 must be removed and connected to the air pipe. The flange cover on the lower connecting pipe must be removed and connected to the water pipe. The size of the water pipe flange is the same as in Figure 3A-direction. Fluid filled pipe flanges are the same size.