What the Right Methods to Assemble Stainless Steel Valves?

Stainless steel valve assembly is the final stage in the manufacturing process. Stainless steel valve assembly is the process of combining the various parts and components of a stainless steel valve into a product according to the delineated technical premise. The whole machine is the most basic unit for stainless steel valve assembly, and is a component of the stainless steel valve composed of several parts. The assembly process of several parts and components is called component assembly. The assembly work has a great impact on the quality of the product. Even if the design is accurate and the parts are qualified, if the assembly is improper, the stainless steel valve will not meet the specified requirements, and even seal leakage will occur. Therefore, special attention should be paid to the assembly method to ensure the final quality of the stainless steel valve.

Common Assembly Methods for Stainless Steel Valves

There are three common assembly methods for stainless steel valves, namely the complete swap method, repair method and optional method.

1.Complete Swap Method

When the stainless steel valve is assembled using the complete interchange method, each part of the stainless steel valve can be assembled without any trimming and selection, and the assembled product can meet the specified technical requirements. At this time, the stainless steel valve parts must be processed in full accordance with the design requirements to meet the requirements of dimensional accuracy and shape and position tolerances. The advantages of the full interchange method are that the assembly work is simple and economical, the workers do not need a high degree of skill, the production efficiency of the assembly process is high, and it is easy to organize the assembly line and professional production. However, in absolute terms, when a complete replacement assembly is adopted, the machining accuracy of the part is required to be high. It is practically used for stainless steel valves, check ball stainless steel valves and stainless steel valves of medium and small diameters.

2. Optional Method

The stainless steel valve is assembled by the optional method. The whole machine can be processed according to economic accuracy. During assembly, a certain size with adjustment and compensation effects is selected to achieve the specified assembly accuracy. The principle of the matching method is the same as that of the repair method, except that the method of changing the size of the compensation ring is different. The former uses the method of selecting accessories to change the size of the compensation ring, and the latter uses the method of trimming the accessories to change the size of the compensation ring. For example, the top core and adjusting gasket of the double-stainless steel valve wedge gate stainless steel valve of the control valve model, the adjusting gasket between the two bodies of the ball stainless steel valve are the special parts in the dimensional chain related to the assembly accuracy. Adjust the thickness of the gasket to achieve the required assembly accuracy. In order to ensure that the fixed compensating parts can be selected in different situations, a set of washers and shaft compensating parts hydraulic control stainless steel valve models of different thickness sizes need to be manufactured in advance for selection during assembly.

3. Repair Method

If the stainless steel valve is assembled using the repair method, the parts should be processed according to economical accuracy. During assembly, a certain size with adjustment and compensation effect is repaired to achieve the specified assembly goal. Taking the gate and stainless steel valve body of the wedge gate stainless steel valve as an example, because the processing cost required to achieve the interchange is too high, most manufacturers use the repair method. That is, in the final grinding of the sealing surface of the gate sealing surface, the plate should be matched with the opening file size of the stainless steel valve body sealing surface to match the plate to achieve the sealing requirements. Although this method adds the plate matching process, it greatly simplifies the dimensional accuracy requirements of the previous processing steps. The skilled person in the plate matching process is skilled in operation, and generally does not affect the production efficiency.

Hopefully this passage will be helpful for you to learn more about stainless steel valves.