What are the benefits of standardization of pipes, fittings, and valves

1. Reduce costs.

Standards are the culmination of years of wisdom and experience of field personnel, and they represent the best, easiest and safest way or method of operation. This leads to the effective implementation of standards, which must effectively improve production efficiency, because improving production efficiency can reduce production consumption or loss, reduce waste, that is, indirectly reduce production costs, and the standardization of product design can directly reduce our production costs. Therefore, the first role of standardization is to reduce costs.

2. Reduce variety.

Change is the enemy of factory management, so to promote standardization is to reduce changes in results by standardizing people's working methods, and the operation of employees in the factory is carried out according to work instructions. According to the work instructions, this is a kind of standardization.

Some factories do not have work instructions, and another approach they take is to let the team leader learn to operate first, and then let the team leader teach the operation methods to the team members, but when there is a personnel change, such as employee sick leave, they can only face the shutdown, and when this situation occurs in the factory that implements standardization, they can find an employee at random and let them perform the work of this process according to the work instructions. That's the benefit of standardization. Therefore, standardization is the most powerful guarantee for good factory management, high efficiency and stable product quality.

3. Convenience and compatibility.

Valves in pipelines (hard-sealed butterfly valves) are selected according to factors such as the type of medium, pressure, temperature and flow rate (or pipe diameter). For example, gate valves and globe valves are only used for fully open and fully closed media of various pipelines and equipment, and are not allowed to throttle, so as to avoid rapid wear of shut-offs and sealing seats.

As the temperature of the same medium changes, so does its pressure, concentration, and corrosion. The maximum allowable working pressure of valves made of gray cast iron, carbon steel and copper at different temperatures is listed in the following table for reference when selecting valves. The maximum working pressure code at a certain temperature in the table:

The number in the lower right corner of the P word is an integer divided by 10 for the medium temperature, and the value in the table is the maximum working pressure at a certain temperature. If the medium temperature is 240, the maximum working pressure is expressed by P24. It can be seen that the carbon steel valve below 200 can be selected according to the nominal pressure; As the temperature increases, the distance between the maximum working pressure and the nominal pressure increases, to 450, and the maximum working pressure is half or more less than the nominal pressure.

Such a large gap must attract the attention of the valve selector, when the temperature is high, do not only look at the nominal pressure, but also must understand the maximum working pressure at the temperature.

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