There are many materials used for ventilation ducts, but the two

There are the following 6 types of air duct fittings

The main function of ventilation ducts is to circulate the

Air conditioner, as an essential household appliance, has served us

Advantage More comfortable     In addition to the air supply

Polyvinyl chloride is a versatile material. It can be as

1. Density method: examine the density of various plastics, use

Plastic pipes are generally made of synthetic resin, that is,

Air conditioner, a kind of air conditioning system. A finalized

Since the self-operated pressure regulating valve does not require other

1. Eliminate stress. Various stresses caused by improper installation or

Units that have not yet carried out predictive maintenance of

1. Routine maintenance work content of control valve The daily

According to the characteristics of the stroke, the regulating valve

Regulating valve is also known as control valve. In the

1. The single-seat control valve has a valve core and

1. Cleaning method: Welding slag, rust, slag, etc. in the

(1) Equal percentage (logarithm) Equal percentage relative stroke and relative

1. The selection and layout of replacement vents should be

1. Check the mechanical properties of the tuyere before installation.

When the diffuser is horizontally fed, it should be arranged

The role of the exhaust fan 1. The exhaust fan

First of all, thoroughly clean the roof to be repaired,

They each have their own advantages, and here are some

Medium-efficiency filter replacement cycle and when it is better to

First, the working principle of the bathroom exhaust fan In

Ventilation ducts play a very important role and position in the

Ventilation ducts that can be seen everywhere in daily life

Widely used in refrigerators, air conditioning, automobiles, petrochemicals, bridges, hotels,

The scope of application of spiral duct is very wide.

Spiral air duct is a thin-walled tube made of metal

1. HDPE pipe HDPE pipes have become a popular replacement

1. Bonding method: Mainly used for the connection of hard

(1) In the current construction and installation projects, most of

With the improvement of people's living standards, environmental protection awareness

Among non-metallic pipes, plastic pipes are the most widely used.

1) The installation position, height, and direction of inlet and

The regulating valve is used to regulate the flow, pressure

1. If it is a pressure regulating valve, the feedback

(1) The regulating valve is a field instrument. The ambient

According to the structure and function of the self-operated control

The regulating valve is a field instrument. The ambient temperature

(1) The control valve does not operate. Reasons: there is

1) The method of increasing the stiffness can increase the