Not many people have heard of check valves, which are a type of valve widely used in pipeline system software. From the literal meaning, one can roughly distinguish its effectiveness. It can prevent the occurrence of backflow and other situations caused by various reasons in the liquid in the pipeline. At present, there are various product categories for check valves, and the natural environments in which they can be used are also different. There are various types of interlocking insulation sleeves, so it is necessary to use multiple types of insulation sleeves to provide corresponding safety protection. In this article, we will briefly introduce the insulation sleeves for check valves!

Main categories of insulation sleeves for check valves:

1. Internal temperature protection type: maintains the internal temperature of the insulated body, preventing internal heat energy from exchanging heat with the outside (convection, radiation, transfer). Ensure the necessary temperature for production, fully utilize internal heat, and achieve energy-saving goals.

2. Anti external heat radiation type: prevents strong external heat radiation, preventing external heat from being conducted to the insulated part, affecting the normal working temperature of the insulated body, and even damaging equipment, components, instruments, etc.

3. Antifreeze type: prevents external low temperatures from affecting the working temperature of the insulated part. Mainly used for anti freezing of pump bodies, equipment, instruments, and processes. The materials used and the form of insulation sleeves (clothing) for steam pipelines of Dimensity valves are determined according to on-site requirements.

4. Low temperature insulation type: prevents external high temperatures from transferring to the low-temperature insulation zone.

(A) Cold insulation type

(B) Low temperature type (operating temperature below 300 ℃);

(C) Medium temperature type (operating temperature above 300-600 ℃).

(D) High temperature type (operating temperature above 600 ℃).

Design background of check valve insulation sleeve:

The detachable flexible insulation sleeve is similar to a custom-made jacket, usually consisting of three parts: an outer protective layer, an insulation layer, and an inner lining layer. Depending on the size, usage environment, and insulation requirements of various valves, different material combinations can be used to provide valves with a snug, durable, and economical insulation protection. Due to the significant differences in the working environment of various valves, many even have harsh environmental characteristics such as acid and alkali corrosion, high and low temperatures, wind and sun exposure, nuclear magnetic radiation, oil and dust, etc. Therefore, the requirements for materials are very high, and products must be made using materials with international certifications such as FM certification in the United States.

The production process of check valve insulation sleeves also requires a combination of automated equipment, rich experience, and innovative imagination to create products with beautiful appearance, ideal insulation effect, and durability. Currently, most developed valves and other shaped insulation products use this method.

Characteristics of insulation sleeve for check valve:

1. Good insulation effect, high and low temperature resistance (high temperature resistance of 300-2500 ℃, low temperature resistance of -180 ℃)

2. Good chemical stability and resistance to various chemical corrosion; Prevent insect infestation and mold growth.

3. Fireproof and flame retardant (Class A fire-resistant, non flammable, GB8624-2006， German standard DIN4102, Class A1

4. Aging resistance and weather resistance

5. Waterproof and oil resistant: with good hydrophobicity and oil resistance

6. Good insulation effect, the insulation layer adopts heat-resistant fiber insulation blanket, with rich surface feathers (similar to down), and can withstand temperatures of 300-2500 ℃.

7. Easy to disassemble, easy to install, easy to clean pipeline equipment, and convenient for maintenance.

8. Can be reused repeatedly and has a long service life. 4. High strength, both soft and resilient, easy to bend and wrap.

9. Tailored according to the required insulation parts, non-standard products can be processed.

10. Strong adaptability of the product: suitable for pipes and equipment of different temperature ranges and shapes.

11. Environmentally friendly and pollution-free: It does not contain asbestos or any other harmful substances, and is completely harmless to humans and the environment.

12. The product has a beautiful and tidy appearance, and the surface is washable.

13. Improve the working environment and prevent personnel from getting burned.

14. Reduce indoor temperature to facilitate air conditioning cooling and improve environmental comfort.