PEEK valve plate

PEEK compressor valve plate

Valve plates made of PEEK can greatly improve the efficiency and reliability of reciprocating compressors. In natural gas compressors, valve plates made of PEEK 5600GF30 can operate continuously for up to 12 months, while steel plates usually break after about a month.

In the complex structure of a reciprocating compressor, the valve plate undoubtedly plays a vital role. It is called the “heart” of the compressor and can directly affect its efficiency and reliability. . When using steel (which significantly shortens service life), if the valve plate breaks, the steel fragments can cause serious damage to the cylinder, piston and piston rings. The use of PEEK valve discs will avoid future losses of such assets and significantly increase added value for end users such as the oil and gas industry or fertilizer production plants by reducing downtime and related costs.

In addition to significantly extending service life, PEEK valve discs also save energy during the opening and closing processes. This is due to its better wear characteristics, surface fit, elasticity and sealing, which reduces airflow losses. This type of polymer valve also produces less noise than steel.

The compressor plastic valve is made of polyetheretherketone (PEEK) as the base material, and various auxiliary materials are added according to the user’s needs through granulation, injection molding, and machining. It has nine major advantages:

1. High temperature resistance: The long-term use temperature of PEEK is 260°C, and the normal operating temperature of the valve can reach over 200°C.

2. High pressure resistance (pressure difference): The working pressure difference of the valve can reach more than 15MPa.

3. High wear resistance: The plastic valve plate has low density and light weight in the same volume. When the reciprocating compressor is working, the impact force is reduced, the resulting fatigue damage is reduced, and the life of the valve is extended.

4. Strong corrosion resistance: resistant to all media except oxygen, chlorine and concentrated sulfuric acid.

5. Low noise: It can absorb part of the impact energy and reduce noise.

6. Good sealing and high efficiency: At the operating temperature, the sealing surface of the PEEK valve plate has a self-adjusting function, which can automatically complete fine-tuning the shape of the contact surface within 24 hours, so that the sealing effect is the best and the compressor can achieve the best sealing effect in the shortest time. High compression efficiency.

7. Low energy consumption: With the improvement of sealing, the power consumption and temperature rise of the compressor are reduced simultaneously. Compared with metal valves, the energy consumption of compressors using plastic valves can be reduced by 5%-10%.

8. High safety: The valve plate has good toughness and is not easy to break. Even if the valve plate breaks and falls into the cylinder, it will not cause damage to the cylinder or generate sparks. PEEK has a high oxygen index, and the plastic valve plate has higher safety under compressor operating conditions where flammable gas is the medium.

9. Good hydrolysis resistance: PEEK valve discs are not affected by water and high-pressure water vapor.
In fact, PEEK has been successfully used in various industries for more than 18 years as a metal replacement material, including automotive, aviation, oil and gas and other industries. This is due to Junhua’s long-term experience in this field, and PEEK has a variety of excellent properties, destined to replace metal materials for use in extreme environmental conditions. These properties include high temperature resistance, high abrasion resistance, high impact strength, excellent chemical resistance, hydrolysis resistance and dimensional stability.

As a key component of compressors, PEEK material valve plates continue to expand in market size, demand continues to grow, and the competitive landscape becomes increasingly fierce. The development trend shows the characteristics of high performance, customization, green environmental protection, and intelligent manufacturing.

Application of PEEK valve discs in petrochemical industry

Valve seals

As the seal of the valve, PEEK valve disc can provide reliable sealing performance and prevent fluid leakage. Its excellent chemical stability and high temperature resistance enable it to adapt to various harsh working environments and ensure the safe operation of the valve.

Compared with traditional sealing materials, PEEK valve discs have longer service life and lower maintenance costs, bringing significant economic benefits to petrochemical companies.

control valve assembly

In the petrochemical production process, control valves play a vital role. PEEK valve sheets can be used in key components such as valve cores and valve seats of control valves to improve the performance and reliability of control valves.

The high precision and good wear resistance of PEEK valve discs can ensure precise control of control valves, reduce errors, and improve production efficiency. At the same time, its high temperature resistance and corrosion resistance can ensure the long-term stable operation of the control valve in harsh environments.

Pump valve accessories

Pumps and valves in the petrochemical industry require frequent replacement of accessories to ensure the normal operation of the equipment. As a pump valve accessory, PEEK valve discs have good wear resistance and corrosion resistance, which can extend the service life of accessories and reduce equipment maintenance costs.