ASCO Solenoid Valve

ASCO Pulse Valve

Product Overview

The ASCO pulse valve is a vital component in air box pulse dust collectors, known for its exceptional characteristics and advantages. It features an electromagnetic pilot head, a diaphragm, and a valve body. The design includes a rear chamber that is larger than the front chamber, enabling the diaphragm to remain closed under air pressure.

When an electrical signal is received from the control instrument, the electromagnetic pilot head attracts the moving column, opening the exhaust port. This action rapidly releases pressure gas from the rear chamber, allowing the pressure gas in the front chamber to lift the diaphragm and open the pulse valve passage for blowing. Once the electrical signal stops, the spring in the electromagnetic pilot head resets the moving column. The combined pressure in the rear chamber and the spring force then closes the diaphragm, halting the blowing action.

Technical Parameters and Selection

The ASCO pulse valve operates within a working pressure range of 0.1 MPa to 0.7 MPa, utilizing treated air that is free from oil and water. Various models are available, enabling configuration based on factors such as environmental temperature, explosion-proof requirements, installation diameter, valve body material, and pulse blowing pressure and flow rate. Common models include:

EFG353G044

EFG353G043

NFG353D133V

EFXE353.060

Voltage options include 24V DC and 220V AC.

Application Scenarios and Advantages

ASCO pulse valves are extensively used in air box pulse dust collectors for efficient dust cleaning and removal. Their advantages include:

Extremely Fast On/Off Response Time: Ensures efficient dust cleaning.

High Peak Pressure: Achieves more effective bag cleaning.

High Flow Rate: Suitable for various industrial applications.

Multiple Installation Position Options: Adapts to different industrial needs.

Explosion-Proof Design: Ideal for environments with explosion-proof requirements.

Additionally, the ASCO pulse valve boasts a springless design, high flow capacity, long service life, and rapid switching speed. It delivers high-energy gas pulses while minimizing compressed air consumption, often achieving a 15% savings. The patented “clamp connection” simplifies installation, while the built-in silencer ensures quiet operation and prevents foreign objects from entering the valve body.

Selection Criteria

When selecting an ASCO pulse valve, consider the following criteria:

Tank Volume: The air volume in the supply tank determines the required valve size. Larger tanks may necessitate valves capable of handling higher air volumes for efficient cleaning.

Tank Pressure: This refers to the inlet pressure of the valve, shaped by the air pressure in the tank. Matching the valve's capabilities with system needs is essential.

Max Allowable Pressure: The highest system or line pressure the valve can safely sustain, ensuring operational integrity and safety.

Electrical Pulse Length: The duration the valve remains energized. Shorter pulses can reduce energy consumption, while longer pulses may be required for thorough cleaning.

Total Pulse Length: The interval from valve opening to closing, affecting the cleaning process's effectiveness. The optimal length varies based on system requirements.

Peak Pressure: The highest pressure achieved during the pulse, generating the cleaning shock wave that dislodges particulates from filter surfaces.

Pressure Drop Tank: The allowable pressure drop to maintain sonic flow, ideally not exceeding 50% of the absolute tank pressure to ensure efficient airflow.

Performance Ratio: The ratio of tank pressure to peak pressure, influenced by the valve's flow coefficient (Kv) and opening time. A higher ratio indicates better valve performance.

Volume per Pulse: The air volume passing through the valve per pulse, impacting filter cleaning efficiency. Sufficient volume is crucial for effective particulate removal.

Material of Construction: The choice of body and seal materials is critical for compatibility with the media. Common materials include aluminum, stainless steel, and nitrile for seals, selected based on the media's characteristics to ensure durability and reliability.

Summary

The ASCO pulse valve is an essential component for air box pulse dust collectors, offering numerous advantages such as fast response times, high peak pressures, and efficient operation. By understanding its technical parameters and selection criteria, users can optimize their dust collection systems for enhanced performance and reliability.