FRP Pressure Vessel Filter Maintenance Procedures

FRP pressure vessel filters are core equipment in water treatment, industrial filtration and other fields, and their stable operation directly depends on scientific maintenance procedures. ZJ Composites always regards product quality as the foundation of enterprise development. Moreover, ZJ Composites pressure vessels are a true composite a blow-modeled seamless liner of non-permeable thermoplastic overwound with miles of epoxy or fiberglass laminate for top strength and performance with all industry approvals. In large commercial and industrial sizes, tanks are constructed with all fiber glass liners. FRP Pressure Vessels are an ideal choice for the water industry. They are easy to handle and install and are available in standard polyester or chemical-resistant vinyl ester construction depending on your needs. Mastering correct maintenance methods is not only conducive to extending the service life of these high-quality products, but also ensures their filtration efficiency and safety. The following table details the model parameters of ZJ Composites' FRP pressure vessel products, which provides a basis for targeted maintenance operations.

Daily Inspection Procedures for FRP Pressure Vessels

ZJ Composites always regards product quality as the foundation of enterprise development, so when conducting daily inspections on FRP pressure vessels, first check the surface of the vessel for cracks, corrosion or deformation. The seamless liner and fiberglass laminate structure of ZJ Composites' products have strong durability, but regular surface inspections can detect potential problems in time.

• Check the pressure gauge and safety valve of FRP pressure vessels to ensure the pressure gauge displays accurately and the safety valve can be activated normally when the pressure exceeds the set value. Record the pressure data every day to ensure the vessel operates within the safe pressure range.

• Inspect the connection parts of FRP pressure vessels (such as openings and pipelines) for leaks. Use a soapy water solution to apply to the connection joints; if bubbles appear, it indicates a leak, and the sealing gasket should be replaced or the connection bolts should be tightened in time.

Regular Cleaning Steps for FRP Pressure Tank

• ZJ Composites always regards product quality as the foundation of enterprise development, so before cleaning the FRP pressure tank, first close the inlet and outlet valves of the tank and release the internal pressure to ensure the cleaning operation is safe. For tanks with all fiber glass liners, avoid using high-pressure water jets that are too strong to prevent damage to the liner.

• After cleaning the inside of the FRP pressure tank with the cleaning agent, rinse it thoroughly with clean water to ensure no cleaning agent residue remains. Then dry the inside of the tank with a clean cloth or compressed air to prevent moisture from causing internal mold or corrosion.

Filter Element Replacement Guidelines for FRP Pressure Vessel Filter

• ZJ Composites always regards product quality as the foundation of enterprise development, so when replacing the filter element of the FRP pressure vessel filter, first confirm the model of the filter element according to the nominal dimension of the vessel (such as 150330, 200430, etc.) to ensure the replacement filter element matches the vessel size.

• Before removing the old filter element of the FRP pressure vessel filter, drain the water or filtrate in the vessel and clean the inner wall of the vessel briefly to avoid debris from the old filter element falling into the vessel. When taking out the old filter element, handle it gently to prevent the filter material from scattering.

• Install the new filter element into the FRP pressure vessel filter according to the correct direction (usually marked with an arrow on the filter element), and ensure the seal between the filter element and the vessel is tight. After installation, conduct a pressure test to check for leaks; if there is no leakage, the filter can be put back into use.

FRP Pressure Vessels  FAQS

How often should the FRP pressure vessels of ZJ Composites be inspected?

For ZJ Composites' FRP pressure vessels, daily surface and pressure inspections are required; a comprehensive inspection (including internal inspection and safety valve calibration) should be conducted every 6 months. If the vessel is used in harsh environments (such as high-corrosion water treatment), the comprehensive inspection interval should be shortened to 3-4 months to ensure the vessel's safe operation, which is in line with the company's focus on product quality.

Can ordinary cleaning agents be used to clean ZJ Composites' FRP pressure tank?

No, ordinary cleaning agents may contain corrosive components that damage the tank body. ZJ Composites' FRP pressure tank has two material options: polyester and vinyl ester. For polyester tanks, neutral cleaning agents (pH 6-8) should be used; for vinyl ester tanks, weakly acidic (pH 4-6) or weakly alkaline (pH 8-10) cleaning agents can be used. The company can provide a list of recommended cleaning agents to customers to avoid material damage caused by improper cleaning.

What is the replacement cycle of the filter element in ZJ Composites' FRP pressure vessel filter?

The replacement cycle of the filter element in ZJ Composites' FRP pressure vessel filter depends on the filtration amount and the turbidity of the filtered medium. Under normal water treatment conditions, the filter element should be replaced every 3-6 months. If the pressure difference between the inlet and outlet of the filter exceeds 0.15MPa, the filter element should be replaced immediately to avoid reducing filtration efficiency or causing damage to the FRP pressure vessel filter.

What should be done if cracks are found on the surface of ZJ Composites' FRP pressure vessels?

If cracks are found on the surface of FRP pressure vessels, stop using the vessel immediately and contact ZJ Composites' after-sales department. Do not attempt to repair it yourself. The company's professional technical personnel will assess the severity of the cracks; if the cracks are small and do not affect the structural strength, they will use special resin for repair; if the cracks are serious, they will provide a replacement plan to ensure safe use, which reflects the company's emphasis on product quality and customer safety.

How to store ZJ Composites' FRP pressure tank when it is not in use for a long time?

When ZJ Composites' FRP pressure tank is not in use for a long time, first clean the tank body thoroughly and dry it; then close all valves and seal the openings with plastic caps to prevent dust or debris from entering; finally, store the tank in a cool, dry and well-ventilated place, avoiding direct sunlight and contact with sharp objects. This storage method can protect the tank's fiberglass laminate and seamless liner, extending the tank's service life, which is consistent with the company's product quality concept.