UPVC, FRP, PPH, PVDF, Stainless Steel & Carbon Steel – Complete Comparison of Filter Housing Materia

Selecting the right filter housing material is critical for ensuring long-term performance, corrosion resistance, and reliability in liquid filtration systems.
At AAL Filter, we provide a full range of filter housings — including UPVC, FRP, PPH, PVDF, Stainless Steel, and Carbon Steel filter vessels — designed for applications in chemical processing, seawater filtration, water treatment, and food & beverage industries.
This guide offers a comprehensive comparison to help you choose the best material for your filtration needs. 

Material Analysis

1️⃣ UPVC (Unplasticized Polyvinyl Chloride) Filter Housing

● Features: Excellent corrosion resistance, lightweight, and cost-effective. UPVC is one of the most commonly used filter housing materials for standard water filtration.

● Limitations: Not suitable for high-temperature or high-pressure applications (maximum 50°C).

● Typical Applications: Pure water systems, swimming pool circulation, wastewater filtration, and general industrial water treatment.

2️⃣ FRP (Fiberglass Reinforced Plastic) Filter Housing

● Features: Exceptional resistance to corrosion, lightweight, and ideal for harsh or marine environments. Its fiberglass structure provides high strength-to-weight ratio.

● Limitations: Lower pressure tolerance compared with metal filter housings.

● Typical Applications: Seawater filtration systems, chemical processing plants, desalination units, and corrosive liquid filtration.

3️⃣ PPH (Polypropylene Homopolymer) Filter Vessel

● Features: Superior chemical resistance to strong acids and alkalis, durable, and easy to weld or fabricate. PPH is widely used for aggressive chemical environments.

● Limitations: Mechanical strength is slightly lower than that of metallic housings.

● Typical Applications: Electroplating wastewater treatment, acid recovery systems, semiconductor processes, and chemical filtration.

4️⃣ PVDF (Polyvinylidene Fluoride) Filter Housing

● Features: Outstanding chemical stability, UV resistance, and high-temperature performance. It is non-contaminating, making it suitable for ultra-pure or pharmaceutical processes.

● Limitations: Higher cost compared with other plastic materials.

● Typical Applications: Semiconductor and microelectronics production, high-purity water systems, strong acid or oxidizing chemical filtration, and pharmaceutical manufacturing.

5️⃣ Stainless Steel Filter Housing (SS304 / SS316L)

● Features: High mechanical strength, excellent pressure tolerance, and easy cleaning. Stainless steel filter housings are also hygienic and meet sanitary standards for food and beverage applications.

● Limitations: Not recommended for strong acid solutions, as chloride corrosion may occur.

● Typical Applications: Food & beverage production, pharmaceuticals, boiler feed water, hot liquids, and industrial process filtration.

6️⃣ Carbon Steel Filter Vessel

● Features: Robust, cost-effective, and ideal for high-pressure filtration systems. It is often internally coated (e.g., epoxy or rubber lining) to enhance corrosion resistance.

● Limitations: Lower corrosion resistance than stainless steel or plastic materials; periodic maintenance required.

● Typical Applications: Cooling water systems, oil and fuel filtration, industrial process lines, and boiler feed systems.

FRP and PPH are ideal for chemical resistance, PVDF and stainless steel for high-temperature or sanitary use, and carbon steel for cost-effective high-pressure systems.

Performance Comparison Table

Frequently Asked Questions (FAQ)

Q1: What is the best material for seawater filtration systems?

A: FRP filter for seawater and PPH filter vessels are highly recommended due to their superior salt and corrosion resistance.

Q2: Which filter housing is suitable for high-temperature fluids?

A: Choose stainless steel (316L) or PVDF filter housings for fluids up to 150°C.

Q3: What’s the most chemical-resistant filter vessel?

A: PVDF and PPH filter housings provide excellent chemical stability against acids, alkalis, and solvents.

Q4: What if I need a cost-effective option?

A: UPVC or carbon steel filter housings (with internal coating) are practical, budget-friendly choices for standard applications. 

Contact AAL Filter — Your Trusted Partner in Filtration Solutions

Selecting the right filter housing material is crucial for ensuring safety, durability, and system performance.
Whether you are handling seawater, chemical solutions, ultrapure water, or industrial liquids, the material you choose determines how efficiently and safely your filtration system operates.

At AAL Filter, we specialize in the design and manufacture of high-performance filter housings made from UPVC, FRP, PPH, PVDF, stainless steel, and carbon steel.
Our engineering team provides customized filtration solutions that meet your exact requirements for pressure, temperature, and corrosion resistance.

Partner with AAL Filter to:
✅ Optimize your system’s efficiency and lifespan
✅ Select the most suitable filter vessel material for your process
✅ Ensure compliance with global industrial standards

Contact us today to discuss your project or request a quotation.
📩 [email protected] |📱WhatsApp: +86 15975383304