4"x21" 4021 FRP Membrane Pressure Vessel
300 PSI Fiberglass Membrane Housing For 4″x21″ 4021 Membranes
4021 Reverse Osmosis Membrane Housing
4 inch x 21 inch RO membrane pressure vessel / 4" membrane housing.
300 PSI fiberglass reverse osmosis membrane pressure vessel / 4"x21" 4040 membrane housing.
Material: Fiberglass reinforced polymer (FRP membrane housing).
Comes with mounting pads, straps, hardware and two end caps.
This PVC end port membrane pressure vessel is widely used as 4040 membrane housing.
Feed/concentrate end port 3/4” BSP female (PVC) Permeate end port 1/2" BSP female.
White polyurethane outermost coating provides extra protection to environment and good appearance.
It is used in a wide range of demanding applications, such as municipal water treatment, oil & gas applications, food & beverage plants, electronics manufacturing, the power industry, wastewater treatment, mining industry, pharmaceutical industry, industrial water treatment, automotive industry and commercial water treatment..
Buy 4040 membrane and housing & SAVE.
Download:
Free delivery Australia, Fast delivery New Zealand.
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Estimated Delivery:Jul 15 - Jul 19
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Next Day Dispatch
4"x21" 4021 FRP Membrane Pressure Vessel
300 PSI Fiberglass Membrane Housing For 4″x21″ 4021 Membranes
4021 Reverse Osmosis Membrane Housing
4 inch x 21 inch RO membrane pressure vessel / 4" membrane housing.
300 PSI fiberglass reverse osmosis membrane pressure vessel / 4"x21" 4040 membrane housing.
Material: Fiberglass reinforced polymer (FRP membrane housing).
Comes with mounting pads, straps, hardware and two end caps.
This PVC end port membrane pressure vessel is widely used as 4040 membrane housing.
Feed/concentrate end port 3/4” BSP female (PVC) Permeate end port 1/2" BSP female.
White polyurethane outermost coating provides extra protection to environment and good appearance.
It is used in a wide range of demanding applications, such as municipal water treatment, oil & gas applications, food & beverage plants, electronics manufacturing, the power industry, wastewater treatment, mining industry, pharmaceutical industry, industrial water treatment, automotive industry and commercial water treatment..
Buy 4040 membrane and housing & SAVE.
Download:
Free delivery Australia, Fast delivery New Zealand.
Discover more in our FAQ
What types of industrial water treatment products do you offer?
We offer a comprehensive range of industrial water treatment solutions, including:
Filtration Systems – Effectively removes sediment, chlorine, and other impurities to enhance water purity and system longevity.
Reverse Osmosis Membranes – High-performance purification technology that eliminates dissolved solids, contaminants, and impurities for ultra-pure water.
Membrane Housings – Durable, high-pressure enclosures engineered to protect and optimize the performance of RO membranes.
Filter Cartridges – Precision-engineered sediment, carbon, and specialty filters designed to target specific contaminants for enhanced water treatment efficiency.
Chemical Dosing Systems – Precise chemical treatment for water.
Media FRP Pressure Vessels – High-pressure tanks for filtration media.
Ion Exchange Resins – Softening and demineralization solutions.
Water Instruments – pH meters, conductivity meters, and TDS testers.
Rotameter Flow Meters – Accurate flow measurement devices.
Watermaker Parts – Spare parts for marine and industrial watermakers.
Water Quality Test Kits – Portable and lab testing solutions.
How do I know which product is right for my application?
Choosing the right product depends on:
Water quality parameters (TDS, pH, hardness, contaminants)
Flow rate and pressure requirements
Industry-specific needs (food processing, pharmaceuticals, HVAC, etc.)
If you’re unsure, our technical support team can help you select the best solution.
Do you offer bulk pricing for large industrial orders?
Yes! We provide bulk discounts and custom pricing for high-volume orders. Contact us for a personalized quote.
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions. Expedited shipping options are available upon request.
What is your return policy?
We offer a 14-day return policy from the date of delivery. If you are not completely satisfied with your purchase, you can return the item for a refund or exchange, provided it meets our return conditions.
What happens if I receive a damaged or incorrect item?
If your item arrives damaged or you receive the wrong product, please contact us immediately at support@waterfilter.net.au with photos and your order number. We will send a replacement or issue a refund as per our return policy..
How long does shipping take?
Shipping times depend on location and stock availability. Standard delivery is 3–7 business days for most regions.
Expedited shipping options are available upon request.
Do you ship internationally?
Yes, we offer international shipping for most of our industrial water treatment products. Contact us for custom shipping quotes and lead times.