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Help CenterCommercial Swimming Pool Sand Filter System, 36" Diameter Tank, 50PSI Working Pressure, 4-Way Valve, 1Year Warranty
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer since 1998 with over 20 years of experience in producing high-performance filtration equipment. Our Commercial Swimming Pool Sand Filter System with a 36-inch diameter tank, 50 PSI working pressure, and 4-way valve is designed to meet the demanding needs of large-scale commercial pools, water parks, and aquatic facilities. Built with precision engineering and durable materials, this filter delivers reliable, low-maintenance operation, making it a cost-effective solution for facility managers and pool contractors worldwide.
This sand filter system combines large filtration capacity with a robust construction, ensuring crystal-clear water and extended service life. The 36-inch tank provides ample media surface area for efficient particle capture, while the 50 PSI pressure rating allows for high-flow applications without compromising performance. Whether you are upgrading an existing pool or building a new commercial facility, our system offers easy installation, simple operation, and consistent results.
Key Features & Benefits
- Large 36-inch Diameter Tank: Provides a high-volume sand bed for superior filtration of commercial pools up to 100,000 gallons. Reduces backwash frequency, saving water and energy.
- 50 PSI Working Pressure: Designed to handle high-flow pumps and heavy-duty commercial use. Ensures consistent performance even under peak load conditions.
- 4-Way Multi-Port Valve: Enables quick switching between filter, backwash, rinse, and closed positions. Simplifies maintenance and extends filter life.
- Corrosion-Resistant Construction: Tank made from fiberglass-reinforced polyester (FRP) with UV protection – will not rust, dent, or corrode, even in harsh environments.
- 1-Year Warranty: Covers manufacturing defects and provides peace of mind. Backed by a factory with two decades of export experience.
- Easy Installation & Operation: Pre-assembled valve and pressure gauge. Standard 2-inch connections for compatibility with most commercial plumbing systems.
- Low Maintenance: Only requires periodic backwashing and media replacement every 5-7 years. No cartridges or DE powder needed.
- Versatile Application: Suitable for in-ground and above-ground commercial pools, water parks, fountains, and industrial water filtration.
Technical Specifications
| Model | BSF-36 (Boli Standard) |
| Tank Diameter | 36 inches (914 mm) |
| Design Pressure | 50 PSI (3.4 bar) |
| Maximum Flow Rate | Up to 150 GPM (approx. 34 m³/h) – depends on pump and media |
| Filtration Area | 7.07 sq ft (0.66 m²) based on sand bed depth |
| Inlet/Outlet Size | 2-inch female NPT (standard) |
| Media Required | Approx. 600 lbs (272 kg) of #20 silica sand |
| Valve Type | 4-Way Multi-Port (top-mount) |
| Overall Height | Approx. 48 inches (122 cm) with valve |
| Warranty | 1 Year (manufacturing defects) |
Why Choose Boli for Your Commercial Pool Filtration?
Anping County Boli Hardware Wiremesh Products Factory has been a leading manufacturer of filtration equipment since 1998, exporting to over 15 global markets including North America, Europe, Southeast Asia, and Oceania. With an annual export value of US$5–10 million, we have built a reputation for quality, reliability, and competitive pricing. Our 36-inch sand filter system is rigorously tested for pressure integrity and leak resistance before shipment, ensuring you receive a product that meets international standards.
We understand that commercial pool operators need equipment that minimizes downtime and maximizes water clarity. That’s why our filter features a robust 4-way valve, a large tank for less frequent backwashing, and a corrosion-resistant shell that withstands years of outdoor exposure. The 1-year warranty covers any manufacturing issues, and our dedicated after-sales team is available to answer questions and provide technical support.
Whether you are a distributor, contractor, or facility manager, we offer flexible shipping options from multiple ports (Tianjin, Qingdao, Shanghai, Foshan) and can customize the system to meet your specific requirements – including different valve configurations, color options, or media types. Contact us today to request a quote or discuss your project needs. Join thousands of satisfied customers worldwide who trust Boli for their commercial pool filtration.
Frequently Asked Questions (FAQ)
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Q: What is the recommended pump size for this 36-inch sand filter?
A: For optimal performance, we recommend a pump with a flow rate between 100 and 150 GPM at 50 feet of head. The exact pump size depends on your pool’s hydraulic requirements. Our team can help you select the right pump. -
Q: How often should I backwash the filter?
A: Backwash frequency depends on the pool load and usage. Typically, you should backwash when the pressure gauge reads 8–10 PSI above the clean starting pressure. For a commercial pool, this may be every 1–3 days. Our large tank reduces backwash frequency compared to smaller filters. -
Q: What type of sand is required, and how much?
A: We recommend #20 silica sand (0.45–0.55 mm). The tank requires approximately 600 lbs (272 kg) of sand. We can also supply the sand as an optional extra. -
Q: Does the filter come with a pressure gauge and valve already installed?
A: Yes, the 4-way valve and pressure gauge are pre-assembled on the tank. You only need to connect the plumbing and add the media. -
Q: Is the tank compatible with saltwater pools?
A: Yes, the FRP tank is corrosion-resistant and suitable for saltwater systems. However, we recommend using a high-quality valve with stainless steel components for saltwater environments (optional upgrade available). -
Q: What is the shipping weight and dimensions?
A: The filter system weighs approximately 110 lbs (50 kg) without sand. Packed in a sturdy plywood crate, the dimensions are roughly 40" x 40" x 50" (101 x 101 x 127 cm). Actual weight may vary slightly. -
Q: Do you offer OEM or custom branding?
A: Yes, we can produce filters with your logo and custom packaging. Minimum order quantities apply. Please contact our sales team for details. -
Q: What is covered under the 1-year warranty?
A: The warranty covers manufacturing defects in materials and workmanship, including tank cracks, valve leaks, and pressure gauge failure under normal use. It does not cover damage from improper installation, misuse, or normal wear of consumables like sand.
For more information or to place an order, please contact us at sales@boliwiremesh.com or visit our website. We look forward to partnering with you!
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