VHD Series Heat-Sanitizable RO Membrane Element
The VHD series heat-sanitizable reverse osmosis membrane withstands hot water disinfection treatment, specifically designed for food and pharmaceutical industries requiring pasteurization processes. Capable of enduring temperatures up to 80°C for sanitization, it ensures hygienic operation without chemical cleaning agents.
- Low energy consumption
- High filtration accuracy
- Large water output
- Strong anti-fouling
Product Introduction
The VHD series heat-sanitizable reverse osmosis membrane is specifically designed for food and pharmaceutical industries that require pasteurization (hot water disinfection) processes. It withstands hot water sanitization treatment at elevated temperatures, ensuring hygienic operation without the use of chemical cleaning agents. The VHD membrane features a sanitary-style grid shell and fittings that eliminate dead water zones between the membrane element and the pressure vessel, making it suitable for applications with stringent hygiene requirements. This product has obtained the National Drinking Water Safety Product Hygiene Permit.
Specifications & Parameters
Performance Parameters:
| Model | Effective Area ft² (m²) | Feed Spacer mil | Permeate Flow gpd (m³/d) | Stable Salt Rejection % |
| VHD-8040 | 400 (37.2) | 34 | 9,000 (34) | 98.0 |
| VHD-4040 | 90 (8.4) | 28 | 2,100 (7.9) | 98.0 |
Note: Test conditions: 150 psi (1.03 MPa), 2,000 mg/L NaCl solution, 25°C, pH 7.0 ± 0.5, 15% recovery rate.
Effective membrane area tolerance: ±3%; individual element permeate flow variation: ±15%.
Product Dimensions:
| Model | A inch (mm) | B inch (mm) | C inch (mm) |
| VHD-4040 | 40 (1,016) | 1.04 (26.5) | 0.75 (19) |
| VHD-8040 | 40 (1,016) | 1.125 (29) | 7.9 (201) |
Note: 1 inch = 25.4 mm
Operating Conditions
| Membrane Type | Polyamide Composite Membrane |
| Maximum Operating Pressure | 600 psi (4.14 MPa) |
| Maximum Operating Temperature | 80°C (for sanitization) |
| Feed Water pH Range | 3.0 - 10.0 (continuous operation) |
| Maximum Feed Water Chlorine | <0.1 ppm |
Application Areas
The VHD membrane is widely applied in food processing, pharmaceutical manufacturing, beverage production, dairy operations, biotechnology, and other applications requiring stringent hygiene standards and pasteurization protocols. It delivers heat sanitization capability at up to 80°C, sanitary design with no dead water zones, and compliance with drinking water safety regulations to meet diverse water treatment requirements.
Heat Sanitization Features
The VHD series can withstand hot water sanitization at temperatures up to 80°C, enabling effective pasteurization without chemical disinfectants. This makes it especially suitable for industries where chemical-free sanitization is required, such as pharmaceutical water systems and food processing plants.
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