HUPLONG INDUSTRIES (M) SDN BHD is the authorized distributor of NORRES industrial hoses in Malaysia.
HUPLONG INDUSTRIES (M) SDN BHD supplies genuine NORRES PRO₂AIR® Pre-PUR 620 membrane diffuser tubes for industrial and municipal wastewater treatment applications. NORRES officially lists this model for pressure diffusion with fine bubbles, oxygen input for nitrification in activation basins, and permanent or intermittent ventilation.
NORRES PRO₂AIR® Pre-PUR 620 is a membrane diffuser tube with a wall made from special premium polyurethane Pre-PUR®. The official membrane wall thickness is approximately 0.7 mm.
NORRES specifies very fine and uniform bubble formation through optimized perforation. NORRES also states that this diffuser can provide high energy savings compared with market-standard EPDM and silicone diffusers due to lower pressure loss. The membrane does not contain a plasticizer, and NORRES states that this helps prevent curing during long operating periods.
Official NORRES applications include oxygen input and circulation in fixed-bed and bioreactors, thorough mixing of activation basins, sand trap louvre ventilation, renaturation of lakes and rivers, aquaculture and fish farming.
NORRES specifies very good resistance to wastewater and municipal sewerage in accordance with DWA-M 115. The membrane is also microbe resistant and hydrolysis resistant, with good resistance to oil, gasoline and chemicals.
The official operating range is 3 to 8 Nm³/(h*m aer.) under normal operation, with a minimum of 1 Nm³/(h*m aer.), a maximum of 15 Nm³/(h*m aer.) and a purging operation value of 18 Nm³/(h*m aer.). The official temperature range is from -40°C to +90°C.
Current standard variants include Size 63 with 64.5 mm inside diameter in 570 mm, 820 mm and 1070 mm lengths, plus Size 90 variants with 91.5 mm and 90.8 mm inside diameters in 1000 mm lengths. The related ventilation lengths vary by article variant and must be checked against the official technical table before ordering.
For PRO₂AIR® Pre-PUR 620 selection, the aeration basin layout, diffuser size, diffuser length, ventilation length, operating air flow, blower capacity, wastewater condition, mounting arrangement and total diffuser quantity should be confirmed.
Our team can assist customers throughout Malaysia with NORRES hose selection based on hose diameter, conveyed material, operating temperature, airflow, vacuum condition, installation length and quantity requirement.
FAQ
Q: What is NORRES PRO₂AIR® Pre-PUR 620?
A: NORRES PRO₂AIR® Pre-PUR 620 is a membrane diffuser tube for industrial and municipal wastewater treatment applications.
Q: What is the official membrane material?
A: NORRES specifies a wall made from special premium polyurethane Pre-PUR® with an approximate wall thickness of 0.7 mm.
Q: What applications are officially listed by NORRES?
A: NORRES lists pressure diffusion with fine bubbles, oxygen input for nitrification in activation basins, permanent and intermittent ventilation, fixed-bed and bioreactors, activation basin mixing, sand trap louvre ventilation, lake and river renaturation, aquaculture and fish farming.
Q: What is the official operating air flow range?
A: NORRES specifies normal operation at 3 to 8 Nm³/(h*m aer.), with a minimum of 1 Nm³/(h*m aer.), a maximum of 15 Nm³/(h*m aer.) and purging operation at 18 Nm³/(h*m aer.).
Q: What is the operating temperature range?
A: NORRES specifies an operating temperature range from -40°C to +90°C.
Q: Does PRO₂AIR® Pre-PUR 620 help reduce pressure loss?
A: NORRES states that this membrane diffuser tube can provide high energy savings compared with market-standard EPDM and silicone diffusers because of lower pressure loss.
Q: Is the membrane suitable for wastewater and municipal sewerage applications?
A: NORRES specifies very good resistance to wastewater and municipal sewerage in accordance with DWA-M 115. It is also specified as microbe resistant and hydrolysis resistant.
Q: Which standard variants are currently listed?
A: NORRES currently lists Size 63 with 64.5 mm inside diameter in 570 mm, 820 mm and 1070 mm lengths. It also lists Size 90 variants with 91.5 mm and 90.8 mm inside diameters in 1000 mm lengths. The applicable ventilation length must be confirmed by article variant.
Q: How should the correct PRO₂AIR® Pre-PUR 620 diffuser be selected?
A: Selection should consider diffuser size, diffuser length, ventilation length, basin geometry, required operating air flow, blower capacity, wastewater condition, installation arrangement, maintenance access and total diffuser quantity.
Malaysia
