NORRES AIRDUC® PUR-INOX 356 FOOD-AS (XHD)
Antistatic food- and pharmaceutical-grade PUR hose with stainless steel spiral – super heavy duty
NORRES AIRDUC® PUR-INOX 356 FOOD-AS (XHD) is an extra-strong, flexible and antistatic hose made of ether-based polyurethane (Pre-PUR®) with an integrated stainless-steel spring wire (INOX). Designed for conveying and suction of dry foods, powders, granulates and bulk materials in demanding hygienic and ATEX environments.
Applications
Particularly suitable for the food and pharmaceutical industries: conveying, vacuum and dosing systems, big-bag emptying, drying systems, mixers, pellet and tablet presses, packaging machines, mills and transport of rice, grain, sugar, coffee, tea, milk powder, flour and other dry goods. Can be used in explosion-hazard areas (zones 20/21/22 inside).
Properties and approvals
- Super heavy-duty design with very high pressure, vacuum and compression resistance.
- Permanently antistatic wall: electrical and surface resistance < 10⁹ Ω (ISO 8031, TRGS 727, NFPA 652).
- Fully approved by an independent laboratory according to EU Directive 10/2011, EC 1935/2004, EU 2015/174 and FDA 21 CFR 177.2600 – entire hose tested and certified.
- Complies with ATEX Directive 2014/34/EU (1999/92/EC) for conveying of combustible dusts and liquids in zones 20–22 (inside) and gases in zones 0–2.
- Odourless and tasteless, resistant to microbes, hydrolysis, oil, gasoline and chemicals.
- Temperature range: −40 °C to +90 °C.
- Manufactured according to GMP (EC 2023/2006) and compliant with RoHS and REACH.
Construction
1 = Stainless-steel spring wire (INOX)
2 = Wall made of permanently antistatic ether-based PUR (Pre-PUR®)
3 = AIRDUC® profile with additional wear reinforcement
4 = Smooth inner and outer surfaces for optimal flow and hygienic cleaning
Recommended accessories
- CLAMP 211 / 216 – stainless-steel clamps with equipotential bonding
- CONNECT 240 – 246 FOOD – hygienic stainless-steel couplings for food applications
- CONNECT 228 / 233 / 234 – transition and adapter fittings
- CONNECT 245 FOOD – Tri-Clamp stainless-steel coupling
Contact us for guidance on proper installation, equipotential bonding and ATEX-compliant integration.
Need technical assistance?
Contact us for professional advice on the selection, assembly and integration of flexible antistatic and food-grade hoses for process and conveying systems.
FAQ: NORRES AIRDUC® PUR-INOX 356 FOOD-AS (XHD)
What is this hose used for?
For conveying, vacuum and extraction of dry foods, powders and granulates in food, pharmaceutical and ATEX-classified environments.
Is the hose antistatic?
Yes – the wall is permanently antistatic (< 10⁹ Ω) according to ISO 8031 and TRGS 727, suitable for zones 20/21/22 (inside).
Is it food-grade?
Yes – the entire hose is tested and certified according to EU 10/2011, EC 1935/2004, EU 2015/174 and FDA 21 CFR 177.2600.
What are the temperature and pressure limits?
Temperature range −40 °C to +90 °C. Pressure and vacuum values depend on diameter – see table below.
Which accessories are recommended?
CLAMP 211/216 and CONNECT FOOD series fittings ensure safe ATEX and hygienic installation.
Related links
Technical specifications
| Inner Ø (mm) | Outer Ø (mm) | Pressure (bar) | Vacuum (bar) | Bending radius (mm) | Weight (kg/m) | Order No. |
|---|---|---|---|---|---|---|
| 32 | 43.00 | 5.180 | 1.000 | 90 | 0.68 | 356-0032-1018 |
| 38 | 49.00 | 4.425 | 1.000 | 104 | 0.79 | 356-0038-1018 |
| 40 | 51.00 | 4.225 | 1.000 | 109 | 0.82 | 356-0040-1018 |
| 50 | 61.00 | 3.430 | 1.000 | 134 | 1.00 | 356-0050-1018 |
| 51 | 62.00 | 3.155 | 1.000 | 134 | 1.02 | 356-0051-1018 |
| 60 | 71.00 | 2.890 | 1.000 | 156 | 1.18 | 356-0060-1018 |
| 63-65 | 74.00 | 2.780 | 1.000 | 163 | 1.23 | 356-0063-1018 |
| 65 | 76.00 | 2.675 | 1.000 | 169 | 1.27 | 356-0065-1018 |
| 70 | 82.00 | 2.495 | 1.000 | 186 | 1.37 | 356-0070-1018 |
| 75-76 | 88.00 | 2.330 | 1.000 | 195 | 1.48 | 356-0076-1018 |
| 80 | 92.00 | 2.195 | 1.000 | 205 | 1.55 | 356-0080-1018 |
| 90 | 103.00 | 2.170 | 1.000 | 250 | 2.06 | 356-0090-1018 |
| 100-102 | 115.00 | 1.890 | 1.000 | 272 | 2.31 | 356-0102-1018 |
| 125-127 | 140.00 | 1.450 | 0.870 | 336 | 2.85 | 356-0127-1018 |
| 150-152 | 165.00 | 1.375 | 0.725 | 435 | 3.73 | 356-0152-1018 |
Overpressure and underpressure are recommended operating limits. The bending radius is measured through the inner hose curve. Technical modifications reserved. All values determined at ≈ 20 °C.
