NORRES AIRDUC® PUR 355 AS (HD)

Antistatic heavy-duty PUR hose for demanding conveying and suction

The NORRES AIRDUC® PUR 355 AS (HD) is a highly abrasion-resistant, permanently antistatic (wall surface <10⁹ Ω according to ISO 8031) polyurethane hose, designed for conveying dry bulk materials, granulates, powders and gases under tough conditions including ATEX environments. :contentReference[oaicite:1]{index=1}

Applications

Suitable for pneumatic conveying, vacuum transport, suction conveying, dosing systems, big-bag discharge, injection moulding support, shredders, mills, material recycling, construction/industrial vacuum systems and agricultural conveying. Excellent for abrasive materials, high throughput and harsh service life. :contentReference[oaicite:2]{index=2}

Features and approvals

• Heavy-duty construction with high abrasion resistance and embedded spring steel wire. :contentReference[oaicite:3]{index=3}
• Permanent antistatic wall (<10⁹ Ω) in accordance with ISO 8031 and TRGS 727. :contentReference[oaicite:4]{index=4}
• Good resistance to oil, gasoline and chemicals; excellent low-temperature flexibility. :contentReference[oaicite:5]{index=5}
• Increased pressure and vacuum capacity—for demanding conveying applications. :contentReference[oaicite:6]{index=6}
• Temperature range: −40 °C to +90 °C (short-term up to ~125 °C). :contentReference[oaicite:7]{index=7}
• Flame-retardant according to UL94-V2 / DIN 4102-B1. :contentReference[oaicite:8]{index=8}
• Meets ATEX 2014/34/EU for zone 20/21/22 (dust) and zone 1/2 for gases/liquids. :contentReference[oaicite:9]{index=9}

Construction

1 = Spring steel wire firmly embedded in the wall
2 = Permanently antistatic premium ether-PUR (Pre-PUR®) wall
3 = AIRDUC® profile with smooth inner surface for optimal flow and cleaning

Recommended accessories

• CLAMP 212 – stainless steel hose clamp with grounding option
• CONNECT 228 – transition/adapter couplings
• CLAMP 213 – quick-release clamp for heavy suction/abrasive applications
• CONNECT 270-271 – hygienic stainless couplings (when integration to food grade or hybrid systems required)

Contact us for guidance on correct installation, grounding and ATEX-compliant connection.

FAQ: NORRES AIRDUC® PUR 355 AS (HD)

What is this hose used for?
For conveying, suction and vacuum feeding of abrasive powders, granulates and gases in high-throughput installations across plastics, recycling, construction and agricultural sectors. :contentReference[oaicite:10]{index=10}

Is the hose antistatic?
Yes – the wall is permanently antistatic (<10⁹ Ω) according to ISO 8031 and TRGS 727, making it suitable for use in zones 20/21/22 (dust) and zone 1/2 for gases/liquids. :contentReference[oaicite:11]{index=11}

What are the operating temperature and pressure ranges?
Operating temperature from −40 °C up to +90 °C, and short-term up to approx. +125 °C; pressure and vacuum ratings vary by diameter—see official datasheet. :contentReference[oaicite:12]{index=12}

Can it be used in ATEX zones?
Yes – it complies with ATEX 2014/34/EU for pneumatic conveying of combustible dusts (zone 20/21/22) and for gases/liquids in zone 1/2. :contentReference[oaicite:13]{index=13}

Which accessories are recommended for safe installation?
Use certified clamps and couplings such as CLAMP 212 (with grounding), CONNECT 228, CLAMP 213 and, if needed, CONNECT 270-271 for hygienic integration. Always follow grounding and ATEX installation guidelines.