Siphon Almeva Long John 40 DN40 ZULJ40 for drainage and odor trap

The Almeva Long John 40 DN40 siphon (ZULJ40) is a compact plumbing component designed to provide reliable drainage and effective sealing against sewer gases. Intended for integration with 40 mm pipe systems, this siphon offers a straightforward solution for installations requiring a standard DN40 connection and a compact form factor that fits into tight spaces in domestic and light commercial settings.

Advantages

The Long John design provides a stable water seal to prevent odors and gases from entering indoor spaces. Its DN40 connection size ensures compatibility with common 40 mm drainage pipes. The compact length and streamlined shape facilitate installation in confined beneath-sink or appliance locations while maintaining access for routine inspection and cleaning.

Suitable for (tasks / use cases)

• Drainage and odor trapping for sinks and washbasins with 40 mm outlets
• Installation under kitchen sinks, bathroom basins, and utility room fixtures
• Light commercial plumbing where a compact DN40 siphon is required
• Retrofit projects that need a direct replacement for standard 40 mm traps

Key specifications

• Connection size: DN40 (fits 40 mm pipework)
• Function: drainage and odor trap (water seal)
• Form factor: compact, elongated siphon body for reduced installation depth
• Material characteristics: corrosion-resistant construction suitable for domestic wastewater
• Maintenance: accessible for periodic cleaning and inspection

How to use

Install the siphon in line with the sink or fixture outlet using DN40-compatible fittings and ensure joints are sealed according to local plumbing standards. Position the unit so the trap section remains filled with water to maintain the odor seal. Follow standard plumbing practice to provide appropriate slope and support for connected drain pipes. Access points should remain unobstructed to permit occasional removal of debris and cleaning when necessary.

Usage recommendations

For reliable performance, verify pipe alignment and use compatible DN40 connectors and sealants. Avoid disposing of grease, large food particles, or non-biodegradable materials that could cause blockages. Periodically inspect the trap and clean out sediment to maintain the water seal and prevent odors.