HDPE Compression 90 Degree Elbow

SIFFO's HDPE compression elbow delivers exceptional chemical resistance, UV stability, and mechanical strength. Available in sizes ranging from 20mm to 110mm with pressure ratings up to PN16 (16 bar), this versatile 90 degree pipe elbow ensures leak-free performance across residential, agricultural, and commercial applications.

Key Features & Benefits

Tool-Free Installation: Mechanical compression design allows quick assembly without welding equipment—simply cut, chamfer, insert, and tighten

Superior Material: Constructed from UV-resistant PE material, ensuring 20+ year service life in outdoor environments

Dual Pressure Ratings: PN16 for 20-63mm sizes, PN10 for 75-110mm sizes, compatible with standard HDPE pipes

Universal Compatibility: Fits HDPE pipes conforming to ISO 4427, EN12201 standards

Reusable Design: Compression mechanism allows disassembly and reconfiguration without damaging components

Corrosion Proof: 100% resistant to electrolytic and galvanic corrosion, unlike metal alternatives

HDPE Compression 90 Degree Elbow Applications

Water Supply Systems

Municipal and residential potable water distribution networks requiring reliable 90-degree directional changes.

Agricultural Irrigation

Drip irrigation, sprinkler systems, and pivot irrigation setups for farms, vineyards, and golf courses.

Industrial Fluid Handling

Chemical processing, compressed air lines, and industrial cooling water systems.

Landscape & Horticulture

Commercial landscaping, greenhouse operations, and sports field irrigation.

Installation Instructions

Prepare Pipe: Cut HDPE pipe square using a pipe cutter. Remove burrs and chamfer the pipe end to 15° to facilitate smooth insertion.

Loosen Fitting: Loosen the blue compression nut (Cap) by 3-4 turns. Do not fully disassemble internal components.

Insert Pipe: Push the pipe firmly into the fitting body until it contacts the internal stopper. Ensure proper depth for optimal seal.

Tighten:

20-32mm: Hand-tighten the compression nut securely

40-110mm: Hand-tighten first, then use a wrench for final 1-2 turns to ensure leak-proof connection

Pressure Test: Allow 30 minutes for O-ring settlement before pressure testing. System ready for immediate use.

Pro Tip: For sizes 32mm and above with female threads, stainless steel reinforcement rings are included to prevent deformation under high torque.

Quality Assurance & Compliance

Manufactured under ISO 9001 quality management systems

100% pressure tested before shipment

10-year warranty against manufacturing defects

Full batch traceability with material certificates available

Frequently Asked Questions

What is the difference between HDPE compression fittings and butt fusion fittings?

HDPE compression fittings use mechanical tightening to create a seal, requiring no heat or electricity—ideal for quick repairs and temporary installations. Butt fusion fittings require specialized welding equipment to melt and fuse pipe ends, creating a permanent, monolithic joint. Compression fittings are reusable; butt fusion joints are permanent.

Can HDPE compression elbows be used for gas applications?

These specific PP compression fittings are rated for water and compressed air (PN16/PN10). For gas applications, specialized gas-rated compression fittings or electrofusion fittings meeting EN 1555 standards are required. Always verify local regulations before gas installation.

How do I prevent leaks with compression fittings?

Ensure pipe ends are cut square and deburred, insert pipe fully to the internal stopper, and tighten according to size guidelines (hand-tight for ≤32mm, wrench-assisted for ≥40mm). Avoid over-tightening, which can damage the O-ring seal.