HDPE Compression T-shaped Tee

SIFFO's HDPE compression elbow delivers exceptional chemical resistance, UV stability, and mechanical strength。Available in sizes 20mm to 110mm with pressure ratings up to PN16, this versatile 3-way pipe fitting serves as the backbone of efficient fluid distribution networks in agriculture, municipal water supply, and industrial applications.

Key Features & Benefits

Equal Tee Geometry: All three ports maintain identical diameter, ensuring balanced flow distribution and reduced turbulence

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 T-shaped Tee Applications

Agricultural Irrigation Networks

Create mainline branches to field zones in drip and sprinkler irrigation systems. Essential for pivot irrigation pipe networks where flow division to multiple towers is required.

Municipal Water Distribution

Residential and commercial water supply branching. Used in PE pipe networks to distribute potable water to multiple building connections or fire hydrant lines.

Industrial Process Piping

Chemical transfer lines, cooling water circuits, and compressed air distribution.

Landscaping & Golf Courses

Commercial landscape irrigation mainlines. Allows symmetrical distribution to sprinkler zones ensuring equal pressure across large areas.

Rural Water Supply

Gravity-fed and pumped water systems in remote areas. Compression fitting reliability eliminates need for skilled welders in field repairs.

Aquaculture & Fish Farming

Water circulation systems, pond aeration lines, and drainage networks. Resistant to biofouling and aquatic environment exposure.

Installation Instructions

Step 1: Pipe Preparation

Cut HDPE pipe square using a pipe cutter or fine-tooth saw. Remove all burrs and chamfer pipe end to 15° angle (approximately 1-2mm bevel) to allow smooth entry past O-ring seal without damage. Clean pipe end to remove dirt, grease, or moisture.

Step 2: Fitting Preparation

Loosen all three compression caps by unscrewing 3-4 turns counter-clockwise. Do not fully remove caps or dislodge internal components (clinching ring, bush, O-ring). Ensure O-rings are properly seated in grooves.

Step 3: Pipe Insertion

Firmly push prepared pipe ends into each port of the tee body until they contact the internal pipe stop. Visual confirmation through inspection holes (if equipped) or depth marking on pipe ensures full insertion depth critical for seal integrity.

Step 4: Compression Tightening

For DN20-32mm: Hand-tighten compression caps firmly until resistance increases significantly.

For DN40-63mm: Hand-tighten plus 1/4 turn with strap wrench.

For DN75-110mm: Hand-tighten plus 1/2 turn with appropriate wrench. Do not over-torque.

Step 5: Pressure Testing

Allow minimum 30 minutes for O-ring compression set before pressure testing. Gradually pressurize system to operating pressure and inspect all three ports for leakage. System ready for service upon successful test.

Quality Assurance & Certifications

ISO 9001:2015

Quality management system certification ensuring consistent manufacturing standards and traceability.

ISO 4427 Compliance

Meets international standards for PE piping systems in water supply, ensuring material compatibility.

EN 12201 Certified

European standard compliance for plastic piping systems in water supply, including pressure testing protocols.

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.