Wavin HD18/22W Hep2O Polybutylene Reducing Tee 22 x 22 x 22mm White

The Wavin HD18/22W Hep2O is a white polybutylene push-fit reducing tee for branching pipework and stepping between pipe sizes in domestic hot and cold water distribution and central heating systems. Its listing on the manufacturer’s page is a 22mm x 22mm x 22mm reduced tee, with both branch ends connecting to 22mm pipe via a 28mm main.

It suits professional plumbers and heating engineers working on new builds, social housing and replacement work, and is also practical for confident DIY users. The joint is made without solder, flux or naked flames, which suits work in confined or occupied spaces. Build quality is Wavin’s Hep2O push-fit design with stainless steel SmartSleeve inserts and a Kitemarked, WRAS-approved fitting.

Key Features

• Reducing tee for branching and stepping between pipe sizes
• Push-fit connection with no solder, flux or open flames required
• In4Sure tactile joint recognition: twist the pipe to feel full insertion
• SmartSleeve 316 stainless steel pipe support inserts
• Hep2O Key system: demounting requires the HepKey tool
• Joints rotate 360 degrees after assembly without breaking the seal
• Connects to Hep2O polybutylene pipe, BS EN 1057 copper pipe, or Wavin Tigris via adaptors
• WRAS approved for drinking water; Kitemarked to BS 7291 Class S and BS EN ISO 15876

Benefits

• Makes branch and step-down connections quickly without specialist soldering
• Flame-free joint reduces fire risk and suits confined or occupied areas
• Tactile check confirms the pipe is fully inserted before you leave the joint
• Tamper-resistant key system keeps joints from being accidentally disturbed
• Plastic-to-copper compatibility allows mixed-material repairs and extensions
• Corrosion-free and quieter in service compared with traditional metal fittings
• Backed by Wavin’s 50-year guarantee against material and manufacturing defects, subject to good installation practice

Technical Specifications

• Part number (MPN): HD18/22W
• Nominal diameter, connections 1 and 2: DN 15 mm
• Nominal diameter, connection 3: DN 20 mm
• Maximum operating pressure at 20 °C: 12 bar
• Material: Polybutylene (PB)
• Connection type: Insert (push-fitting)
• Fitting angle: 90°
• Main colour: White
• Technical lifespan: 50 years
• Gross piece weight: 0.066 kg
• Recyclable: No

What’s in the Box?

1 x Wavin HD18/22W Hep2O polybutylene reducing tee, 22 x 22 x 22mm, white