Geberit Mapress Stainless Steel Reduced Branch Tee 15mm to 108mm

On most stainless jobs the branch is smaller than the main, so the Geberit Mapress 316 Stainless Steel Reduced Branch Tee is used a lot. It presses onto the run at both ends and onto a smaller pipe on the branch.

Geberit Mapress 316 Stainless Steel Reduced Branch Tee sizes

• 22mm runs with 15mm branch
• 28mm runs with 15mm or 22mm branch; 35mm runs with 15mm, 22mm or 28mm branch
• 42mm runs with 15mm to 35mm branch; 54mm runs with 15mm to 42mm
• 76mm runs with 22mm to 54mm; 89mm with 22mm, 28mm, 35mm, 42mm or 76mm; 108mm with 22mm to 89mm
• Also 28mm x 22mm x 22mm, 35mm x 22mm x 28mm, 35mm x 28mm x 28mm, 42mm x 22mm x 35mm and 42mm x 28mm x 35mm

Read the size as run, run, branch. Most are a straight main with a smaller branch, but a few reduce on one run end as well. So write down all three sizes before you order.

Prepare each pipe as usual, mark the depth and push the three pipes in. Point the branch the right way, then press each socket with the matching jaw. Check every mark afterwards. Equal tees and reducers are in the Geberit Mapress 316 stainless steel category.

Reduced tees over the Glasgow counter

Plumb Parts sells these at 555 South Street, Glasgow G14 0QX, open Mon-Fri 8am-5pm and Sat-Sun 8am-1pm. Online orders for the reduced tee are taken too.

Specification

• Brand: Geberit
• Range: Mapress 316 Stainless Steel
• Maker code: 31206 (22mm x 22mm x 15mm), 31209 (28mm x 28mm x 15mm), 31211 (28mm x 28mm x 22mm), 31212 (35mm x 35mm x 15mm), 31214 (35mm x 35mm x 22mm), 31215 (35mm x 35mm x 28mm), 31219 (42mm x 42mm x 28mm), 31220 (42mm x 42mm x 35mm), 31224 (54mm x 54mm x 28mm), 31225 (54mm x 54mm x 35mm), 31226 (54mm x 54mm x 42mm), 31239 (89mm x 89mm x 42mm), 31246 (108mm x 108mm x 35mm), 31247 (108mm x 108mm x 42mm)
• Material: CrNiMo 316 stainless steel 1.4401 (316)
• Connection: Three Press Fit sockets, black CIIR seal ring
• Sizes: 48 combinations from 22mm x 22mm x 15mm to 108mm x 108mm x 89mm (see the size options)
• Max pressure: 16 bar for drinking water and heating water
• Max temperature: 100°C for drinking water and heating water without antifreeze
• Suitable for: Hot and cold drinking water, heating and cooling circuits, on Mapress 316 Stainless Steel system pipe

Common Questions

How do I make a joint with a Mapress stainless reduced branch tee? It’s a press fitting with an M contour, so it’s made with a press tool and jaws to suit the size. The blue indicator shows whether the joint has been pressed, and an unpressed joint will leak when you pressure test, so it’s easy to spot.

How do I order the right size reduced branch tee? Check all three sizes, for example 22mm x 22mm x 15mm, where the branch is smaller than the run. Some sizes reduce at one end as well, so read the list carefully.

Can the Mapress stainless reduced branch tee go on heating? Yes, stainless Mapress is listed for heating and cooling water as well as hot and cold drinking water, and it’s rated to 16 bar.

Can you use push-fit on 316 stainless steel Mapress pipe? This tee is a press fitting only. On Mapress stainless system pipe, stick with Mapress press fittings made with the right press tool and jaws.

What is the Mapress reduced branch tee made of? It’s CrNiMo 316 stainless steel, grade 1.4401. The added molybdenum helps it resist rust and pitting.

How do I keep the fittings clean before fitting? Each fitting has a protective plug that keeps grit and dirt out until you’re ready to use it, so leave it in until then.

Datasheets

• Geberit Mapress 316 Stainless Steel Application Overview (Liquid Media) (PDF)