Geberit Mapress Stainless Steel Adaptor Union Female Thread and Plain End 15mm to 54mm

For a removable joint right next to another fitting, fit a Geberit Mapress 316 Stainless Steel Adaptor Union Female Thread and Plain End. Its plain spigot slots into a Mapress socket, the union lets you split the joint, and the far end is a female thread.

Where Geberit Mapress 316 Stainless Steel Adaptor Union Female Thread and Plain End fits

Picture a pump set where the valve must come off a tee with no room for a stub of pipe. This adaptor plugs straight into the tee, and the female thread takes the male tail of the valve or pump. Later, the union lets you remove that equipment without disturbing the rest of the run.

• 15mm x 1/2″
• 22mm x 3/4″ and 28mm x 1″
• 35mm x 1.1/4″, 42mm x 1.1/2″ and 54mm x 2″
• Plain end, union and female thread

Assemble the threaded part first so no twisting goes through the pressed joint. Use sealant that is safe on stainless, then mark the depth on the plain end and push it into the mating socket. Press with the jaw for that size. Make sure the union is lined up before you close it, because forcing it into line can damage the seal. Note that the union nut material is not stated in the name. More plain end parts are listed in the Geberit Mapress 316 stainless steel category.

Collecting union adaptors in Glasgow

Plumb Parts has a trade counter at 555 South Street, Glasgow G14 0QX, open Mon-Fri 8am-5pm and Sat-Sun 8am-1pm. Online orders are fine too.

Specification

• Brand: Geberit
• Range: Mapress 316 Stainless Steel
• Maker code: 35384 (22mm x 3/4″), 35388 (42mm x 1.1/2″)
• Material: CrNiMo 316 stainless steel 1.4401 (316)
• Connection: Plain spigot to fit a Mapress socket, union, female thread
• Sizes: 15mm x 1/2″, 22mm x 3/4″, 28mm x 1″, 35mm x 1.1/4″, 42mm x 1.1/2″ and 54mm x 2″
• 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

Where does the plain end version save space?

It plugs straight into a tee or elbow socket, so a valve or pump can sit hard against the fitting. That keeps pump sets and valve stations short.

Which thread comes with the 42mm size?

The 42mm adaptor has a 1.1/2″ female thread. The full list runs from 15mm x 1/2″ to 54mm x 2″.

Should the union be done up before pressing?

Make the threaded joint onto the equipment first, then press the spigot, then close the union last. That order stops any twisting reaching the pressed seal.

Datasheets

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