Geberit Mapress Stainless Steel Adaptor Union Male Thread 15mm to 54mm

Connecting stainless press pipe into a female threaded port while keeping it removable is easy with the Geberit Mapress 316 Stainless Steel Adaptor Union Male Thread. A press socket, a union and a male thread make up the fitting.

Jobs for the Geberit Mapress 316 Stainless Steel Adaptor Union Male Thread

Typical spots include female ports on pump bodies, valves, calorifier bosses and expansion vessel connections. If the equipment fails, undo the union and the pipe stays where it is. That cuts the time spent on a breakdown and means the run does not need re pressing.

• 15mm x 1/2″ and 15mm x 3/4″
• 22mm x 1/2″, 22mm x 3/4″ and 22mm x 1″
• 28mm x 1″ and 35mm x 1.1/4″
• 42mm x 1.1/2″ and 54mm x 2″

Screw the male thread into the port first, sealing it with something suitable for 316 stainless steel. Grip the hex nearest the thread, not the union nut, while tightening. Once that is done, prepare the pipe, mark the depth, push home and press. Close the union last and do not overtighten it. The name does not say what the nut is made of, so if you need an all stainless union, look at the version supplied with a stainless nut. Every version sits in the Geberit Mapress 316 stainless steel listings.

Male union adaptors in Glasgow

Stainless union adaptors are sold at Plumb Parts, 555 South Street, Glasgow G14 0QX, during Mon-Fri 8am-5pm or Sat-Sun 8am-1pm, and online.

Specification

• Brand: Geberit
• Range: Mapress 316 Stainless Steel
• Maker code: 35330 (15mm x 1/2″), 35331 (15mm x 3/4″), 35336 (22mm x 1″), 35339 (42mm x 1.1/2″), 35340 (54mm x 2″)
• Material: CrNiMo 316 stainless steel 1.4401 (316)
• Connection: Press Fit socket (black CIIR seal ring), union, male thread
• Sizes: 15mm x 1/2″, 15mm x 3/4″, 22mm x 1/2″, 22mm x 3/4″, 22mm x 1″, 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

Is this the same as the C/W SS nut male union?

It does the same job, but the listing does not say the nut is stainless. If the specification calls for stainless throughout, order the C/W SS nut version.

Can it connect to an expansion vessel?

Yes, if the vessel has a female threaded port that matches. The union then lets the vessel be changed without cutting into the pipework.

What jaw presses the 35mm x 1.1/4″ size?

Use the 35mm Mapress jaw, because the press socket is sized to the pipe and not the thread. The 1.1/4″ figure only tells you the male thread.

Datasheets

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