Viega developed the Mega Press system for joining black iron pipe without threading. It can be used for pipes from 1/2" to 2" for applications like natural gas, water, steam, and compressed air. The system uses hydraulic jaws to press fittings together, and is approved for pressures up to 200 psi and temperatures from -40F to 250F. For steam condensate applications, the steam must be treated with chemicals to balance the pH and prevent harming the o-rings in the fittings.

1. Mega Press
What is this stuff?

2. VIEGA
• Viega is known for their Pro Press non solder method of
joining pipes, fittings and valves.

3. Using a hydraulic clamping jaw

4. Uses
• Use from ½” to 4” copper
• Available for stainless steel 304 and
316
• Potable water
• Fire Sprinklers
• Chilled / Hot water
• Compressed air

5. Now Mega Press
• First to develop use with black iron pipe
• Schedule 5 through Schedule 40
• NO THREADING REQUIRED
• Over 200 different fitting configurations
• Natural Gas and Fuel Oil
• Water applications (chilled and hot water)
• Steam
• Steam condensate
• Compressed air
• Sprinkler

6. Mega Press
• Sizes from ½” to 2 inches
• Unions, flanged connections
• Tees, elbows
• Caps
• Couplings
• Steel threaded adapters
• Compliant with IPC, IMC, UPC & IMC,
ASTM

7. Mega Press
• Water pressure up to 200 psi
• Temperatures from -40 F to 250 F
• Low Pressure steam to 15 psi
• EPDM “O” rings good for most fluids
• Alternate “O” rings in HNBR
(hydrogenated nitrile) higher
temperatures
• FKM (fluorocarbon or Viton) chemicals

8. Mega Press
Mega Press for Natural Gas
with HNBR “O” Ring
Mega Press for fluids

9. Steam Condensate
• We received permission from Germany,
Viega’s home company, to use at St.
Vincent’s on condensate piping.
• We had to ensure balanced pH in the
return condensate would not harm “O”
rings.
• We accomplished by adding chemical
treatment to steam.

10. Steam Condensate
As the steam completes it work and
condenses, carbon dioxide forms and is a
normal by product of the steam (water
vapors).
CO2 + H20 form carbonic acid and lowers
the pH of the steam condensate.
Slight pitch and slow return to boiler
aggravate the pitting and corrosion of the
steam condensate.
Usually use schedule 80 steel pipe.

11. Steam Condensate
• Oxygen introduced by make up water
or leaks in piping add to acidity.
• Elevated temperatures increase
corrosion to piping. Especially at
threaded connections.
• Thus before using Mega Press for
steam condensate, the steam MUST
be treated and a oxygen scavenger
added.
• The factory must approve.

12. This is part of our specs.