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25781 Viega MegaPressG flange Smart Connect technology Carbon steel, 1-1/2''
Manufacturer Resources
Product Specs
- Connection Type:
- P
- Material Type:
- Carbon Steel
- Product Dimension:
- 1-1/2''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Tees
- Product Type:
- Tee
- Product Length:
- 5.787"
- Product Height:
- 3.886"
- Product Weight:
- 4.011 lbs
- Product Width:
- 3.886"
- Product Material:
- Carbon steel
Viega 25781 – Frequently Asked Questions
1) Is the Viega 25781 MegaPressG fitting rated for gas or for water?
MegaPressG is Viega's gas line press system, and the 25781 is a 1-1/2 inch carbon steel MegaPressG fitting. The G suffix is what separates it from standard MegaPress used on water and hydronic lines, and the two systems use different sealing elements, so don't mix them on the same job. Anyone specifying this on a fuel gas line should be pressing it with a gas-rated MegaPress jaw set in the matching 1-1/2 inch size.
2) What pipe size and pipe material does the Viega 25781 MegaPressG fitting connect to?
It is a 1-1/2 inch carbon steel press fitting, so it goes onto 1-1/2 inch black iron or carbon steel pipe. Carbon steel press fittings are matched to the pipe metal, so this is not the part for copper or stainless runs. No threading and no welding, the connection is made by pressing the fitting onto plain-end pipe.
3) What does Smart Connect technology on a Viega MegaPressG fitting actually do for me on a pressure test?
Smart Connect is built into the 25781 and it is a leak path, not a seal. An unpressed fitting deliberately leaks during test so you find it before the walls close up. That is the whole point on a gas line: on a long run with dozens of connections, the test tells you which joint the crew missed instead of leaving you to walk every one of them.
4) How much room do I need to fit a 1-1/2 inch Viega MegaPressG fitting in a tight chase?
The 25781 measures 5.787 inches long by 3.886 inches high by 3.886 inches wide. That is the fitting body only, so add clearance for the press jaw to close around it. In a shallow chase or a joist bay, the jaw swing is usually what runs out of space first, not the fitting.
5) Do I need to order a specific press tool jaw for the Viega 25781, or will my existing jaws work?
The fitting itself is all you get, and a 1-1/2 inch MegaPress connection needs the matching 1-1/2 inch MegaPress jaw or ring and actuator. Smaller ProPress jaws for copper will not press it. Order the fitting and confirm your crew's tool has the 1-1/2 inch MegaPress jaw on the truck before the day of the tie-in.
6) How heavy is the Viega 25781 press fitting for hanger and support spacing?
4.011 lbs each. On a 1-1/2 inch carbon steel gas run that is meaningful dead load where several fittings land close together, so keep a hanger near the fitting cluster rather than relying on the pipe span alone.
7) Where is the Viega 25781 MegaPressG fitting made, and what part number do I order it by?
Made in Germany, and it is ordered as Viega part number 25781. Distributors and spec writers pulling a submittal should use that MPN, since MegaPressG carbon steel fittings run a separate number series from standard MegaPress in the same size.
How fast can I get the Viega 25781 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Viega 25781 come with a warranty?
Absolutely. The Viega 25781 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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