You may also like
20853 Viega ProPress adapter flange 2 - pc Smart Connect technology Copper, 2-1/2'' - 4
Manufacturer Resources
Product Specs
- Connection Type:
- P - BP
- Material Type:
- Copper
- Product Dimension:
- 2-1/2'' - 4
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Adapters
- Product Type:
- Adapter
- Product Length:
- 3.787"
- Product Height:
- 7.126"
- Product Weight:
- 6.762 lbs
- Product Width:
- 7.126"
- Product Material:
- Copper
Viega 20853 – Frequently Asked Questions
1) What does the Viega 20853 ProPress adapter flange connect to on each side?
The Viega 20853 is a two-piece adapter flange with a ProPress copper press end on one side and a bolted flange face on the other, so it takes you from copper tube to a flanged connection such as a pump, valve, or piece of equipment. Connection type is listed as P-BP (press to bolted flange). The press side is copper, so it goes on copper tube, not on steel or PEX.
2) What size copper pipe does the Viega 20853 press flange fit?
The 20853 is listed at 2-1/2 inch to 4 inch. It is a press-to-flange adapter for large diameter copper tube in that range, which is the territory where pressing replaces brazing on mains, risers, and pump connections.
3) Do I need to braze or solder the Viega 20853 flange onto copper?
No torch needed on the pipe side. The 20853 uses a ProPress copper press connection with Smart Connect technology, so it is made cold with a press tool and the correct large diameter jaw or ring. Smart Connect leaves an unpressed fitting detectable during pressure testing, which is how you catch a missed joint before the wall closes up. The flange side is bolted, so you will still supply the gasket and bolt set to match the mating flange.
4) Is the Viega 20853 flange copper or bronze, and will it work on my copper system?
Material is listed as copper, which keeps it dissimilar-metal free on a copper potable water or hydronic system. It is made in Germany. Pair it with a gasket rated for your service temperature and fluid.
5) Should I use a press adapter flange or a threaded flange adapter on a 3 inch copper main?
On copper in the 2-1/2 to 4 inch range, a press adapter flange like the 20853 is the faster route: one cold press on the tube, then bolt to the equipment flange. A threaded adapter means cutting or buying threads and dealing with a transition fitting, and a brazed flange means a torch on large diameter copper in an occupied building. Choose the press flange when you are landing a pump, backflow preventer, or valve with a bolted flange face onto copper tube.
6) What is the exact part number for the Viega ProPress two-piece copper adapter flange?
Order it as Viega 20853. The UPC is 691514208534. It is a two-piece copper ProPress adapter flange covering 2-1/2 inch to 4 inch.
7) Does the Viega 20853 come with bolts and a gasket?
The 20853 is supplied as the two-piece adapter flange itself. Flange gaskets, bolts, and nuts are sized to the mating flange on the equipment you are connecting to, so plan on ordering those separately along with the correct large diameter ProPress jaw or press ring for the tube size you are joining.
8) How much does the Viega 20853 press flange weigh and how big is it?
It weighs 6.762 lbs and the published dimensions are 7.126 inches height, 7.126 inches width, and 3.787 inches length. Worth knowing on a riser or ceiling install, because a flange of that mass wants support near the joint rather than hanging off the tube.
How fast can I get the Viega 20853 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
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 20853 come with a warranty?
Absolutely. The Viega 20853 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Viega 20853?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Viega 20853 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.