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Stainless steel MegaPress adapter press by male thread fitting

Viega

Viega MegaPress adapter 90245 1 in press x MPT 316 SS 200 psi 250 °F

SKU CH-00HM-E4ZVN

A 1-inch press-to-MPT adapter in 316 stainless steel rated for 200 psi at 250 °F

  • 316 stainless steel resists corrosion
  • Press-to-MPT connection installs without welding
  • 200 psi rating handles high-pressure systems
  • 250 °F max temperature suits hot-water lines
  • 1 in press x 1 in MPT fits standard piping

316 Stainless Steel MegaPress Adapter

This Viega 90245 adapter connects 1 inch press-fit tubing to 1 inch male pipe threads. It is built for installers who need a flame-free, press-tool joint on stainless piping systems. The 316 stainless construction suits potable water, hydronic heating and many industrial fluid lines. No soldering, threading or welding is required on the press end.

Press Connection and Male Thread Practicality

The press end seals with a compatible press tool and jaw, cutting installation time compared to threaded or welded joints. The male pipe thread end mates with standard female-threaded valves, equipment or pipe nipples. Stainless steel resists corrosion in aggressive water chemistry and high-temperature hydronic loops. The fitting arrives ready to press without separate sealant on the press side.

200 psi and 250 °F Operating Limits

Maximum working pressure is 200 psi and the temperature range spans 0 to 250 degrees Fahrenheit. Systems exceeding either limit need a different fitting class or material. The press joint relies on the tool calibration and jaw condition; improper pressing can leak. Installers must verify that the connected tubing and thread sealant also meet the system pressure and temperature.

Highlights

  • 316 stainless steel resists corrosion
  • Press-to-MPT connection installs without welding
  • 200 psi rating handles high-pressure systems
  • 250 °F max temperature suits hot-water lines
  • 1 in press x 1 in MPT fits standard piping

Specifications

BrandVIEGA

Questions about this item

How does the press x MPT interface seal, and what pressure does it hold?

The press connection creates a permanent mechanical seal on the tube, while the male pipe thread mates with standard NPT fittings. The assembly is rated for 200 psi.

What tube and thread sizes must the mating pipe and fitting have to fit this adapter?

Both the press end and the male pipe thread are 1 in, so the tube and the female threaded fitting must each be 1 in nominal size.

What tool and jaw are required to press this 316 stainless adapter, and what step is often missed?

Use a Viega MegaPress press tool with the correct 1 in stainless jaw. The step often missed is verifying the press indicator ring closes fully before pressurising.

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