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Zinc nickel-plated carbon steel reducing female adapter, straight, 1 in press to 3/4 in FNPT

Viega

Viega MegaPress 4812 Carbon Steel Reducing Female Adapter 1 in x 3/4 in

SKU CH-R9PN-2H6KT

Carbon steel press-to-NPT reducing adapter joins 1 in pipe to 3/4 in thread at 200 psi and 250 °F

  • TypeReducing
  • Press-fit installation saves time on non-potable water lines
  • Reduces 1 in pipe to 3/4 in FNPT thread in one fitting
  • EPDM O-ring seals up to 200 psi working pressure
  • Rated for 250 Degrees F maximum operating temperature
  • Zinc nickel-plated steel resists corrosion in harsh environments

Viega MegaPress Reducing Adapter

The Viega MegaPress 4812 carbon steel reducing female adapter joins a 1 in press-fit pipe to a 3/4 in FNPT thread in non-potable water systems. Its straight adapter shape and zinc nickel-plated finish suit commercial and industrial plumbing installations.

Sustained pressure and temperature performance

The fitting is rated for a maximum operating pressure of 200 psi and a maximum operating temperature of 250 Degrees F. The EPDM O-ring maintains its seal under continuous thermal cycling and mechanical vibration without degradation.

Press-fit to FNPT transition sizing

The 1 in press end and 3/4 in female thread determine whether this adapter matches the pipe schedule and thread standard on site. Verify both dimensions before ordering because no other size combination is offered in this model.

Highlights

  • Press-fit installation saves time on non-potable water lines
  • Reduces 1 in pipe to 3/4 in FNPT thread in one fitting
  • EPDM O-ring seals up to 200 psi working pressure
  • Rated for 250 Degrees F maximum operating temperature
  • Zinc nickel-plated steel resists corrosion in harsh environments

Specifications

TypeReducing
BrandViega

Questions about this item

Does the zinc nickel-plated carbon steel fitting generate noticeable heat or noise when pressurised to 200 psi all day?

The MegaPress 4812 adapter is a passive metal fitting with no moving parts, so it produces no noise or heat of its own; temperature stays within the 250 °F rating and pressure is contained at 200 psi.

What press tool and jaw set must I already own to install the 1 in press-fit end?

You need a compatible press tool and a 1 in MegaPress jaw or ring that matches the carbon steel profile; the 3/4 in FNPT side threads onto standard NPT pipe or valves.

Will the EPDM O-ring seal reliably against older black-iron pipe threads on the 3/4 in FNPT side?

The 3/4 in FNPT connection follows standard NPT threading, so it mates with existing black-iron or galvanised pipe threads; the EPDM O-ring seals only the 1 in press-fit joint.

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