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Bronze crimp adapter, straight body, FTG and FNPT ends

Viega

Viega 79430 Bronze Crimp Adapter FTG 1/2 FNPT 1/2

SKU CH-SS8V-T768Z MPN 79430

Bronze crimp adapter connects 1/2 in copper tube to 1/2 in FNPT, rated for 200 psi and 250 Degrees F

  • TypeDrain Components
  • MaterialBronze
  • Bronze construction resists corrosion in potable water systems
  • Straight adapter connects 1/2 in FTG to 1/2 in FNPT
  • EPDM O-ring provides a reliable seal at 200 psi
  • Rated for temperatures up to 250 Degrees F
  • Compact 1 3/4 in length fits tight spaces

Bronze Crimp Adapter FTG 1/2 FNPT 1/2

The Viega 79430 is a straight crimp adapter fitting designed for potable water systems. It connects a 1/2 inch copper tube (FTG) to a 1/2 inch FNPT threaded pipe. The bronze body and EPDM O-ring handle a maximum operating pressure of 200 psi and a maximum operating temperature of 250 degrees F.

Installation and common issues

The fitting uses a crimp connection on the copper side and standard FNPT threads on the other. A calibrated crimp tool and correct copper tubing are required for a watertight seal. Over-crimping or using damaged tubing can cause leaks. Thread sealant must be compatible with bronze and EPDM to avoid O-ring degradation.

Pre-installation checks

Verify that the existing copper tubing is 1/2 inch CTS and suitable for crimp fittings. Confirm the mating threaded component is 1/2 inch FNPT. Ensure the system pressure will not exceed 200 psi and temperature will not exceed 250 degrees F. Check local codes for any restrictions on bronze fittings in potable water applications.

Highlights

  • Bronze construction resists corrosion in potable water systems
  • Straight adapter connects 1/2 in FTG to 1/2 in FNPT
  • EPDM O-ring provides a reliable seal at 200 psi
  • Rated for temperatures up to 250 Degrees F
  • Compact 1 3/4 in length fits tight spaces

Specifications

TypeDrain Components
MaterialBronze
BrandViega
Model79430

Questions about this item

How do I confirm the crimp adapter is sealed correctly after installation?

Pressurise the line up to 200 psi and check for leaks; the EPDM O-ring and bronze body are rated for 250 °F continuous service.

What comes with the adapter and what must I supply?

The box contains the straight bronze FTG 1/2 to FNPT 1/2 adapter with its EPDM O-ring installed; you provide copper tubing, crimp rings and a calibrated crimp tool.

Which connection combination should I select for a half-inch copper-to-thread transition?

Model 79430 is the straight adapter with FTG 1/2 on the tube side and FNPT 1/2 on the thread side — the only version listed for this size.

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