We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Orange ductile iron Clamp-T grooved fitting with threaded branch

Gruvlok

Gruvlok 390171288 Clamp-T 4x2 in Iron 500 psi

SKU CH-8G78-SRZ6M

A grooved ductile-iron Clamp-T fitting with a 2 in female NPT branch, rated 300 psi at 150 °F for Schedule 40 pipe

  • Clamp-T connects 4 in grooved main to 2 in FNPT branch
  • Ductile iron body rated 300 psi at 150 °F
  • Painted orange finish for corrosion resistance
  • Suitable for Schedule 40 pipe in Class 150 systems

Gruvlok Clamp-T 4x2 in Iron 500 psi

The Gruvlok Clamp-T fitting connects a four-inch grooved main line to a two-inch grooved line and a two-inch female NPT branch. It is made from ductile iron with a painted finish and rated for Class 150 service on Schedule 40 pipe. This coupling suits mechanical and fire-protection contractors who need a rigid grooved transition with a threaded outlet.

Thermals noise and power draw

This passive iron fitting generates no heat, produces no noise and draws no electrical power during operation. Its pressure boundary is rated to 300 psi at 150 degrees Fahrenheit, so thermal expansion in hot-water systems stays within the design envelope without active cooling. Installers simply torque the bolts to the specified value and the joint remains sealed.

Highlights

  • Clamp-T connects 4 in grooved main to 2 in FNPT branch
  • Ductile iron body rated 300 psi at 150 °F
  • Painted orange finish for corrosion resistance
  • Suitable for Schedule 40 pipe in Class 150 systems

Specifications

BrandGRUVLOK

Questions about this item

How do I install the 4 in grooved Clamp-T on Schedule 40 pipe, and what step is often missed?

Cut the pipe square, roll the groove to the correct depth, lubricate the gasket, seat the housing halves evenly, and torque the bolts alternately to the specified value; the step most often missed is verifying the groove diameter and depth with a gauge before assembly.

What maintenance or replacement will the ductile iron Clamp-T with 2 in FNPT branch need over time?

Inspect the painted exterior and the gasket periodically for corrosion or wear; replace the gasket if it hardens or leaks, and recoat any scratched paint to maintain the Class 150 pressure rating at 300 psi maximum operating pressure.

More in Fittings & Couplings

Similar items

Same shelf, same checkout — eight coins and a 30-minute rate lock.