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
Legend Valve 3-inch dielectric steam gasket coupling

Legend Valve

Legend Valve 301-440 3" D.U. Steam Gasket coupling

SKU CH-M92N-NMMG3

Three-inch dielectric gasket isolates steam lines to prevent galvanic corrosion

  • 3" dielectric steam gasket for reliable coupling
  • Legend Valve brand ensures quality manufacturing
  • New condition guarantees full performance
  • California Proposition 65 warning for cancer risk
  • California Proposition 65 warning for reproductive harm risk

Legend Valve 301-440 Steam Gasket

This Legend Valve 301-440 is a 3-inch dielectric steam gasket coupling designed for plumbing systems carrying steam. It provides a sealing interface between flanges while electrically isolating the joint to prevent galvanic corrosion. The component is supplied new for maintenance or new-build installations.

Suited for dielectric flange joints.

Plumbers and maintenance engineers joining steam lines where dielectric isolation is specified will find this gasket matches the requirement. Buyers who need a standard steam gasket without the dielectric property should look at alternative sealing products. The Proposition 65 notice indicates the material contains listed chemicals.

3-inch dielectric steam specification

The decisive specification is the 3-inch dielectric steam gasket rating, which confirms both the nominal pipe size and the electrical isolation function. Verify that the system flange dimensions and service conditions match this rating before ordering.

Highlights

  • 3" dielectric steam gasket for reliable coupling
  • Legend Valve brand ensures quality manufacturing
  • New condition guarantees full performance
  • California Proposition 65 warning for cancer risk
  • California Proposition 65 warning for reproductive harm risk

Specifications

BrandLEGEND VALVE

Questions about this item

What pipe size and flange type does the 301-440 gasket fit?

The 301-440 is a 3-inch dielectric steam gasket designed for dielectric union flanges in steam piping.

Will this gasket work with standard iron or steel steam flanges I already have?

It is made for dielectric union connections, so it seals between dissimilar metals on a 3-inch steam line.

How can I confirm the 301-440 is seated correctly after installation?

With the system pressurised, check the joint for steam leaks; a properly seated gasket shows no visible escape at the flange.

Also in this aisle

People compared these

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