FOURATH®4: the premium feeder expendables series

The further development of refractory compositions is a challenge that RATH is taking on with great commitment:

The premium feeder expendables series is the next generation of the previous RATH 3xx feeder expendable series: a new product series based on an innovative formulation which has been exclusively developed and produced by RATH. It has been put through its paces in our laboratories and has successfully passed the first glass factory trials over the last 2 years.

From better crack and thermal shock resistance to longer service life

The new premium expendable series is produced using a hybrid technology that brings some significant advantages.

While the previous 3xx mixes – like the well-known 333, 315, 301, 338, 345, etc. were produced using the slipcasting technique, the FOURATH®4 mixes are manufactured using a so-called hybrid technology. Casting is no longer done by slipcasting; instead, a special vibro-casting technology is used: The entire manufacturing process was converted from clay-bonded slipcasting to chemically bonded vibrocasting.

We have selected ultra-premium raw materials to keep the impurity level as low as possible, improve thermal shock resistance, reduce open porosity and prevent blister formulation as much as possible. Glass quality is expected to improve with less devitrification, less infiltration and a better wear rate.

This special technology brings some significant advantages to our customers:

Improved product quality due to:

• Less dissolution of the refractory material
• Less infiltration of the glass
• Better wear rate
• Less blistering

It is a more compact family of mixes with:

• Lower porosity
• Better surface quality
• Better thermal shock resistance, i.e. better
• Crack resistance

Along these lines, the new FOURATH®4 product family offers container glass makers increased service life and less production downtime!

Important! The service life of tubes is significantly improved by the new manufacturing technology. The additional grinding of the tube’s outer surface can be avoided, while still maintaining tight tolerances, even for NNPB bottle production!

We have:

• the largest drawing and mold park
• the widest portfolio of mixes
• selected mixes for different glass qualities
• worldwide presence
• locations in the USA and EU

And we are the strategic partner of Bucher Emhart Glass


RATH offers a wide range of mixes for different production series to find the most suitable refractory spare parts for your glass quality and throughput rate.


Example 1: If you are producing container glass with long runs, you’ll achieve the best performance by reducing feeder downtime:

Spout: 473 zirconia or isostatic pressed chrome inserted spout with 301/401 spout body
Tube: 420 / 301
Plunger(s): 420 / 301
Orifice ring: 420 / 301
Spout burners: 338
Spout front and rear cover: 338 / 345
Spout insulation: double layer microporous kit, EmCast 25


Example 2: If you work with short runs and frequent job changes in container glass production, the goal is to achieve the best performance, the lowest cost level, and to reduce blistering:

Spout: 301 / 315
Tube: 420 / 333 / 433
Plunger(s): 420 / 315 / 433
Orifice ring: 311 / 345 / 433 / 314 / 315 / 420
Spout burners: 338
Spout front and rear cover: 338 / 345
Spout insulation: double layer microporous kit, EmCast 25