TPi May 2015

Move the valve down between the flanges

Rubber expansion joints, for use in dismantling, misalignments, and thermal movements

Extreme misalignments within a valve pit

would equate to a life of either 20 years or 15 years, not 50 years as claimed.

• Various grades of rubber to suit the medium, the design pressure and temperature. • All surfaces in contact with the medium are in rubber, so there is no need for epoxy coatings or any other surface protection. • The expansion joint/dismantling joint can be removed and installed many times without having to change any seals etc. • EPP can supply these joints up to 4m or 157" and pressures up to 38 bar or 551 psi. The larger diameters are in lower pressures.

3 – Corrosion protection Metal components are coated with epoxy coatings and other surface protections. The nuts and bolts are Sheraplex coated to WIS 4-52-03, offering long-term protection against corrosion, impact and abrasion to ensure continued reliable protection to corrosion, impact and abrasion, and therefore ensured continued reliable performance (as discussed previously).

Valve dismantling Rubber expansion joint – main advantages

• Easy to install – simply adjust the tie rod nuts on the inside and on the outside of the flange, then compress or extend the expansion joint to suit the gap. • All face-to-face gaps and misalignments can be accommodated by designing the rubber expansion joint to take up the thermal movements and vibrational movements along with any installation misalignments.

Engineered Piping Products – UK sodonnell@engineered-piping-products.com www.engineered-piping-products.com

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May 2015 Tube Products International