Grinnell catalogue - Grinnell - #10

The construction of tunnels and bridges always requires a great deal of temporary piping. Piping needed to provide compressed air and water for drilling equip­ment. With Grinnell couplings and fittings, a quick method is offered to erect and dismantle great distances of piping with little time involved. Slurry drain lines to transport sand, rock and water are often concrete lined to prevent premature wear of the piping system.

By using Grinnell couplings, rota­tion of the pipework to ensure maximum use of the available lining has become very easy. Just loosening the bolts and nuts on two couplings offers the ability to rotate the pipe (never remove any piping components nor correct or modify any piping deficiencies without first depressurizing and draining the system).

In tunnels or on bridges, Grinnell grooved products are used for drainage, drinking water, compressed air and fire protection. Here, flexible couplings are used enabling the pipework to follow changes in direction and the general course of the tunnel or bridge.

In mining, safety is the number one issue. Grinnell grooved products can be installed without having to use welding equipment or torches in a potentially

hazardous environment. Here too, flexible couplings offer the ability to follow the terrain, without having to use special fittings to compensate for misalignment. By loosening two couplings, pipe lines can be replaced or modified and segments can be added without increased down time.

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