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4 | compressor assembly – GEA Bock FK30 User Manual

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4 | Compressor assembly

4.7 Pipes

Pipes and system components must be clean and dry inside and free of scale, swarf and layers of

rust and phosphate. Only use air-tight parts.

Lay pipes correctly. Suitable vibration compensators must be provided to prevent pipes being

cracked and broken by severe vibrations.

Ensure a proper oil return.
Keep pressure losses to an absolute minimum.

The

discharge and suction line valves have stepped internal

diameters, enabling the use of pipes with standard millimetre and
inch dimensions. The depth of pipe insertion will depend on the
dimension.

The connection diameters of the shut-off valves are designed for

maximum compressor output.

The required pipe cross-section

must be matched to the capacity. The same applies for
non-return valves.

Fig.13: Stepped
internal diameters

4.6 Pipe connections

Valve spindle seal

4.8 Operating the shut-off valves

Before opening or closing the shut-off valve, release the valve spindle seal by approx. ¼ of a turn

counter-clockwise.

After activating the shut-off valve, re-tighten the adjustable valve spindle seal clockwise.

Fig. 14

Fig. 15

Release

Tighten

The required tightening torque for the flange connection is 80 Nm.

ATTENTION! Overheating can damage the valve.

Therefore, remove the pipe supports from the valve before
soldering.

Solder only using inert gas to inhibit oxidation products.