Bran+Luebbe Product Equipment Troubleshooting: Flow Rate Unsteady

Problem:

Causes

• Impurity of the flow medium:

Flush pipework; if necessary, install strainer.

• Valve seat, valve ball or cone damaged:

Regrind or replace valve.

• Varying supply pressure or viscosity:

Check operating conditions.

• Stuffing box is leaking:

Tighten stuffing box: check piston for wear and if necessary, replace packing.

• Gas or air in the product:

Increase suction pressure.

• Wrong stroke length:

Check and, if necessary, recalculate stroke length.

Diaphragm Pump:

• Vent valve, replenishing valve, or relief valve are leaking

Clean valves; rework damaged parts.

• Gas or air in product or hydraulic chamber:

Vent product or hydraulic chamber.