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Paper Mill Improves Equipment Reliability and Safety with Chesterton® Solutions

Challenge

Background

A paper mill was leaking from the gland bolts on a 4.25″ washer vat re-pulper used to break down the defective paper to be reprocessed.

The gland bolts were difficult to access, making packing adjustments challenging and safety concerns while the equipment ran.

Goal

To increase the length of continuous service to support the plant cycle and improve safety.

Front view of stuffing box with safety guard during operation.

Front view of stuffing box with safety guard during operation.

 

Solution

Application

  • Three rings of ½” Chesterton 377 CarbMax™ packing were installed.
  • Two bolts were fitted with Chesterton AMPS™ double cylinder units and pressurised to 2 bar g (30 psi).

The addition of a pressure regulator allowed for adjustments from outside the safety guard and helped ensure equal pressure was applied to both bolts.

Equipment before AMPS unit installation. It was very difficult to access bolts to make any adjustment, and unsafe to do while running.

Equipment before AMPS unit installation. Accessing bolts to make adjustments and unsafe to do while running was difficult.

 

Results

Less Leakage and Greater Safety

After installation and equipment restart, the AMPS technology helped seal the equipment with minimal leakage.

The customer can now adjust the packing while the equipment is running safely.

The customer is very happy with the results and does not need to make any additional adjustments.

Equipment with AMPS units installed on both bolts, enabling constant, even loading and offering the ability to safely make adjustments.

Equipment with AMPS units installed on both bolts, enabling constant, even loading and offering the ability to safely make adjustments.

 

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