Dixon 3030SQ Installation & Operating Instructions Manual - Page 3
Browse online or download pdf Installation & Operating Instructions Manual for Control Unit Dixon 3030SQ. Dixon 3030SQ 9 pages. Bayco 3" swing check valves, 3" swing check square flange with molded flapper/with high heat silicone/metallic flapper, 3" swing check ttma round flange with molded flapper/with high heat silicone/metallic flapper, 3" swing check npt threaded ends with mo
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Inspection Procedure: The complete valve assembly may be removed and replaced without
removing the valve body from the system. Please note that the shafts and springs are
designed for left and right orientation, ensure that these components are located correctly.
The colored spring should be used in conjunction with the right hand threaded shaft.
a) Remove the inspection cap/cover and hand operate valve to ensure springs are in good
working order and flapper seats properly without restriction.
b) Whilst pulling the flapper forwards, pull upwards on the valve yoke to withdraw the
complete flapper assembly (take care to ensure that springs are secure during valve
withdrawal).
c) Inspect valve seat and valve for wear or gaps.
d) Inspect for product stuck in flapper assembly or valve seat causing the flapper to hang
open.
Should problems be encountered replace valve immediately.
If springs are replaced, please ensure that, after replacement, the valve assembly is free to
swing to the fully open position (90°) without excessive resistance.
resistance is felt:
1. Ensure that the springs are fully pressed onto the shaft
2. Reduce spring pre-load by moving torsion spring legs to alternative pre-load stop.
The correct amount of pre-load allows the valve to be freely opened to 90°.
IMPORTANT: Your Bayco 3030 / 3031 swing check valve is designed for minimal flow
restriction and low pressure drop during operation. The valve return springs are designed
to provide sufficient pre-load to return the valve to the closed position with only limited
pre-load. Excessive pre-loading of the return springs may lead to premature failure.
Inspection Frequency: Swing check valves should be routinely inspected as part of a
preventative maintenance schedule for dry bulk tankers. The units should be given, at a
minimum, a visual/manual inspection every 2-3months.
Do not use anything other than genuine Bayco parts in your Bayco swing check valve.
Repair kits are available for all replaceable parts (refer to parts breakdown for details).
Use of non-approved or modified parts can result in a hazardous condition due to
operating difficulties or operation malfunction. Modification or tampering will void the
product warranty.
CAUTION: Do not attempt to inspect the valve while in use; this may result in severe
damage or injury.
DIXON BAYCO WARRANTY: For complete Warranty information, please refer to the inside
back cover of the latest Dixon Catalogue.
3
If excessive
090083 R12