Dixon 3030SQ-SSP Посібник з монтажу та експлуатації - Сторінка 2
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Important: To properly operate and maintain your Bayco 3030 / 3031 swing check valve, the
following instructions are provided. Please read with care as improper handling or
maintenance may cause a hazardous condition.
Caution: Do not modify your Bayco Swing Check Valve for any reason. It could result in a
hazardous condition causing operating difficulties or malfunction.
tampering will void the product warranty.
Installation: Bayco swing check valves are properly adjusted, tested and ready to use upon
leaving the factory. Swing check valves are designed to be tough and to provide long
service with reasonable care and handling.
Ensure arrow is pointing downstream of product flow when installing. Apply appropriate
gasket for square-flanged (3030SQ / 3031SQ) and round-flanged (3030RD / 3031RD)
models.
Temperature:
recommended for direct blower mounted service. For direct blower mounted service use
3031 (or 3030-SSP) series swing checks valves.
INSPECTION / MAINTENANCE: Swing check valves can fail to operate if not properly
maintained. Frequently check for damage, loose or missing parts.
Swing check valves assure one-way airflow during the off loading or unloading of
product. Swing check valves prevent back flow of product into the blower or piping
system. These safety devises consist of a simple flapper valve that swings clear of the air
stream during the normal off-loading operation, but will immediately close when there is
an air stoppage or airline pressure reversal. Once installed, the valves are often ignored.
However, they are a crucial element in the proper operation of the dry bulk air transfer
systems and the protection of expensive blower equipment.
Swing check valve simplicity and historical durability are probably the reason for
inspection complacency. But, swing checks are subject to temperature extremes and
vibration fatigue that can affect wear and longevity. Wear in particular can result as
flapper and hinge mechanisms vibrate constantly during road travel. Also remember that
blowers raise intake air temperatures by as much as 200F. That means if the outside is
100F, then airline plumbing (including swing checks) can reach 300F. High temperatures
combined with pulsation stress from the blower and road travel vibration creates a hostile
working environment that warrants performance inspections on a regular basis.
There are two basic ways to inspect swing checks: (a) visual/manual, on the tanker and
(b) removed from tanker, on a test stand.
Bayco 3030 series swing check valves with molded flappers are not
2
Disassembly or
090083 R12