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INSTALLATION
PIPING HINTS
GENERAL
This section provides some do’s and don'ts of piping which will aid in obtaining the maximum
efficiency and service from your pump.
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Piping should be independently supported at both the suction inlet and discharge outlet.
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Care should be taken that piping is properly aligned and does not put any strain on the pump
casing.
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The piping should have as few bends as possible.
SUCTION PIPING
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The suction piping should be short and follow a direct route with a minimum number of elbows
and fittings.
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Elbows should not be used at the suction inlet as friction would be greatly increased, resulting
in head loss.
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Excessive friction losses in the suction line could result in pump cavitation, causing poor
performance, noise, vibration, damage to equipment, and possible damage to product.
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Whenever practical, the diameter of the piping at the suction inlet should be increased in size.
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An eccentric tapered reducer should be used in lieu of a straight concentric tapered reducer to
prevent air pockets from forming and impairing pump efficiency. In turn, the eccentric reducer
may be placed at the inlet of the pump and should be positioned so the straight side is up.
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Although positive displacement pumps are self-priming under moderate suction lift conditions,
a flooded suction is always preferable.
DISCHARGE PIPING
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The discharge piping should be short and direct with a minimum number of elbows and
fittings. It is advisable to increase the pipe diameter at the discharge outlet to minimize head
loss.
PRESSURE RELIEF COVER ADJUSTMENT
Tri-Clover's relief cover is designed for added protection of the pump and other processing
equipment. The product flow will stop or is reduced when the head pressure on the discharge
side of the pump exceeds the pressure rating controlling the piston in the relief cover.
The relief cover is designed for use with either manual or pneumatic controls.
To adjust, install a line pressure gauge in the discharge line of the pump as close as possible to
the discharge port. Determine a maximum line pressure rating that is higher than the operating
pressure and adjust as follows:
