PUMPS IN SERIES FOR LONG DISTANCES
Long tubing runs or high vertical lift can be achieved by installing pumps in series. Standard SHURflo Beverage pumps are not
designed to have positive pressure on the inlet side. The SHURflo Vacuum Regulating Valve (VRV) allows the pump to receive
liquid from a pressurized source. By positioning a VRV at the inlet of the secondary pump, incoming pressure is reduced to zero,
permitting syrup to be drawn in under vacuum.
SHURflo can recommend several other methods to meet the requirements for a particular installation, including Pressurized
Inlet Pumps or Accumulators. Contact SHURflo for more information.
INSTALLATION GUIDELINES
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As indicated on the pump, the outlet port is to be mounted up .
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Pumps are to be mounted at the same level or higher than the B-I-B. The best choice is to have the pump
above the B-I-B.
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INLET
tubing from the B-I-B to the pump use; 3/8" I.D. [10 mm] minimum, heavy wall (1/8" [3mm]) clear, NSF
listed vacuum tubing. Inlet tubing should not have excessive length. Tubing that is allowed to drape down can
trap air in the B-I-B creating a potential for pump "sold-out" problems. The maximum vertical distance from
the bottom of the B-I-B to the pump must not exceed 5 ft [1.5 m]. Maximum inlet tubing length is 10 ft. [3 M].
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If plumbing multiple B-I-B’s to a pump, B-I-B's should be "Teed" side-by-side horizontally, rather than one on
top of the other (vertically).
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OUTLET
tubing from the pump to the dispenser should be high pressure rated and NSF listed. Consult
"Pumping Capability" (page 2) for appropiate tubing I.D.
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Always cut CO2 and outlet tubing at least 2 ft. [.6 m] longer to provide a "service loop" so the B-I-B rack can
be moved for cleaning or service.
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Use new (clean), 1/4" I.D. [6 mm], flexible, high pressure, braided tubing from the CO2 / air regulator to the
pump NEVER connect a transfer tank "system" in series with a B-I-B system. Syrup contaminants in old
components may work their way through the air supply causing premature failure of the gas pump. Gas used
to operate pumps MUST be clean and contain no contaminants (syrup, oil, rust, water, etc). Air compressors
may be used with proper particle filters and moisture separators. Air storage tanks should be drained
regularly. Pumps subjected to contaminated air are not covered by warranty. High concentrations of CO2 can
be fatal as it will displace the air from non-ventilated areas. Pumps operated by CO2 must be in ventilated
areas. If placed in a confined area (basement, closet, cooler box, etc.), exhaust fans capable of changing the
room air on a continuous basis should be used.
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All tubing connections must be secured with stainless steel, stepless Oetiker® clamps.
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Cable-tie all tubing securely to prevent kinks or sags that inhibit performance or cause damage to the pump
fittings.