Corken B166, Инструкция по установке, эксплуатации и обслуживанию

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Features of the B166 External
Automatic Bypass Valve
The CORKEN B166 external bypass valve is a patented,
dual purpose, automatic priming and differential valve
designed for high-pressure volatile liquid service. This valve
may be used with stable liquids as well.
The B166 external bypass valve was also designed to work
in conjunction with CORKEN’s Coro-Flo
®
regenerative
turbine pumps but may be used with centrifugal pumps and
others as well.
To ensure optimum performance of the external bypass
valve and the entire pumping system, follow the instructions
in this manual.
Chapter 1—Installation of the B166
External Automatic Bypass Valve
Proper installation of the CORKEN B166 external bypass
valve ensures optimum performance of the pump and
external bypass valve. Install the B166 external bypass
valve on the discharge side of the pump in either a vertical
or horizontal position. All CORKEN Coro-Flo
®
turbine
pumps have a 3/4" NPT opening in the discharge nozzle for
piping this valve. When using other pump designs without a
3/4" NPT opening, a tee must be installed in the discharge
line. The discharge piping of the bypass valve should
connect to the vapor section of the supply tank using an
excess flow valve and
not a back check valve . Do not
connect the outlet piping of the external bypass valve
to the inlet piping of the pump . A typical installation
is shown in Figure 1.1. The recommended pipe sizes for
discharge lines are given in the table below. For distances
of 50 feet or more, the next larger pipe size should be used.
Pipe Sizes for Discharge Line
Flow Rate
Pipe Size by Model Number
B166B-.75 B166B-.1
Up to 30 GPM 3/4" —
Up to 40 GPM — 1"
1 .1 Operation of the B166 External
Automatic Bypass Valve
Stationary Applications:
The differential pressure setting of the B166 external
bypass valve is adjustable. The range of differential
pressure depends on the size of the spring installed in
the bypass valve. When the bypass valve ships from
the CORKEN factory, a tag identifying the spring size
is attached to the valve bonnet. The table below shows
the part number and differential pressure range for each
spring. All of the springs are interchangeable with each
valve size.
Valve Model Spring Number
Differential Pressure
(PSIG)
B166
1138 25–60
1193 50–150
1193
100–225
1313
After the external bypass valve has been installed, it must
be set properly.
1. Install liquid-filled pressure gauges equipped with a
needle valve or snubber in the following locations:
a. Pump discharge gauge port or inlet side of the
bypass valve.
b. Supply tank and/or pump suction.
2. Attach an ammeter to a motor lead of the electric motor.
Figure 1.1: Typical installation. Figure 1.2: B166 with priming function.
Delivery line
shut-off or
pressure build
up is so high
that valve
opens and
relieves
capacity back
into supply
tank. Liquid from
supply tank
seeking its
level in pump
and bypass
piping. No circulation
- all pump
capacity
going to
delivery.
INLET
LIQUID VAPOR VAPOR and/or LIQUID
INLET INLET
OUTLET OUTLET OUTLET
FIG. 1 Relieving Operation
OPEN
FIG. 2 Pumping Operation
CLOSED
FIG. 3 Priming Operation
OPEN
Discharge line
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