Toro Bermad Valves Data Sheet
Micro-Irrigation
Performance:
• Flow range 35 to 2400 GPM
Bermad Valves
Application:
Bermad plastic and metal control valves have cutting edge
features which ensure optimum performance and high efficiency
over a long life cycle. The valves are designed to provide control
solutions for irrigation projects in micro irrigation, sprinklers,
pump control and other applications. This versatile family of
valves provides a full range of sizes, pressure ratings and options
to meet the demands of today's most complex irrigation systems.
• Operating pressure range 5 to 230 psi
1
• Valve sizes from 1
⁄2" to 10"
• Hydraulically operated diaphragm valves with 3 way control
Options:
• Manual on/off or Electric on/off
• Pressure Reduction- maintains constant downstream pressure
• Pressure Sustaining- maintains constant upstream pressure
• Quick Pressure Relief- minimizes damage from water hammer
• Options can be combined to create the optimum valve
for each application
Features:
• Valve body and diaphragm design results in low friction
loss and low energy use
• User friendly design allows in-line maintenance and
simple service
Plastic Valves
• Engineered plastic valves for light weight
and corosion resistance
• Threaded or articulated flange valves
available for easy installation
• All typical irrigation options available
• Engineered materials provide chemical resistance for long life
• Diaphragms operate under low flow conditions with
excellent regulation performance
• Regulating pilots are responsive to small pressure
changes, enabling constant, accurate control
Metal Valves
• Iron valves with weather resistant coating
provide durability
• Threaded or flanged connections available
• All possible valve configurations available
High-Performance Plastic Valves
Made from industrial grade, durable glass-filled
nylon, Bermad plastic valves are engineered to
withstand rough service conditions and are
resistant to cavitation and chemical attack.
The Y pattern valve body together with a one
iece diaphragm provides a look through
p
passage resulting in ultra high flow capacity
and minimal friction loss.
Features Benefits
Lightweight construction Easy to ship and move in portable irrigation systems
Chemically resistant engineered plastic
Remote control through a wide range of
electric solenoids or hydraulic command.
Low friction losses Reduced energy cost
Low flow and low pressure operation
Plastic Manual Electric Pressure Reducing Pressure Sustaining Low Friction Loss Low Maintenance
105 Series
110 Series
120 Series
12055 Series
130 Series
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Provides long life in harsh environments and
corrosive injection applications.
Saves labor and optimizes water application
through accurate scheduling
Maintains peak uniformity in systems with flow
and pressure variations
Hydraulic Control Metal Valves
At the leading edge of control valve design, Bermad
metal valves combine simple and reliable construction
with superior performance. The diaphragm performs
under all service conditions with no distortion from
uneven hydraulic forces or pressure surges. These
automatic control valves are designed for operation in
vertical and horizontal installations and can be
configured to solve most irrigation control applications.
Features Benefits
Metal construction of the valve and pilots
230 PSI operating pressure
Remote control with a wide range of electric
solenoid or hydraulic controls.
Available in sizes 11⁄2" through 10"
Stable regulation at low flows and high
differential pressures
Metal Manual Electric Pressure Reducing Quick Pressure Relief Low Friction Loss Low Maintenance
405 Series
410 Series
420 Series
42055 Series
43Q Series
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Metal valves and compontents offer structural
strength where long term reliability is essential
Strength to withstand high pressure or water
hammer risk
Saves labor and optimizes water application
through accurate scheduling
Wide range of sizes and flows enables
matching valves to system requirements
Enables system to operate at peak irrigation
uniformity
Principles of Operation
10 50 100 500 1000 2000
Pressure Loss (psi)
Flow Rate (gpm)
10.O
1.0
0.2
0.3
0.4
0.6
2.0
3.0
4.0
7.0
0.1
2”-Y
3”-Y
3”L
4”
6”
20.0
0.1
0.2
0.3
0.4
0.6
0.8
1.0
2.0
3.0
4.0
6.0
8.0
10.0
Pressure Loss (psi)
10 20 30 40 60 80 100 200 400 600 1,000 2,000 4,000 6,000
Flow Rate (gpm)
1 ½” 10”
2” 4” 8”
3” 6”
On/off Control
Application: On/off manual,
electric or hydraulic command
for master valve and zone
control. In the diagram a
manual 3-way selector is
shown controlling the valve.
A solenoid or hydraulic relay
can be substituted to allow
electric or hydraulic operation.
Pressure Reduction 3-Way Control
Application: Reduction of upstream pressure to a lower constant downstream pressure.
Adjustable pressure reducing valves optimize the performance of pressure sensitive
emission devices by providing constant operating pressure.
Line pressure applied to the control chamber of the valve
creates a hydraulic force that moves the valve to the
closed position. Discharging pressure from the control
chamber to atmosphere allows the line pressure to push
the diaphragm up, thus opening the valve
Fully Open Position When upstream
pressure drops, the pilot blocks the
upstream pressure sensing port and
opens the drain port, venting the
control chamber to the atmosphere.
This fully opens the valve, minimizing
head loss.
Friction Loss Charts
Adjusting To Close When upstream
pressure rises, the pilot blocks the
drain port and opens the supply
pressure port. This pressurizes the
control chamber, forcing the valve
to modulate closed.
Metal ValvesPlastic Valves
Locked Position When sensed
pressure is equal to set point, the
pilot blocks both the drain and
the upstream pressure sensing
ports. This locks the pressure in
the control chamber, freezing the
diaphragm in its last position until
conditions change.
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