Flow Control Valves Series FC

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Flow Control ValvesSeries FC
Product Education Course
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Purpose of a Flow Control Valve
Imagine having an employee who would throttle a
valve to maintain a constant rate of flow,
regardless of changing pressure.
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But a Flow Control Valve Won't Get Tired
and it doesnt take a lunch break.
It works automatically and is
completely tamper-proof!
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Uses for a Series FCFlow Control Valve

• To maintain a constant rate of flow in a range of
  ¼ GPM to 120 GPM (.95 LPM to 454 LPM) with 10
  accuracy.
• Replace costly, exotic flow control valves.
• Eliminate guesswork and labor-intensive manual
  flow controls such as throttling ball valves.
• Prevent tampering of flow rate.

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How it Works
Inlet side
Outlet side Ribs
A unique rubber diaphragm in the valve allows
liquid to flow between a series of ribs
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The cone-shaped outlet side of the diaphragm is
set against a unique, precision machined orifice
plate. As pressure increases, the diaphragm is
pressed deeper into the orifice plate, preventing
an increase in flow.
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By using different sized diaphragms and custom
cut orifice plates, a flow control valve can be
built to the exact GPM required.
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For larger pipe sizes and higher flow rates,
multiple diaphragms and orifice plates are used.
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Lets See this Valve in Action
Heres the FC after being installed in a piping
system. No liquid is present, and the diaphragm
is under no pressure.
INLET
OUTLET
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Turn the pump on, and liquid is flowing through
the system in the desired direction. Since flow
has just started, it is below the flow rate of
the valve, and the diaphragm is not yet
pressurized.
INLET
OUTLET
It is important to understand that the FC cannot
increase a low flow rate. Its not a pump!
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As pressure increases, the diaphragm and orifice
combination assure that flow does not exceed the
specified flow rate.
INLET
OUTLET
Keep in mind that the flow rate is specified when
the valve is ordered.
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Increased pressure and flow force the diaphragm
further into the orifice, which restricts flow
and assures that it stays at the desired rate
downstream.
INLET
OUTLET
A minimum 15 PSI pressure drop across the valve
is required for flow to remain at the pre-set
rate.
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Now the pressure is extremely high, and the
diaphragm is pressed hard against the orifice,
yet the flow rate downstream has very little
variation.
INLET
OUTLET
Flow rate will vary 10 with buna diaphragms,
15 with EPDM diaphragms.
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Because of the way the diaphragm works, it is
important that the valve be installed in the
proper direction.
Installing the Series FC Valve...
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Installation, continued

• As long as youve got the FC pointed in the
  proper flow direction, it can be oriented in any
  position in the piping systemup, down, sideways,
  even on an angle!

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Once a 15 PSI (1bar) differential is established,
the valve works automatically as pressure rises
and falls. Its completely maintenance-freeinsta
ll it, and forget it!
Downstream flow rate remains constant!
While inlet pressure changes
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But waittheres more!
Plast-O-Matic Series Flow Control Valves
offer Purity Corrosion Resistance No metal
parts to corrode or release impurities. Convenien
ce Threaded connections standard also
available with sockets, spigots, flare, flange,
and custom connections. Great Selection Series
FC is offered in a variety of corrosion-resistant
thermoplastics Geon PVC, Kynar PVDF, Natural
Polypropylene, and PTFE. Key Sizes ¼ through
3 pipe sizes.
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And to review the key points

• Install it Forget it Tamper-proof valve
  maintains a constant, predetermined flow rate.
• Automatic Operation A diaphragm changes shape
  with inlet pressure changes, thus maintaining a
  constant flow rate.
• Economical Replace costly flow control valves,
  or unreliable manual throttling valves.
• Specify the Flow Rate From ¼ to 120 GPM
• Minimum Pressure Drop 15 PSI to achieve desired
  flow.

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Series FC Flow Control Valves
an economical alternative to costly, exotic flow
controls!