Lowflow 8000 Series Control Valve Bedienungsanleitung PDF herunterladen

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

lowﬂ[email protected] • www.lowﬂowvalve.com

I & M 8000 Series

Installation & Maintenance Instructions for

8000 Series Low Flow Control Valves

Warning: Low Flow Regulators must only be used, installed and repaired in accordance with these Installation & Main-

tenance Instructions. Observe all applicable public and company codes and regulations. In the event of leakage or

other malfunction, call a qualiﬁed service person; continued operation may cause system failure or a general hazard.

Before servicing any valve, disconnect, shut off, or bypass all pressurized ﬂuid. Before disassembling a valve, be sure

to release all spring tension.

Please read these instructions carefully!

Your LowFlow/Jordan product will provide you with long,

trouble-free service if it is correctly installed and main-

tained. Spending a few minutes now reading these in-

structions can save hours of trouble and downtime later.

When making repairs, use only genuine LowFlow Valve

parts, available for immediate shipment from the factory.

Ideal Installation Schematic

Main Line

Bypass Line

1. Shut-off valve

2. Pipe union

3. Strainer/drainer valve

4. Pressure gauge

5. Jordan Series 708 DCV

6. Relief valve

Steam

Trap

Condensate Return

Preferred Installation

1. To control very low ﬂow rates, Mark 8000 control

valves are often provided with trims having very

small clearances. To keep this trim functioning prop-

erly, it is essential that the ﬂuid ﬂowing through the

valve be clean.

2. To protect the valve from grit, scale, thread chips

and other foreign matter, ALL pipelines and piping

components should be blown out and thoroughly

cleaned before the installation process begins.

3. Shutoff valves, pressure gauges, and by-pass pip-

ing should be installed as indicated in the Ideal In-

stallation Schematic to provide easier adjustment,

operation and testing.

4. A line strainer should be installed on the inlet side

of the valve to protect it from grit, scale, and other

foreign matter. A 0.033 perforated screen is usually

suitable for this purpose. Line strainers are available

from Jordan Valve.

5. For best control, 3'-0" straight sections of pipe should

be installed on either side of the valve.

6. In preparing threaded pipe connections, care

should be exercised to prevent pipe-sealing com-

pound from getting into pipelines. Pipe sealing com-

pound should be used sparingly, leaving the two

end threads clean. Jordan Valve uses, and recom-

mends, thread sealer Teﬂon ribbon.

7. The ﬂow arrow on the valve body must be pointed

in the direction of the ﬂow. Ideally the valve should

be installed in the highest horizontal line of piping to

provide drainage for inlet and outlet piping, to pre-

vent water hammer, and to obtain faster response.

8. If possible, install a relief valve downstream from the

valve. Set at 15 psi above the control point of the

valve.

9. In hot vapor lines, upstream and downstream pip-

ing near the valve should be insulated to minimize

condensation.

10. Evaluate inlet and outlet pipe friction losses and ve-

locities to decide when smaller outlet piping might

cause excessive back pressure. When required, a

standard tapered expander connected to the outlet

of the valve is recommended.

11. When surges are severe, a pipe accumulator is rec-

ommended.

12. On steam control applications, install a steam trap

with sufﬁcient capacity to drain the coil or condens-

er. Be sure to have a good fall to the trap, and no

backpressure. Best control is maintained if the coil

or condenser is kept dry.

Trouble Shooting

If You Experience Erratic Control:

• Oversizing can cause cycling or hunting, recalcu-

late the size required

• Undersizing can cause the control point to drop off

under peak loads, increase the trim size

• Inlet pressure to the valve may be varying signiﬁ-

cantly and the controller may not be following it, ad-

just controller

• Control loop may require an equal percentage trim if

higher rangeabilities are being utilized

• Controller may not be properly adjusted

• Steam traps may need reconditioning

1 2 3 4 5 6

Inhaltsverzeichnis

Seite 1 - I & M 8000 Series

3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax 513-871-0105lowﬂ[email protected] • www.lowﬂowvalve.comI & M 8000 Ser

Seite 2 - Maintenance

• Safety relief valves may be leaking• Valve stroke may be out of adjustment or there may be foreign matter in the valve preventing full plug moveme

Seite 3

-3-each ring down ﬁrmly into place with a tube.4. After the packing is installed, assemble the packing adapter (7), and packing nut (11). Tighten the

Seite 4 - Reversing Action

(32).Reverse Acting Actuator: ATO (Air to Open)1. Remove actuator from body (refer to Section 2). Re-move the actuator case bolts (20) and nuts (45)

Seite 5 - Direct Acting (ATC)

The action of the Series 8000 control valve is changed by reversing the action of the actuator.1. Disassemble the actuator. Refer to Section 5.2. Re

Seite 6 - Reverse Acting (ATO)

Reverse Acting (ATO)3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax 513-871-0105lowﬂ[email protected] • www.lowﬂowvalve.c

Verwandte Modelle: 8000BS Series Bellows Stem Seals | 8000T Series Three Way Body |

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Lowflow 8000 Series Control Valve Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Relais Lowflow 8000 Series Control Valve herunter. LowFlow 8000 Series Control Valve User Manual Benutzerhandbuch

Inhaltsverzeichnis

Verwandte Modelle: 8000BS Series Bellows Stem Seals | 8000T Series Three Way Body |

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