Lowflow Mark 708HP Series 8000 psi Control Valve Bedienungsanleitung PDF herunterladen

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

[email protected] • www.lowowvalve.com

I & M Mark 708HP / 708HPA

Installation & Maintenance Instructions for

Mark 708HP/708HPA 35M Actuator

Warning: Jordan LowFlow Control Valves must only be used, installed and repaired in accordance with these Instal-

lation & Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event

of leakage or other malfunction, call a qualied service person; continued operation may cause system failure or a

general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized uid. Before disassembling

a valve, be sure to release all spring tension.

Please read these instructions carefully!

Your Jordan LowFlow Valve product will provide you with

long, trouble-free service if it is correctly installed and

maintained. Spending a few minutes now reading these

instructions can save hours of trouble and downtime

later. When making repairs, use only genuine Jordan

Valve parts, available for immediate shipment from the

factory.

Ideal Installation

To control very low ow rates, Mark 708HP/HPA 1.

control valves are often provided with trims having

very small clearances. To keep this trim function-

ing properly, it is essential that the uid owing

through the valve be clean.

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

and other foreign matter, ALL pipelines and piping

components should be blown out and thoroughly

cleaned before the installation process begins.

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

ing should be installed as indicated in the Ideal In-

stallation Schematic to provide easier adjustment,

operation and testing.

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

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

foreign matter. A 0.033 perforated screen is usu-

ally suitable for this purpose. Line strainers are

available from Jordan Valve.

For best control, 3’ 0” straight sections of pipe 5.

should be installed on either side of the valve.

In preparing threaded pipe connections, care 6.

should be exercised to prevent pipe-sealing com-

pound from getting into pipelines. Pipe sealing

compound should be used sparingly, leaving the

two end threads clean. Jordan uses, and recom-

mends, thread sealer Teon ribbon.

The ow arrow on the valve body must be pointed 7.

in the direction of the ow. Ideally the valve should

be installed in the highest horizontal line of piping

to provide drainage for inlet and outlet piping, to

prevent water hammer, and to obtain faster re-

sponse.

If possible, install a relief valve downstream from 8.

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

the valve.

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

ing near the valve should be insulated to minimize

condensation.

Evaluate inlet and outlet pipe friction losses and 10.

velocities to decide when smaller outlet piping

might cause, excessive back pressure. When re-

quired, a standard tapered expander connected to

the outlet of the valve is recommended.

Where surges are severe, a piping accumulator is 11.

recommended.

Start-Up Procedure

Be sure that the action of the control valve and 1.

of the controller are such that you achieve the

desired results. The action can be changed if

needed using the instructions shown in “Reversing

Action”.

Increase in

temperature or

pressure must:

And the action of the

valve is:

Then the action

of the controller

must be:

Close Valve Air to Close (direct) Direct

Close Valve Air to Open (reverse) Reverse

Open Valve Air to Close (direct) Reverse

Open Valve Air to Open (reverse) Direct

1. Shut off Valve

2. Pipe Union

3. Strainer and Drain Valve

4. Pressure Gauge

5. Mark 708HP/HPA

6. Relief Valve

1 2 3 4 5

Inhaltsverzeichnis

Seite 1 - Ideal Installation

3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax [email protected] • www.lowowvalve.comI & M Mark 708HP

Seite 2 - Maintenance

Remove all of the packing and discard. Clean valve 2. stem and packing box thoroughly. The valve stem may be dressed with a very ne crocus cloth, but

Seite 3 - Actuator Maintenance

-3-Valve ReassemblyLubricate the seat (2) threads with a suitable lu-1. bricant such as NO-LOK and thread the seat into the body (1) (Note: Mk708HPA b

Seite 4 - Trouble Shooting

Reassembly of ActuatorAfter all parts have been thoroughly cleaned and in-spected, reassemble the actuator:Assemble actuator bolt (22), fastener seal

Seite 5 - Illustration and Parts List

Illustration and Parts List3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax [email protected] • www.lowowva

Verwandte Modelle: Mark 708HPA Series Control Valve

Kommentare zu diesen Handbüchern

Keine Kommentare

Lowflow Mark 708HP Series 8000 psi Control Valve Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Relais Lowflow Mark 708HP Series 8000 psi Control Valve herunter. LowFlow Mark 708HP Series 8000 psi Control Valve User Manual Benutzerhandbuch

Inhaltsverzeichnis

Verwandte Modelle: Mark 708HPA Series Control Valve

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Relais Lowflow Mark 708HP Series 8000 psi Control Valve