LowFlow Mark 6800HP Series High Pressure Regulating Valve - Manual

3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
[email protected] • www.lowflowvalve.com
I & M 6800HP Series
Installation & Maintenance Instructions for
Mark 6800HP High Pressure Regulators
Warning: Low Flow Regulators must only be used, installed and repaired in accordance with these Installation &
Maintenance Instructions. Observe all applicable public and company codes and regulations. In the event of leak-
age 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 maintained. Spending a few
minutes now reading these instructions 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
Preferred Installation
1. 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.
2. Shutoff valves, pressure gauges and by-pass piping
should be installed as indicated in the Ideal Instal-
lation Schematic
to provide easier adjustment,
operation and testing.
3. When preparing threaded pipe connections, care
should be exercised to prevent pipe sealing com-
pound from getting into the pipe lines. Pipe sealing
compound should be used sparingly, leaving the
two lead threads clean. Jordan Valve uses, and
recommends, thread sealer Teflon ribbon.
4. A line strainer should be installed on the inlet side
of the regulator to protect it from grit, scale, and
other foreign matter. A 0.033 perforated screen is
usually suitable. Line strainers are available from
Jordan Valve.
5. The flow arrow on the valve body must be pointed
in the direction of the flow. The regulator may be
installed vertically or horizontally without affecting
its operation.
6. For best control, 3'0" straight sections of pipe
should be installed on either side of the regulator.
7. In hot vapor lines, upstream and downstream
piping near the regulator should be insulated to
minimize condensation.
8. If possible, install a relief valve downstream from
the regulator. Set at 15 psi above the control point
of the regulator.
9. In gas service, expand the outlet piping at least
one pipe size, if the control pressure (downstream)
is 25% of the inlet pressure or less. A standard
tapered expander connected to the outlet of the
valve is recommended.
10. Where surges are severe, a piping accumulator is
recommended.
11. Operate the regulator within its rated pressure and
temperature.
Start-Up
With inlet, outlet, and by-pass shutoff valves closed,
and no pressure the downstream line:
1. Fully open the outlet shutoff valve.
2. Slowly open the inlet shutoff valve.
3. Slowly open and close the outlet shutoff valve
Main Line
4
Bypass Line
1. Shut-off valve
2. Pipe union
3. Strainer/drainer valve
4. Pressure gauge
5. Jordan regulator
6. Relief valve
1
2
5
2
1
4
6
R
1