Jordan Valve Mark 508 Series – Tank Blanketing Valve - Manual

Please read these instructions carefully!
Your Jordan 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 genu-
ine Jordan Valve parts, available for immediate shipment from
the factory.
Ideal Installation Schematic
Preferred Installation
1. To protect the regulator from grit, scale, thread chips and
other foreign matter, ALL pipelines and piping components
should be blown out and thoroughly cleaned before the in-
stallation process begins.
2. Shutoff valves, pressure gauges and by-pass piping should
be installed as indicated in the Ideal Installation Schematic
to provide easier adjustment, operation, and testing.
3. In preparing threaded pipe connections, care should be ex-
ercised to prevent pipe sealing compound from getting into
the pipe lines. Pipe sealing compound should be used spar-
ingly, leaving the two end threads clean. Jordan recommends
Teflon tape.
3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
E-Mail: [email protected] • www.jordanvalve.com
I & M 508/608
3/4"-1-1/4"
Installation & Maintenance Instructions for
Mark 508/608 Gas Pressure Regulators
Warning: Jordan Valve Pressure Regulators must only be used, installed, and repaired in accordance with these Installa-
tion & 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.
4. A line strainer should be installed on the inlet side of the
regulator to protect pipe from grit, scale and other foreign
matter. A .033 perforated screen is usually suitable for this
purpose. Line strainers are available from Jordan Valve.
5. The flow arrow on the regulator body must be pointed in the
direction of flow. The regulator may be installed in any posi-
tion. The actuator may be rotated to any position relative to
the body. (See sizing.) Loosen the union nut and position the
actuator. Pull the union nut up hand-tight, then tighten
1/4 turn. (The union nut is 8-sided and may be used as a
guide.)
6. Provisions are provided to vent the case from the top or bot-
tom by a 1/4” pipe tap opening. One opening is plugged, the
other has a screened (bug) vent. Reverse these if it is de-
sired open vents should point downward; a street elbow can
be used if needed. Some installations will require that this
vent be piped to some location external to the regulator. When
remote piping is used, 1/4” size is adequate. NEVER BLOCK
OFF THE VENT LINE. Follow local regulations.
7. Install a relief valve downstream from the regulator to protect
downstream components from over-pressurization. Gener-
ally, the setting of the relief valve should be at least 20%
greater than the regulator set point. It must have adequate
flow capacity to protect the downstream components should
the regulator fail to shut off.
8. Operate the regulator within its rated pressure and tempera-
ture. The standard MK 508/608 is rated at 150 psig max
(inlet or outlet section) at -20 to +200°F. Regulator ratings
and materials of construction are listed on the valve name
plate.
PROTECT VALVES WITH LINE STRAINERS
Vent Line
(if used)
4
6
R
1
2 2 5
4
1
3
1
By-Pass Line
1 Shut-off Valves
2 Pipe Union
3 Strainer
4 Pressure Gauges
5 Jordan Regulator
6 Relief Valve
Start-Up
1. Fully open the outlet shut-off valve.
2. Slowly open the inlet shut-off valve.
3. Slowly open and close the outlet shut-off valve several times.
This fully strokes the valve to insure satisfactory operation.
4. With the outlet shut-off valve open and preferably at a low
flow, slowly turn the adjusting screw until the desired pres-
sure is shown on the pressure gauge.
5. To change the controlled pressure, turn the adjusting screw
clockwise to increase pressure, and counterclockwise to de-
crease pressure.
Figure 1