Dixon Bayco 200-PV-9 Manual

Installation & Operating
Instructions
For
Dixon Bayco
200-PV-9 Pressure / Vacuum
Relief Cap for Mobile Fuel Tanks
dixonvalve.com
Canada:
Dixon Group Canada Limited
Innisfil (Barrie), Ontario
Phone: [phone]
Fax: [phone]
Toll Free: 877-963-4966
E-mail: [e-mail]
USA:
Dixon Bayco USA
Chestertown, Maryland
Phone: [phone]
Fax: [phone]
Toll Free: 800-355-1991
E-mail: [e-mail]
Mexico:
Dixva, S. de R.L. de C.V.
Monterrey, N.L
Phone: [phone]-DIXON (34966)
Fax: [phone]
E-mail: [e-mail]
Europe:
Dixon Group Europe Ltd
Preston, England
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Asia Pacific:
Dixon (Asia Pacific) Pty Ltd Wingfield,
South Australia
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
For Sales and Service Contact

200-PV-9 Pressure / Vacuum Relief Cap for Mobile Fuel Tanks
2 877.582.3569 200-PV-9

200-PV-9 Pressure / Vacuum Relief Cap for Mobile Fuel Tanks
200-PV-9 877.582.3569 3
To properly operate and maintain your Dixon Bayco pressure /
vacuum relief cap the following instructions are provided. Please read
with care as improper handling or maintenance may cause a
hazardous condition.
Installation
Dixon Bayco pressure / vacuum relief caps feature a 2”male NPT
pipe thread. Ensure both cap and tank threads are clean and
undamaged before attaching cap to tank.
Product Use
The 200-PV-9 is intended for mobile tanks. Due to the internal
pressure build caused by the sloshing of fuel and heat expansion,
vents for mobile tanks do have a higher opening pressure than vents
used on stationary tanks. The pressure vent in the 200-PV-9 cap
opens at between 7.5 & 9 Psi, which means that there could be up to
this pressure in the tank at any given time. With pressure in the tank,
when you remove the vent cap the tank will equalize to atmosphere,
this is considered normal.
Warning to Prevent Possible Injury
Remove the vent cap slowly, this will allow any residual
tank pressure to vent to the atmosphere. If someone were to
quickly spin the cap off, depending upon the volume of trapped
vapor in the tank, the cap could potentially lift off the tank when
it is completely un-threaded.
The 200-PV-9 also has a built in vacuum relief valve which is
designed to open at 1" Hg, this allows air to enter the tank when the
pump is operating. As the vacuum vent does not open until 0.33" HG,
up to 0.33" HG of Vacuum can be held in the tank, so when you
remove the vent cap you will hear the tank equalize to atmosphere,
this is considered normal.
Do not modify your Dixon Bayco pressure / vacuum relief
cap for any reason. Modification can result in a hazardous
condition due to operating difficulties or operation malfunction.
Disassembly or tampering will void the product warranty.

200-PV-9 Pressure / Vacuum Relief Cap for Mobile Fuel Tanks
4 877.582.3569 200-PV-9
ENSURE THAT THE CAP IS KEPT FREE OF DEBRIS, RAGS,
DIRT, SNOW AND ICE. FOR CORRECT OPERATION THIS CAP
REQUIRES A CLEAR AIR FLOW PATH FROM THE TANK TO
ATMOSPHERE. BLOCKAGE OF THIS FLOW PATH WILL
PREVENT THE CAP FROM VENTING AND MAY RESULT IN THE
TANK BURSTING OR COLLAPSING.
Immediately remove from service any pressure / vacuum
relief cap that is not performing satisfactorily.
Maintenance and Inspection
Dixon Bayco pressure / vacuum relief caps are tested at the factory
and are in proper working condition when shipped. Pressure /
vacuum relief caps are designed to be tough and to provide long
service with reasonable care and handling Dixon Bayco pressure /
vacuum relief caps should be routinely inspected to ensure correct
operation and particularly to ensure that the relieving components are
free to move and that the airflow path is unblocked.
Disassembly
Prior to disassembly it is recommended that the cap assembly be
removed from the tank to a clean area.
ENSURE THAT THE CAP (3) IS SECURED, BY CLAMPING
OR SIMILAR, TO THE VALVE BODY (1) BEFORE ATTEMPTING
TO REMOVE THE THREE SCREWS (5). FAILURE TO DO SO MAY
RESULT IN SERIOUS INJURY.
1. With the cap (3) firmly secured, unscrew the three countersunk
screws (5) and carefully release the clamp, or other arrangement,
securing the cap (3) to the valve body (1). Remove the cap (3),
spring (6) and screws (5) to a clean safe place.
2. Remove the valve plate (2) by inverting the valve body (1) and
lightly tapping.
Do not attempt to remove the check valve (7) from the valve
plate (2). The check valve is permanently bonded to the valve
plate to ensure a leak tight seal.
Inspect the valve plate (2), valve body (1) and O-ring (4) for damage
or contamination. If necessary the O-ring and sealing surfaces may
be cleaned using warm water to remove any build up.

200-PV-9 Pressure / Vacuum Relief Cap for Mobile Fuel Tanks
200-PV-9 877.582.3569 5
Assembly should follow the reverse procedure for disassembly,
ensuring that the valve plate (2) slides freely in the bore of the valve
body (1). If the valve plate does slide freely check for wear between
the mating components and / or lightly grease.
Dixon Bayco Warranty
For complete warranty information, please refer to the latest
Dixon catalog.