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all Installations
The robust design of the Type EZR allows this regulator
to be installed indoors or outdoors. When installed
outdoors, the Type EZR does not require protective
housing. This regulator is designed to withstand the
elements. The powder paint coating protects against
minor impacts, abrasions and corrosion.
When installed indoors, no remote venting is required
except on the pilot spring case. This regulator can
also be installed in a pit that is subject to flooding
by venting the pilot spring case above the maximum
possible flood level so the pilot setting can be
referenced at atmospheric pressure.
1. O nly personnel qualified through training and
experience should install, operate and maintain a
regulator. Before installation, make sure that there is
no damage to or debris in the regulator. Also, make
sure that all tubing and piping are clean
and unobstructed.
The Type EZR optional inlet strainer is
intended to prevent occasional large
particles from entering the main valve.
If the gas contains continuous particles,
upstream filtration is recommended.
When using an inlet strainer (key 23), do
not use the shim (key 23) and vice versa.
2. Type EZR regulator may be installed in any
orientation, as long as flow through the regulator
matches the direction of the arrow on the main
valve body. However, for easier maintenance,
install the regulator with the bonnet up.
When installing a Type EZR trim package
in an existing E-body, make sure flow is
up through the center of the cage and
down through the cage slots. In some
cases, correct flow path is achieved
by removing the body from the line
and turning it around. If this is done,
change the flow arrow to indicate the
correct direction. Damage may result
if flow is not in the correct direction.
after assembly, check the regulator for
shutoff and leakage to atmosphere.
Types EZR/399 restricted trim bodies
(nPS 6 x 4, 8 x 4, 8 x 6 and 12 x 6 /
Dn 150 x 100, 200 x 100, 200 x 150 and
note
CaUTIOn
300 x 150) are different than EW valve
bodies and are not interchangeable.
Install trims only in correct restricted
trim bodies.
3. The standard pilot mounting position is as shown in
Figure 1. Other mounting positions are available.
4. Apply a good grade of pipe compound to the external
pipeline threads for a threaded body or use suitable
line gaskets for a flanged body. When installing butt
weld end connections, remove trim before welding
and make sure to use approved welding practices.
Use approved piping procedures when installing
the regulator.
CaUTIOn
a regulator may vent some gas to the
atmosphere. In hazardous or flammable
gas service, vented gas may accumulate
and cause personal injury, death or
property damage due to fire or explosion.
Vent a regulator in hazardous gas service
to a remote, safe location away from
air intakes or any hazardous location.
Protect the vent line or stack opening
against condensation or clogging.
5. A clogged pilot spring case vent may cause the
regulator to function improperly. To prevent plugging
(and to keep the spring case from collecting moisture,
corrosive chemicals or other foreign material) point
the vent down, orient it to the lowest possible point
on the spring case or otherwise protect it. Inspect the
vent regularly to make sure it has not been plugged.
To remotely vent a spring case, remove the vent and
install obstruction-free tubing or piping into the
1/4 NPT vent tapping. Provide protection on a remote
vent by installing a screened vent cap onto the remote
end of the vent pipe. The 161AY Series pilot has a
vent restriction (key 55, Figure 20) to enhance low
flow stability. Do not remove this restriction.
WaRnIng
!
To avoid freeze-up because of pressure
drop and moisture in the gas, use
antifreeze practices, such as heating the
supply gas or adding a de-icing agent to
the supply gas.
Type EZR
7
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