Planning the Installation
1. Locate the pressure regulator in a straight run of
horizontal pipe. See Figure 4.
2. Allow access room above and below the valve for
inspection and maintenance.
3.
For steam service, in order to prevent
water hammer and erratic operation, install
properly sized traps to provide proper
drainage of condensate before and after the
pressure regulator.
4. Avoid the damaging effects of scale and dirt in
pipe lines by installing a Y-Type Strainer as shown
in Figure 4.
5. Provide a 3-valve by-pass to facilitate inspection
and maintenance without interrupting service.
6. If the pressure rating of the downstream piping
or connected equipment is less than the initial
pressure, install a safety valve as shown in
Figure 4.
7. Install initial and delivery pressure gauges to
indicate performance. When long runs of piping
Installing the Valve
1.
Flush the piping system thoroughly to clear it of
any debris.
2. Mount the valve between unions with the arrows
under the diaphragm flange pointing in the
direction of the flow.
Figure 3.
Aspirator Location Mark
NORMAL POSITION
ASPIRATOR LOCATION MARK
ADJUSTED POSITION
are involved, the delivery pressure gauge should
be located as close to the process or equipment
controlled as is practical.
8. To eliminate excessive noise and enhance stability
with steam and other compressible fluids:
a.
Avoid single pressure reduction in excess of
5 to 1 ratio.
b. Enlarge the delivery pipe size to effect a
reasonable flow velocity at the reduced
pressure. A concentric tapered transition
is recommended.
c. Avoid sharp turns close to the regulator outlet
as well as bull-headed tee connections to low
pressure mains.
4
Type D50
