
DeZURIK
3---36" PEF 100% Port Eccentric Plug Valves
April 2015
Page 7
D10453
Installation
(Continued)
Liquids with Suspended Solids and Dirty Gases
If the pipeline carries suspended solids such as paper stock of 2 percent or higher consistency, mining
slurry, or raw sewage:
1. Before installation, remove foreign material such as weld spatter, oil, grease, and dirt from the
pipeline.
2. Prepare pipe ends and install valves in accordance with the pipe manufacture’s instructions for
the joint used.
Note:
See Figure 2 for proper valve orientation.
a.
In H
ORIZONTAL
pipelines, install the valve so that the plug is horizontal and rotates upward as
the valve opens.
b.
For V
ERTICAL
pipelines, install the valve with the end marked “S
EAT
” at top of valve.
Do not deflect the pipe-valve joint. Minimize bending stresses in the valve end
connection with pipe loading.
3. Ensure the valve and flanges are concentric to ensure proper flange sealing.
4.
Tighten the flange bolts or studs in a crisscross pattern.