Protective clothing and equipment must be worn. A heavy-duty rubber apron,
rubber gloves, respirator, safety splash goggles and/or face shield are
required when potential exists for contact with wastewater or contaminated
surfaces. Wastewater and surfaces may be contaminated with pathogenic
microorganisms, bacteria or viruses, which present a risk of serious illness or
death to personnel. Refer to cleaning and sanitizing procedures in WP 0018
When handling wastewater components, wear gloves, apron, eye protection
and respirator to prevent serious illness due to contamination. Minimize the
effect of spills by draining any remaining fluids and rinse water into a
designated disposal point. Wear a protective suit when steam cleaning the
tank or associated components.
Relieve tank pressure before opening drain valve to prevent serious injuries.
Ensure isolation valve is in the open position and the pressure gage reads ∅
The drain valve assembly is heavy. To prevent injuries, two people are
required to remove it.
Prior to installing a new drain valve, obtain two new 4-inch gaskets for use during the
installation. These are mandatory replacement parts.
1. Close drain valve by placing hydraulic pump selector lever (figure 2, item 1) parallel with
pump handle (figure 2, item 2).
2. Close the hydraulic line control knobs (figure 2, item 3).
3. Disconnect the intake valve hydraulic line (figure 2, item 4) from the fitting (figure 2, item 5) on the