5
Watson McDaniel Company UTS600 Manual 2590000 RevA
Troubleshooting and Repair of Trap Test Valve
1.
If isolation valve is leaking when valve is closed, make sure the valve is fully closed. If valve is still leaking,
tighten bonnet nuts (4) to compress valve rings (9). If valve continues to leak, replace the valve rings and
bonnet assembly (2, 4).
2.
Before replacing isolation valve and components, the Trap Test Station must be separately isolated upstream
and downstream.
3.
Open the inlet and outlet isolation valves on the Trap Test Station. Open the blowdown valve to remove any
pressure in the piping.
4.
Loosen and remove bonnet nuts (4) and washers (5). Pull the bonnet assembly (2) off the valve body.
5.
Remove the valve rings (9) and lantern bushing (8). Inspect and clean and dirt and debris on valve body.
A.
Replacing valve rings
6.
Remove bonnet nuts (4) using ½” wrench. Loosen nuts evenly until fully removed. Remove washers (5).
7.
Remove valve rings (9) and lantern bushing (8).
8.
Clean metal seating surface on valve body and underside of bonnet of any dirt debris. Clean inside of valve
body where valve rings and lantern bushing sit.
9.
Insert 1 set of new valve rings into connector body (1).
10.
Insert new lantern bushing on top of valve rings.
11.
Insert 1 set of new valve rings on top of lantern bushing.
12.
Reinstall bonnet assembly onto connector body. Place washer (5) and nuts (4) and tighten evenly until bonnet
seats against the valve body.
13.
Close inlet valve before bring back into operation. Refer to start up section when bringing trap back into
operation.
