Watts 6115-JM - Manual (Page 2)

TB6115-JM Rev. A Page 2 of 2
Model 6115-JM Installation
Prior to installation, flush line to remove debris.
1. Install valve horizontally “in line” (cover facing up), so flow arrow matches flow through the line. Consult
factory prior to ordering if installation is other than described.
2. Install inlet and outlet isolation valves.
Note: When using butterfly valves, ensure disc does not contact control valve. Damage or improper valve
seating can occur.
3. Provide adequate clearance for valve servicing and maintenance.
4. Install pressure gauges to monitor valve inlet and outlet pressure.
Note: If installation is subjected to very low flow or potentially static conditions, it is recommended that a
pressure relief valve (1/2" minimum) be installed downstream of the Pressure Reducing Valve for additional
system protection.
See Watts Model PV20-CB.
Start-Up Instructions
Note: Set-up the Model 6115-JM in a flowing condition for proper start-up. Automatic Control Valve start-up requires
bringing the valve into service in a controlled manner. All adjustments to control pilot and speed controls
should be made slowly, allowing the valve to respond and the system to stabilize.
1. Close upstream and downstream isolation valves.
2. Turn the Pilot (item 2) adjustment screw counterclockwise, releasing the spring tension. Open all isolation
Ball Valves.
3. Turn Adjustable Opening Speed Control (item 4) clockwise until seated, and then counterclockwise 2-1/2
turns. This is an approximate setting and should be fine tuned to suit system requirements once pressure
adjustments have been made.
4. Slowly open the upstream isolation valve. Loosen air bleed petcock on Position Indicator (item 5) allowing air
to vent. Close the air bleed petcock when all air is vented.
5. Slowly open the downstream isolation valve. Gradually turn the Reducing Pilot adjustment screw clockwise
to raise the downstream pressure.
There must be a demand for flow for proper start-up .
6. Allow valve and system to stabilize. Observe inlet and outlet pressure gauges. Continue to adjust Reducing
Pilot as needed, pausing approximately every 1-1/2 turns to allow the valve and system to stabilize. Turning
Reducing Pilot adjustment screw clockwise raises the outlet pressure. Turning the Reducing Pilot
adjustment screw counterclockwise lowers the outlet pressure. When the desired downstream pressure is
reached, tighten the locknut on Reducing Pilot.
7. Fine tune Opening Speed Control to suit system requirements. Adjust Opening Speed Control clockwise for
slower opening, and counterclockwise for faster opening.