D06G PRESSURE REGULATING VALVE
62-3051
6
OPERATION
The Honeywell Braukmann D06G Valve is a balanced, direct
acting pressure-regulating valve. It provides constant
downstream pressure regardless of varying inlet pressures
and downstream flow demands.
The spring force holds the valve in the open position until
downstream pressure, sensed by a port, is sufficient to press
on the underside of the diaphragm and close the valve. As
downstream pressure drops due to demand, the force on the
diaphragm is reduced and the valve opens. Adjustment is
made by manually turning the adjustment knob clockwise to
increase the spring force and require a higher downstream
pressure to close the valve. Similarly, reducing the spring
force lowers the outlet set pressure.
When the outlet pressure is set, the D06G automatically
regulates to maintain the downstream pressure.
TROUBLESHOOTING
Table 2 is a troubleshooting guide for the D06G Pressure Regulating Valves.
Table 2. Troubleshooting D06G Pressure Regulating Valves.
Problem
Probable Cause
Solution
Will not hold pressure or pressure
gradually rises.
a)
Thermal expansion.
b)
Debris on valve seat.
c)
Damaged valve seat.
a)
Install a thermal expansion tank to
limit pressure rise.
b)
Clean valve.
c)
Replace cartridge.
Frozen.
a)
Valve exposed to freezing
temperatures below 32°F (0 °C).
a)
Inspect and replace any damaged
components. Move valve to a location
that remains above freezing.
Pressure gauge measures a lower
pressure under flow conditions than
set pressure at no flow.
a)
This is normal and characteristic of
direct-acting pressure-reducing valves.
a)
No action.
Low capacity, low outlet pressure.
a)
Screen blocked with debris.
b)
Valve undersized.
a)
Clean screen.
b)
Check capacity versus requirements
and increase valve size.