Operation - Honeywell DIAL-SET DS05C Product Data

60
GASKET
TAILPIECE
NUT
GAUGE TAP PLUG
Fig. 4. DS05 exploded view.
DUST CAP
(BLACK)
LOCKING SCREW
ADJUSTING
KNOB
DIAL RING
BONNET
SPINDLE
SPRING
WASHER
CARTRIDGE
O-RING
SCREEN
O-RING
NUT
TAILPIECE
GASKET
BODY
M7314
7

OPERATION

The Honeywell DS05 Dial-Set Pressure Regulating Valve is a
balanced, direct acting pressure regulating valve. The DS05
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. A
factory-calibrated dial is built into the adjustment mechanism to
allow outlet pressure (no flow) to be set without a gauge. A
locking screw maintains the setting. A black plastic cover is
provided to conceal the setting and protect the Dial-Set from
moisture and debris.
Once the outlet pressure is set, the DS05 automatically
regulates to maintain the downstream pressure. See Figure 5
for the internal construction of the DS05.
Minimum ambient rating is 33° F (1° C).
INLET
Fig. 5. Internal construction of DS05.
DS05C,D,G
60
OUTLET
M7327
62-3041—4