Specifications

Installation 00-02-0175 page 5 of 6
Basic Operation
As condensate rises in the scrubber, the float on
the L1200NDVOR rises and trips its pneumatic
valve. The valve opens allowing pressure to enter
the dump valve pilot chamber. Once the pressure
enters the pilot chamber it forces the diaphragm
and valve stem forward thus opening the valve seat
(valve open/closed indicator button pops out) and
releasing condensate through the valve stem and
out the drain. As the condensate level drops, the
L1200NDVOR pneumatic valve closes to shut off
the pressure to the dump valve causing it to close.
If for any reason the condensate continues to rise
beyond normal dump levels, model L1200
operates the alarm and/or shuts down
the equipment.
The L1200NDVOR Filter/Regulator and the
MURPHYGAGE
®
help keep the control pressure
clean and dry. They also allow the operator to
adjust pressure to recommended levels.
TYPICAL INSTALLATION ON GAS COMPRESSORS
Rising
Level
Trips
DVO
VESSEL
Rising Level Shutdown
L1200 (with snap-switch)
Filter/Regulator
with MURPHYGAGE
®
Minimum control pressure
30 psi (207 kPa) [2.07 bar]
L1200NDVOR
Dump Valve
Operator
DVU Series Dump Valve
Air Supply Maximum
300 psi (2.07 MPa)
[20.70 bar]
Condensate Line (Out)
Union
Union
Electrical
Conduit
Explosion proof
conduit seal required
for Class I. Div 1, not
required for intrinsically
safe or non-incendive
circuits like FWM TTD.
Minimum control
pressure 30 psi
(207 kPa) [2.07 bar]
Manual Drain Valve
Typical/Scrubber/Separators
ELECTRICAL INFORMATION
REPLACEMENT PARTS
Black N.O.
Red N.C.
White COM.
Green Grd. Connection
Black N.O.
Red N.C.
White COM.
Green Grd. Connection
Blue N.C.
Orange N.C.
Yellow COM.
SPDT (Snap Switch)
DPDT (Snap Switch)
Switch Rating: 10 A @ 125-250 VAC
1/2 A @ 125 VDC
1/4 A @ 250 VDC
10 A @ 6-24 VDC
Inductive/Resistive
Switch Rating: 5 A @ 125-250- 480 VAC
1/2 A @ 125 VDC
1/4 A @ 250 VDC
2A @ 6-30 VDC Resistive
1A @ 6-30 VDC Inductive
Order by part number designation.
L1100/L1200*
15000893: BUOYGLAS™ float
15000894: Stainless Steel float for L1200
15000937: Stainless Steel float for L1100
15000124: SPDT snap switch assembly
15010213: L1100 counter balance assembly
15010214: L1200 counter balance assembly
L1200N
15050420: Cam spring return
15050421: Cam
15000893: BUOYGLAS™ float
15000894: Stainless Steel float for L1200N
15050453: Valve stem
15010189: Counter balance assembly
L1200NDVO and L1200NDVOR
55050621: Regulator only
05706499: 20BPG-D-75 Pressure MURPHYGAGE
®
0-75 psi (517 kPa) [5.17 bar]
15010216: DVOA assembly (New rectangular style)
15000940: DVO assembly (Old round style)
*To maintain hazardous location listings, all other repairs must be made by the factory.
DISCONTINUED