Ross Controls ELECTRONICALLY CONTROLLED User Manual
External Drains
Automatic External Drains
For use where severe condensate problems exist. These drains are used with FULL-SIZE or HIGH-CAPACITY filters, but can
also be used to drain water separators, drain legs, or compressor receiver tanks.
When liquid is present, it is drained regardless of air flow , and there is no loss of air. Discharge
rate is approximately 5 gallons per minute at 100 psig (6.9 bar). Dr ain can also be operated
manually.
Pipe Model Numbers Dimensions inches (mm)
Size Plastic Bowl** Metal Bowl A B C
C
B
1/8 5057B1001 5058B1001 3.5 (89) 4.2 (107) 8.4 (212)
1/4* 5057B2001 5058B2001 3.5 (89) 4.2 (107) 8.4 (212)
*Use 1/4 size with FULL-SIZE or HIGH-CAPACITY filters. Use kit 1076K77 to convert standard
bowl to accept auto drain unit.
**Plastic bowl includes metal bowl guard.
A
Electronically Controlled Drain
The electronic drain is designed to remove condensate from components in compressed air systems. Typical installations include
compressors, dryers, receivers, driplegs, and filters.
The drain consists of a timer and a valve. Electronic controls allow the draining interval to be set from 0.5 to 45 minutes, and
the drain time from 0.5 to 10 seconds. Once set, draining action is automatic and requires no maintenance. This is important in
constant-flow applications where there is no on-off action to trigger a standard automatic drain.
DIMENSIONS inches (mm)
Pipe Drain Only
Size* Voltage Model Number
1/4 NPTF 110-120 volts AC, 50/60 Hz R-DED-115V-2
3/8 NPTF 110-120 volts AC, 50/60 Hz R-DED-115V-3
1/2 NPTF 110-120 volts AC, 50/60 Hz R-DED-115V-4
1/4 NPTF 24 volts DC R-DED-24V-2
3/8 NPTF 24 volts DC R-DED-24V-3
1/2 NPTF 24 volts DC R-DED-24V-4
* For BSPP threads, add a “W” suffix to the model number,
e.g., R-DED-115V-2.
ST ANDARD SPECIFICA TIONS (for electronically controlled drain):
Drain Time: Adjustable 0.5 to 10 seconds.
Drain Interval: Adjustable 0.5 to 45 minutes.
Current Consumption: 4 ma maximum.
Ambient Temperature: 35° to 130°F (2° to 54°C).
Media Temperature: 35° to 190°F (2° to 88°C).
IMPORTANT NOTE: Please read carefully and thoroughly all of the CAUTIONS on the inside back cover.
1.75
(44.5)
3.66
(92.9)
Inlet
Port
Electrical Connection: DIN 43650A, ISO 440/6952.
Valve T ype: 2/2 direct acting, normally closed.
Valve Body: Forged brass; 3/16-inch (4.8 mm) orifice.
Maximum Pressure: 230 psig (15.8 bar).
Port Threads: NPT standard, BSPP.
3.53 (89.7)
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