Dwyer DV User Manual

Series DV Timed Automatic Drain Valve

®

5

[

127.00]

1

/2˝, 3/4˝ OR 1˝ NPT

B

OTH ENDS

4

-3/4

[

119.89]

Specifications - Installation and Operating Instructions

Bulletin V-18

Series DV is an automatic drain system designed to eliminate the need

to manually drain water and harmful sediments from your compressed air
system, thereby improving the systems performance. The unit can be
used on receivers, dryers, tanks, and drop legs for sampling and purging
a wide variety of liquids. The Series DV has a heavy-duty motor for
operation under adverse conditions and an adjustable timer to meet
specific user requirements. By design, the Series DV eliminates major
drawbacks of other compressed air draining systems. The valve is brass
for corrosion resistance and it is a full port ball valve giving maximum and
unobstructed flow with no clogging. A test button allows for the unit to be
cycled at any time. It is mountable in any position for easy plumbing, and
trouble free operation.

Do not apply electrical power to the unit unless the unit is fully assembled
and mounted. Failure to do so could result in personal injury and/or
damage to the unit. Disconnect power source and depressurize the
system before working on the unit. Failure to do so could result in
personal injury. The downstream or discharge side of the ball valve must
be directed to a safe area for collecting water, oil and debris. The
compressed air system is pressurized during operation. Appropriate
precautions are recommended.

CAUTION: It is recommended that eye protection be worn while
servicing the system. Failure to do so could result in personal injury.

WARNING: The motorized drive unit case is not capable of supporting
any loads. Do not attempt to use the unit as a step. This will cause
damage to the unit and could cause personal injury. Do not use in
hazardous locations.

SPECIFICATIONS
Body: 2 – piece.
Line Size: 1/4 to 1˝.
End Connections: Female NPT.
Pressure Limit: 200 psi (13.8 bar).
Wetted Materials:

Body, End Cap: Forged Brass;
Ball, Stem: Chrome Plated Brass;
Seat: RTFE;
Stem Seal: Fluoroelastomer;
Bushings: Brass.

Temperature Limits: 35 to 165°F (2 to 74°C).
Other Materials: Thrust washer: RTFE

Fasteners: Stainless Steel.

Discharge Time: 3.5 seconds non-adjustable.
Discharge Volume Cycle: 1/2˝: 0.92 gal @ 80 psi (valve only);

3/4˝: 1.64 gal @ 80 psi;
1˝: 2.50 gal @ 80 psi.

ACTUATOR
Electric
Power Requirements: 110 VAC, 60 Hz, single phase.
Power Consumption: 2.5 A.
Cycle Time Adjustable: 5 min, 10 min, 15 min, 30 min, 1 hr, 2 hr, 4 hr,

8 hr, 16 hr, 24 hr.

Enclosure Rating: NEMA 4.
Housing Material: Polycarbonate.
Electrical Connection: 18 AWGX3C, 8 ft (24 m) power cord.

CAUTION: Do not use the case as leverage when mounting this unit or

tightening fittings. Use the wrenching flats on the valve body.

W.E. ANDERSON DIV., Phone: [phone] www.dwyer-inst.com
DWYER INSTRUMENTS, INC. Fax: [phone] e-mail: [e-mail]

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U.S. A.

INSTALLATION

Figures 1 & 2 show typical installations of the drain valve. It is
recommended that the motorized drive be removed from the valve
before piping the valve into your system. Then reinstall the motorized
drive unit to the valve. This can be done using the four screws holding
the valve to the case.

Install the automatic drain valve to the compressed air system at a point
where moisture would tend to collect. Pipe the opposite end of the valve
to your discharge area.

Note: This unit may be mounted in any position with the flow in either
direction. For air receiver applications, (fig. 1) it is recommended copper
tubing be used for all connection of the pressure side of the valve. For
drop leg applications, (fig. 2) install ridged tubing or pipe from the valve
to the lowest practical point of your system.

Fig. 1

Fig. 2

WARNING: Always disconnect power source before working on this unit.

Failure to do so could result in personal injury. The valve is under
pressure. Discharge of compressed gas or fluids will occur during any
cycling of the ball valve when unit is installed in the piping system. Eye
protection is recommended.

OPERATION

Plug the cord set into a proper power source. Set the dial at the desired
frequency of operation. The valve will cycle and the timing sequence will
begin. To change the timing sequence, simply change the code setting
and the timer will reset. The test button may be used to cycle the unit at
any time.

MAINTENANCE

Periodic maintenance is recommended to ensure long, dependable
service from your drain valve. Check power cord for breaks in the outer
jacket or damage to the plug. The case should be kept clean so that label
instructions are legible. The ball valve should be checked for leakage at
the downstream side. The Series DV is not field serviceable and should
be returned if repair is needed (field repair should not be attempted and
may void warranty). Be sure to include a brief description of the problem
plus any relevant application notes. Contact customer service to receive
a return goods authorization number before shipping.

TROUBLESHOOTING CHART

SYMPTOM

Valve does not cycle

Ball valve leaks at
discharge side

Unit cycles but does
not discharge water
and/or air

Valve discharges
mostly air each cycle
Valve discharges all
liquid each cycle

POSSIBLE CAUSE

Proper power is not
reaching unit

Timer set improperly

Excessive seat
damage from debris

No pressure
upstream
Valve or line clogged
with debris

Timer set improperly

Timer set improperly

CORRECTIVE ACTION

Check that power cord is
plugged into the proper
power source. Check
power source. Push test
button. Reset timer.
Push test button to flush
valve. Replace ball
valve.
Check that Pneumatic
system is pressurized.
Disconnect power.
Depressurize pneumatic
system. Remove drain
valve and check for
blockage in the valve
and the line.
Reset timer to longer
intervals
Reset timer to shorter
intervals

©Copyright 2014 Dwyer Instruments, Inc. Printed in U.S.A. 5/14 FR# RV-443450-00 Rev. 2

W.E. ANDERSON DIV., Phone: [phone] www.dwyer-inst.com
DWYER INSTRUMENTS, INC. Fax: [phone] e-mail: [e-mail]

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U.S. A.