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Series DCV/RDCV Diaphragm Valves
Specications - Installation and Operating Instructions
DCV62T1D RDCV62T
DCV20C1D RDCV20C
Bulletin V-14
The Series DCV/RDCV Diaphragm Valves are ideal for use with the Series DCT1000
and Series DCT500 duct collection timer boards. Both the Series DCV and RDCV
have the option for either coupling or NPT connections. The coupling connection
allows for a quick and simple installation. Only the stub pipe and blowtube need to
be cleaned and deburred before the valve is t into position. The “T” Series DCV has
female threaded connections. Both the “C” and “T” versions have a 90° angle between
the inlet and outlet the most suitable conguration for pulse valve applications. The
design offers not only ease of installation, but also minimal airow restriction for an
exceptional cleaning pulse. The valves are offered in both integrated and remote coil
congurations.
MODEL CHART
Model Size Solenoid Connection
RDCV20T
RDCV20C
DCV20T1D
DCV20C1D
RDCV25T
RDCV25C
DCV25T1D
DCV25C1D
RDCV35T
RDCV35C
DCV35T1D
DCV35C1D
RDCV45T
RDCV45C
DCV45T1D
DCV45C1D
RDCV50T
DCV50T1D
RDCV62T
DCV62T1D
RDCV76T
DCV76T1D
*110 VAC with DIN Connector.
3/4˝
3/4˝
3/4˝
3/4˝
1˝
1˝
1˝
1˝
1-1/2˝
1-1/2˝
1-1/2˝
1-1/2˝
1-1/2˝
1-1/2˝
1-1/2˝
1-1/2˝
2˝
2˝
2-1/2˝
2-1/2˝
3˝
3˝
Remote
Remote
Integral*
Integral*
Remote
Remote
Integral*
Integral*
Remote
Remote
Integral*
Integral*
Remote
Remote
Integral*
Integral*
Remote
Integral*
Remote
Integral*
Remote
Integral*
NPT
Coupling
NPT
Coupling
NPT
Coupling
NPT
Coupling
NPT
Coupling
NPT
Coupling
NPT
Coupling
NPT
Coupling
NPT
NPT
NPT
NPT
NPT
NPT
Number of
Diaphragms
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
Cv Factor
(gal/min)
14
14
14
14
23
23
23
23
42
42
42
42
51
51
51
51
106
106
136
136
167
167
SPECIFICATIONS
Service: Compatible gases, ltered and oil free.
Wetted Materials: Body: aluminum; Trim: 304 SS; Diaphragm and seals: NBR;
Diaphragm disc: Polyamide.
Other Materials: Cover: Aluminum; Body bolts and spring: 304 SS.
Pressure Limits: Minimum of 4.4 psi (0.3 bar), maximum of 124.7 psi (8.6 bar).
Temperature Limits: Ambient: -4 to 140°F (-20 to 60°C) for RDCV models, -4 to
122°F (-20 to 50°C) for DCV models; Operating: -4 to 185°F (-20 to 85°C).
Power Requirements: 110 VAC, 220 VAC, or 24 VDC for DCV models.
Power Consumption: 12 W, inrush: 17 VA; holding: 14.5 VA for DCV models.
Electrical Connection: DIN connection for DCV models.
Enclosure Rating: NEMA 4X (IP65) for DCV models.
Process Connection: See model chart.
Mounting Orientation: Any position.
MODEL CHART
Construction DCV
RDCV
Size 20
25
35
45
50
62
76
Connection T
C
Voltage 1
Electrical Connections D DIN (for integrated coil only)
Integrated coil
Remote coil
3/4˝
1˝
1-1/2˝
1-1/2˝ (2 diaphragms)
2˝
2-1/2˝
3˝
NPT
Coupling (up to 1-1/2˝ only)
110 VAC (for integrated coil only)
2
220 VAC (for integrated coil only)
3
24 VDC (for integrated coil only)
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000
Fax: 219-872-9057
www.dwyer-inst.com
e-mail: info@dwyermail.com
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DCV20T
DCV25T
B
DCV20C
DCV50T
C WIDTH
B
RDCV20C
A
C WIDTH
DCV35T
DCV25C
DCV35C
DCV45T
DCV45C
DCV62T
DCV76T
C WIDTH
E
D
A
DCV DIMENSIONAL CHART
Connection
NPT
NPT
NPT
NPT
NPT
NPT
NPT
Coupling
Coupling
Coupling
Coupling
RDCV20T
RDCV25T
RDCV35T
E
Model
DIN Electrical Connection Lead Wires Electrical Connection
DCV20T1D
DCV25T1D
DCV35T1D
DCV45T1D
DCV50T1D
DCV62T1D
DCV76T1D
DCV20C1D
DCV25C1D
DCV35C1D
DCV45C1D
C WIDTH
D
A
B
E
DCV20T2D
DCV25T2D
DCV35T2D
DCV45T2D
DCV50T2D
DCV62T2D
DCV76T2D
DCV20C2D
DCV25C2D
DCV35C2D
DCV45C2D
B
E
D
DCV20T3D
DCV25T3D
DCV35T3D
DCV45T3D
DCV50T3D
DCV62T3D
DCV76T3D
DCV20C3D
DCV25C3D
DCV35C3D
DCV45C3D
RDCV25C
RDCV35C
D
A
DCV20T1L
DCV25T1L
DCV35T1L
DCV45T1L
DCV50T1L
DCV62T1L
DCV76T1L
DCV20C1L
DCV25C1L
DCV35C1L
DCV45C1L
C WIDTH
C WIDTH
B
E
DCV20T2L
DCV25T2L
DCV35T2L
DCV45T2L
DCV50T2L
DCV62T2L
DCV76T2L
DCV20C2L
DCV25C2L
DCV35C2L
DCV45C2L
RDCV45TM
B
E
D
A
DCV20T3L
DCV25T3L
DCV35T3L
DCV45T3L
DCV50T3L
DCV62T3L
DCV76T3L
DCV20C3L
DCV25C3L
DCV35C3L
DCV45C3L
D
A
A
C WIDTH
3-7/16˝ [87]
3-1/4˝ [83]
4-3/8˝ [111]
4-3/8˝ [111]
7-1/4˝ [184]
7-1/4˝ [184]
7-7/8˝ [200]
3-7/16˝ [87]
3-1/4˝ [83]
4-3/8˝ [111]
4-3/8˝ [111]
C WIDTH
B
E
2-3/16˝ [56]
2-1/2˝ [64]
4-1/2˝ [114]
4-1/2˝ [114]
4-15/32˝ [113]
4-21/32˝ [118]
4-21/32˝ [118]
2-5/8˝ [67]
3˝ [76]
3-5/8˝ [91]
3-5/8˝ [91]
RDCV50TM
RDCV62TM
RDCV76TM
B
E
D
D
A
C WIDTH
B
E
D
A [A mm] B [B mm] C [C mm] D [D mm] E [E mm]
3-15/16˝ [100]
4-1/8˝ [105]
5-1/8˝ [130]
5-1/8˝ [130]
8-1/16˝ [205]
8-9/32˝ [210]
8-19/32˝ [218]
4-13/32˝ [112]
4-5/8˝ [117]
5-13/16˝ [147]
5-25/32˝ [147]
C WIDTH
4-13/16˝ [122]
4-31/32˝ [126]
6-1/16 [154]
7-7/32˝ [183]
7-29/32 [201]
8-3/4˝ [222]
9-7/8˝ [251]
5-27/32˝ [148]
6-21/32˝ [177]
7-21/32˝ [194]
8-27/32˝ [224]
RDCV45CM
B
E
D
A
A
25/32˝ [20]
7/8˝ [22]
1-9/32˝ [33]
1-9/32˝ [33]
1-9/16˝ [40]
1-29/32˝ [48]
2-1/2˝ [63]
1-25/32˝ [45]
2-3/4˝ [70]
3˝ [76]
3˝ [76]
RDCV DIMENSIONAL CHART
Connection Model A [A mm] B [B mm] C [C mm] D [D mm] E [E mm]
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
NPT Coupling
RDCV20T
RDCV25T
RDCV35T
RDCV45T
RDCV50T
RDCV62T
RDCV76T
RDCV20C
RDCV25C
RDCV35C
RDCV45C
3-15/16˝ [100]
4-1/8˝ [105]
5-1/8˝ [130]
5-25/32˝ [147]
8-1/16˝ [205]
8-9/32˝ [210]
8-19/32˝ [218]
4-13/32˝ [112]
4-5/8˝ [117]
5-13/16˝ [147]
5-25/32˝ [147]
2-31/32˝ [75]
3˝ [76]
4-29/32˝ [125]
5-5/32˝ [131]
5-7/8˝ [149]
6-11/16˝ [170]
7-27/32˝ [199]
4˝ [102]
5˝ [127]
5-15/32˝ [139]
6-25/32˝ [172]
3-7/16˝ [87]
3-1/4˝ [83]
4-3/8˝ [111]
4-3/8˝ [111]
7-1/4˝ [184]
7-1/4˝ [184]
7-7/8˝ [200]
3-7/16˝ [87]
3-1/4˝ [83]
4-3/8˝ [111]
4-3/8˝ [111]
2-3/16˝ [56]
2-1/2˝ [64]
4-1/2˝ [114]
3-5/8˝ [91]
4-15/32˝ [113]
4-21/32˝ [118]
4-21/32˝ [118]
2-5/8˝ [67]
3˝ [76]
3-5/8˝ [91]
3-5/8˝ [91]
25/32˝ [20]
7/8˝ [22]
1-9/32˝ [33]
3˝ [76]
1-9/16˝ [40]
1-29/32˝ [48]
2-1/2˝ [63]
1-25/32˝ [45]
2-3/4˝ [70]
3˝ [76]
3˝ [76]
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OPERATION
WARNING
may change position if power fails or is removed. Never insert any object or body part
into the valve body. Severe injury may occur.
Series DCV includes an integral solenoid and Series RDCV needs to be used with a
remote pilot solenoid valve. Both are normally closed valves. When the remote pilot
solenoid valve or integral solenoid opens, pressure is released (exhausted) from the
top of the diaphragm in the pulse valve. This allows the line pressure on the bottom
of the diaphragm to push the diaphragm up and open the main orice of the pulse
valve. When the solenoid then closes the pressure on the bottom and the top of the
diaphragm equalize closing the main orice of the pulse valve.
WARNING
been closed. Turn power on and increase pressure only after installation is complete.
LOCATION
Select a location that will not exceed the ambient temperature specications of
the valve. The system must be located in an enclosure that meets relevant safety
standards and electrical codes of the environment.
MOUNTING
The DCV/RDCV can be mounted in any position. For optimum life and performance it
is recommended that the unit be mounted vertically and upright to reduce the chance
of foreign matter accumulating in the valve. For DCV in weatherproof applications it is
recommended that the cable gland be positioned face down to avoid possible rainfall
or water from entry.
PROCESS CONNECTIONS
For DCV/RDCV with coupling connections:
1. Connect piping so that pneumatic input is the bottom connection and the outlet is
the side connection at 90°.
2. Stub pipe (blow tube) must be free of burrs, rust, oil, and other debris.
3. Disassemble compression ttings and place the retaining nut, retainer, and gasket
onto the piping. Make sure that the beveled edge of the gasket faces the valve
body.
4. Connect ttings to the valve body. Make sure that the pipe is inline with the valve
ports. Nut and seals are for connection only and should not be used for support
purposes.
Notes:
• Make sure pipes are anchored securely to avoid separation from the valve.
• Do not use the valve for leverage when connecting piping.
• Do not over-tighten retaining nut or valve damage may result. Tighten retaining
nuts just sufciently for sealing to prevent leakage. This is a gasket seal and does
not require excessive turning of the nut.
When working on the Actuator/Valve assembly, disconnect the air
or power supply to the actuator. Spring return actuators/valves
Before installation make sure all air pressure has been released,
electric power has been turned off, and air pressure source has
Wiring the DCV with DIN connector
1. Remove center screw and pull connector cover from the body.
2. Remove gasket and place small screwdriver in slot to pry out the terminal block
from the cover.
3. Thread wire through the gland nut, gland gasket, washer and connector cover.
4. Connect wires to proper terminals on the terminal block.
5. Snap terminal block back into the cover. The connector cover may be rotated in 90°
increments to position the cable entry as needed for the application. Reinstall the
center screw and screw back into the solenoid body.
MAINTENANCE
WARNING
and vent uid to a safe area before servicing.
The DCV/RDCV should be cleaned periodically. The amount of time between cleanings
depends on the application. Preventive Maintenance includes keeping media clean of
material and oil free, and periodic testing to ensure proper operation and to look for
wear or damage. Replacement diaphragm assemblies are available from the factory.
Solenoid Valve Troubleshooting
Problem Possible Cause Action Required
No pulse • No supply air
Leakage in outlet
port
Low pulse • Low air pressure • Check air supply pressure
Shaking noise • Valve screws are loose • Tighten the loose screws
Solenoid noise • Solenoid mounting screws
WARRANTY
The Series DCV/RDCV is not eld serviceable and should be returned if repair is
needed (eld repair should not be attempted an 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.
To prevent the possibility of death, serious injury or property
damage, turn off electrical power, depressurize system and unit,
• Check whether the air
compressor and valve have
• Air pressure is too high
• No voltage to RSV
• Solenoid is damaged
• Improper installation of inlet
port
are loose
been turned on
• Check the pressure of the
air supply
• Check supply voltage
• Send back for evaluation
• Check the pipe connections
between the inlet and outlet
• Verify that the air supply
was distributed properly
• Tighten the loose screws
For DCV/RDCV with NPT connections:
1. Connect piping so that pneumatic input is the bottom connection and the outlet is
the side connection at 90°.
2. Stub pipe (blow tube) must be free of burrs, rust, oil, and other debris.
3. Thread piping into the valve body. Make sure that the pipe is inline with the valve
ports. If using tape or pipe compound, apply to the male piping threads and use
sparingly as it may come loose and affect valve operation. Do not apply tape or
pipe compound directly to the female valve body threads.
Notes:
• Make sure pipes are anchored securely.
• Do not use the valve for leverage when connecting piping.
Pressure Connection from Remote Pilot Solenoid Valve (For RDCV units):
The RSV, remote pilot solenoid valve, should be mounted as close as possible to the
RDCV pulse valve. The maximum distance is 9.8 ft (3 m). Tubing from the remote
solenoid valve is connected to the exhaust port on the top of the RDCV pulse valve.
If using tape or pipe compound, apply to the male piping threads and use sparingly
as it may come loose and affect valve operation. Do not apply tape or pipe compound
directly to the female valve body threads.
Wiring Connections (For DCV units):
Wire in accordance with the National Electrical Code and local regulations. To aid in
wiring the solenoid on the DCV may be rotated 360°. It is recommended to use 18
AWG copper wire rated at 90°C or greater.
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Printed in U.S.A. 7/22 FR# 443335-01 Rev. 3©Copyright 2022 Dwyer Instruments, Inc.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000
Fax: 219-872-9057
www.dwyer-inst.com
e-mail: info@dwyermail.com
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