Valve Operation from Goyen

Mechanical Installation
The DD valves series valves allow the valve to be directly installed onto the inlet and outlet pipes without additional flange or pipe threads. Installation is achieved through compression nuts that provide an airtight seal. Valve must be independently restrained. These valves offer the same high performance as the "T" series valve with the same right angle construction. The valves may be operated either by integral pilot solenoid (CA models) or remote pilot solenoids (RCA models)
Typical Inlet Installation
The flange mount of the valve may be oriented to the pressure vessel as illustrated below.
Never mount the valve on the underside of the header or upside-down as this allows
the accumulation of moisture in the valve, which is detrimental to performance
Electrical Installation
To operate these main valve assemblies:

RCA versions should use Goyen pilot solenoid RCA3D, which can be electrically operated in a remote location.

CA versions are directly mounted with pilot operator.
* Refer to “Drawing Download” section for complete drawings and CAD downloads.

Operating Pressure Range all DD Valves
Maximum operating pressure 860 kPa (125 psi)
Recommended operating pressure 760 kPa (110 psi)
Minimum operating pressure30 kPa (5 psi)
Electrical Pulse times
Electrical "on time" ranges between 50 m sec to 500 m sec
Start-up Procedure for correct installation of GOYEN DD series valves ensure the following checks are satisfied:

ensure valves are fully secured in position

ensure dresser nuts are tightened to - 20nm (15 ft/lbs)

ensure blowtube is secured adequately to the valve outlet and reverse pulse filter wall.

the required air pressure has been applied to the header tank, ensuring compressed air is dry and free of particulates.

all joints around the valve installation do not leak air.

check the electrical connection at the remote pilot solenoid valve or on board the valve.

check valve exhaust outlet for adequate venting and noise suppression. in case of turbine applications, protection against particulate / vermin inclusions should be incorporated.

switch electrical control to continuous cycle and observe for several operating cycles. check for the correct valve opening sequence.
Fault Finding & Diagnostics, DD valve fails to open:

Check electrical signal to RCA or CA operator coil

Check for adequate air pressure and that it is present at inlet of the valve.

Check exhausts are free from obstructions
DD valve has resonance noise evident.

Check excessive silencer restriction in exhaust outlets

Check partial blockages of bleed paths

Check supply header capacity
DD valve fails to close

Check that pilot is closing

Check for blockages of bleed path

Check for diaphragm damage either in the membrane or seat
Schedule maintenance should be applied, however it is recommended that full inspection be
carried out within 2 years of service life.
RCA/CA operator kit K0380
Standard Coil kits Refer Coil Options
Diaphragm kits:
RCA/CA20DD k2000 Standard K2007 Viton
RCA/CA25DD K2501 Standard K2503 Viton
RCA/CA45DD K4502 Standard K4503