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2014-10 · Flow Diversion Device with Proximity switch
Dual Stem Device –
Test Procedures
The following procedures have been developed by GEA
Tuchenhagen to comply with the Pasteurized Milk
Ordinance for the Dual Stem Device Assembly.
Device Assembly –
Dual Stem Device
Apparatus
Limit Test Stop is supplied with valve Spacer, Part. no.
221-105.32, set to 0.059 inches.
Procedure
The Limit Test Stop is supplied as standard with the
Divert Valve and the Leak Detect valve.
• Set the Divert Valve to the Divert Flow position.
• Lower the Limit Test Stop by turning Clockwise until
it touches the housing plate.
• Lower the Lock Nut until it touches the Limit Test
Stop – see figure A.
• Set the Divert Valve to Forward Flow Position.
• Lower the Limit Test Stop by 0.059" inches from the
Lock Nut using the Spacer provided to set the gap
accurately – see figure B.
• Lock the Limit Test Stop in place with the Lock Nut.
• Activate the valve to Divert Flow Position.
• The metering pump or any other flow promoting
device should not start. See Corrective Action if the
metering pump does not respond as indicated.
After test:
• Set the valve to Forward Flow Position.
• Slacken the lock nut and raise the Limit Test Stop by
turning Anti-Clockwise to the normal position as
shown in picture C. Tighten the lock nut against the
Limit Test Stop.
• Repeat the above steps for the Leak Detect Valve.
Corrective Action
If the metering pump fails to respond as indicated, con-
duct an investigation of the Flow Diversion Valve, the
sensor and wiring to correct the problem.
Figure B
: Test Position 2
Figure C
: Normal Position
Set Gap
0.059 inches
with Spacer
Limit Test Stop
Lock Nut
Figure A
: Test Position 1
Limit Test Stop
Lock Nut
Limit Test Stop
Lock Nut