Series lt leak test valves & manifolds, Applications examples – Ross Controls PRECONFIGURED LEAK TEST MANIFOLDS SERIES LT User Manual

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Series LT Leak Test Valves & Manifolds

Applications Examples

The Dale series CX and LT can be combined to simplify the most complex test circuits. The LT manifold with integrated sensor
ports is the primary valve used for the fill, isolate and test functions. In this example the test port of the LT is connected to the
CX manifold allowing four chambers to be tested one at a time. The flexibility of combining the LT and CX manifolds creates a
compact package, reduces leak paths, and provides an all in one test solution.

The CX series manifold port pressure independence and bidirectional flow capabilities allows the user to create a simple manifold
solution for the most complex test circuits. The following example shows a test performing a vacuum test, followed by a low
pressure test, and finishing with a high pressure test using a single CX manifold. The vacuum, low pressure and high pressure
valves are NC (normally closed). The isolation and exhaust valves are NO (normally open), allowing the valve to go to a safe
mode if power is cut.

Note: Once the unit under test is filled and the
isolation poppet is closed the pressure or vacuum
in the common valve chamber can be exhausted.
This prevents the possibility of leak up that could
cause the unit under test to pass a test it should
have failed.

Manifold Shown below:
2/2 Valve, 4-Station, Normally Closed
Port 1/2”, 24 Volts DC
CX14NA47514W

Manifold Shown below:
3/4, Leak Test Manifold, 24 Volts DC
LT32NA27500W

Vacuum

Inlet

Low

Pressure

Inlet

High

Pressure

Inlet Unit Under

Test

Exhaust

Common

Inlet

Port Blocked

Part Numbers of Electrical Connectors

Valve Port

Lighted Connector Only

Lighted Connector Pre-wired*

Size

24 volts DC

110 Volts AC

24 volts DC

110 Volts AC

1/4, 1/2

2306K77W

2306K77Z

2307K77W

2307K77Z

*Pre-wired connectors are lighted and include a 2 meter (61/2 ft.) cord.

ELECTRICAL CONNECTORS:

For Series LT Valves.

To Chambers Being Tested

TEST

INLET

Supply