4
4
3
6
5
7
2
2.
UNPACKING AND INSPECTION
Carefully unpack the valve and examine the items contained in the carton.
These will include:
•
Valve Assembly
•
User Guide
•
Fitting and Valve Air Hose
Inspect the unit for any damaged which may have occurred in transit. If such damage has occurred,
notify the carrier at once. Claim for damage must be made by the consignee to the carrier, and should be
reported to the manufacturer.
3.
DESCRIPTION
The TS941 spool valve is based on a balanced spool design for a fast “ON/OFF” dispensing action. The
hardened spool slides in reinforced UHMWPE seals and it suitable for use with fluids having viscosity
of 100 to over 3,000,000 cps at pressure up to 2,500 psi (172 bars). An internal spring return makes the
valve fully adaptable for use with Techcon Systems time/pressure controllers.
4.
THEORY OF OPERATION
The TS941 valve is a normally closed spool valve. When air pressure is applied at air inlet port (1), the
spool assembly (2) moves forward to the open position, allowing the fluid to flow from the fluid inlet
port (3) to the fluid outlet port (4). Relieving the input air pressure allows the return spring (5) to pull
the spool assembly back in the close position, stopping the fluid flow. During the closing position, the
spool movement creates a “suck-back” anti-drip feature.
An Oil chamber (6) is provided above the upper seal to create an additional liquid seal that will prevent
moisture from being carried on the spool. The auxiliary air inlet port (7) is provided so that the valve
may be connected for air closing with or without the spring.
1
Open Position
Closed Position
Figure 2.0
