Specifications; Unpacking And Inspection; Description; Theory Of Operation - TECHCON SYSTEMS TS941 Manuel D'utilisation

1. Specifications

TS941
Size 4.7" length X 1.5" diameter
(119.4mm X 38.1 mm)
Weight 1.6lb (0.728kg)
Fluid Inlet Port 3/8"NPT female
Fluid Outlet Port 1/4" NPT female
Air Inlet Port 1/4" NPT female
Auxiliary Air Inlet Port 1/8" NPT
Minimum Air Pressure 70 psi
Required (4.8 bar)
Maximum Fluid Pressure 2,500 psi (172 bar)
Operating Frequency Exceed 400 cycles/min.
Wetted Parts Fluid housing (Stainless
steel), Valve spool
(Hard Chrome plated
Stainless Steel), Upper and
Lower Seals (UHMWPE
Seal with EPR o-ring)
Techcon Systems is an OK International Brand
Copyright © All Rights Reserved • TS941 Rev 04/04
3
TS941A
4.7" length X 1.5" diameter
(119.4mm X 38.1 mm)
1.61lb (0.731kg)
1/4"NPT female
1/4" NPT female
1/4" NPT female
1/8" NPT
70 psi
(4.8 bar)
2,500 psi (172 bar)
Exceed 400 cycles/min.
Fluid housing (Stainless
steel), Valve spool
(Hard Chrome plated
Stainless Steel), Upper and
Lower Seals (UHMWPE
Seal with EPR o-ring)

2. Unpacking and inspection

Carefully unpack the valve and examine the items contained in the carton.
These will include:
•
Valve Assembly
•
User Guide
•
Valve Air Hose

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. 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.
Open Position
Closed Position
Techcon Systems is an OK International Brand
Copyright © All Rights Reserved • TS941 Rev 04/04
4