Tuesday, December 6, 2011

Two-Way Valve (Control valve System)

Two-Way Valve

Parker Brass Two-Way Ball Valve with PCTFE Seat, 1/4" NPT Female





Principles of Two-Way, Three-Way Valve.
The entrance and exit one way in which a valve to control the flow or not flow. Or flow in small amounts. Actuator The system is based on the increasing and decreasing pressure.

The valves are dim. Or open the flow of water. As required by Aqua. The temperature itself.

In a Two-Way will notice that. Power cycled near Pump it must carry a lot of pressure. Thus, the selection of Two-Way must take into account the Close Off Pressure by

Therefore, when using Two-Way is often used in conjunction with other automated systems such as BAS, CHILLER MANAGER order to be able to use the device in the system.


Three-Way Valve


Moeller Fuel Tank Three-Way Valve (3/8", Brass)


Principles of Three-Way Valve.
3 Way Mixing Valve with inlet 2 and the combined solution is one of the 3 Way Mixing Valve for use in the Process of production may be working in the water with a temperature difference between two points, to mix or Mix out to be. temperature output as required. However, as we used in the HVAC 3 Way Mixing Valve does not mix the water from the second point, but the Mixing Valve The water from the Line Supply will be split into two and the one to be passed to the Coil to cool in the volume. more or less according to the Actuator is then forwarded to the inlet valve of the A section, the remaining water is sent to the inlet valve to the B to collect the 3 Way Valve passed to Return Line to PORT C. 3 Way Mixing Valve is installed in the HVAC system to be installed on the Return.

Because of that task. As a result, this system does not have a change of Pressure The need for automatic control device to save power too much. 



Control Circuit


Advantages of 2 Way Valve is a valve is cheap. The installation was. I have to just 2 points.
Disadvantages of 2 Way Valve is opened or closed. Or even to dim the flow rate will affect the Unit Valve side always.
The disadvantage is that it is the Close Off Pressure, which is the value that represents the ability to block, the water flow from the exit to close that can block Pressure between the two sides up to a couple of Psi in the case. Proportional 2 Way Valve Control Valve Authority be given to the poor.


The advantages of 3 Way Valve is a high balance. Because the water that each Unit will have a constant flow rate. Only the internal management of the Unit will allow water to flow into the Coil.
More or less depending on the system 3 Way Valve and Actuator with 3 Way Valve Flowrate in a system that is unable to do more systems.
So much energy. And would require additional equipment and piping in the Line By Pass.

12v DC 4mm 1/4" Normally Closed Stainless Steel Viton 2-Way Solenoid Valve



Prince LS-3010-2 Directional Control Valve, Logsplitter, 2 Ways, Spring Center to Neutral, Cast Iron, 2750 psi, Lever Handle, 25 gpm, In/Out: 3/4 NPTF, Work: 3/4 NPTF






110 VAC Normally Closed 2-Way Solenoid Valve 3/8" NPT Brass Body NBR Seals





Parker Brass Two-Way Ball Valve with PCTFE Seat, 1/8" NPT Female





Industrial Grade 1PZA1 Three Way Ball Valve, 1/2 In NPT, Brass




1/2" 3 Way S.S. Ball Valves W/ Mounting Pad - L Port ISO 9001, NPT Threaded





Iwata Airbrush Accessories - 3-Way Valve Assembly

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