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DIAPHRAGM VALVE-EXPANSION

Diaphragm valve – expansion

JK-matic diaphragm valve expansion is divided into eight major categories, namely: normally closed diaphragm valve, limit diaphragm valve, the signal diaphragm valve, indicating the diaphragm valve, auxiliary open diaphragm valve, auxiliary close diaphragm valve, electromagnetic diaphragm valve, Level diaphragm valve. Below, we are these eight kinds of diaphragm valve are introduced.


1. Normally closed diaphragm valve





working principle:

Close the valve: control pressure source connected with the diaphragm on the control chamber, the diaphragm through the stem to push the valve seat, which cut off the water to close the valve.

Open the valve: the control pressure source will cause the diaphragm under the control chamber, this time the upper and lower diaphragm pressure balance of water pressure through their own push the stem, which is easy to form through the cavity, the fluid through.



2. Limit stop diaphragm valve

Work characteristics:

Adjust the knob by adjusting the height of the valve seat to adjust the degree of opening in order to achieve the purpose of controlling the flow of water.



3. Signal switch diaphragm valve


Signal switch (normally open): The control pressure source (water or gas source pressure equal to or greater than the water pressure) causes diaphragm control chamber, when the upper chamber pressure (pressure greater than 0.1MPa), the valve is closed, the pressure switch The point is closed. When the upper chamber pressure relief, the valve opens, the pressure switch contacts open.

Signal switch (normally closed): The control pressure source (water or gas source pressure equal to or greater than the water pressure) leads to the control chamber on the diaphragm, when the upper chamber pressure (pressure greater than 0.1MPa), the valve closed, pressure switch Point off. When the pressure on the strong pressure relief, the valve opens, the pressure switch contact closure.



4. Position diaphragm valve


Work characteristics:

When the valve is open, through the valve piston to promote the upward movement of the instructions mandrel, this time only exposed rods, indicating the role of valve opening.

When the valve is closed, the piston moves down. The indicator lever is reset by the return spring.



5. Spring-assist open diaphragm valve


Work characteristics:

Diaphragm compression chamber installed under the spring through the spring tension to help push the valve seat up to play the assist valve to open the purpose.



6.    Spring-assist close diaphragm valve

Work characteristics:

Diaphragm compression chamber installed on the spring, through the spring tension to help push the valve seat down, play an assit valve to close the purpose.



7. Solenoid diaphragm valve


Work characteristics:

Valve cover signal hole to install the solenoid valve, the solenoid valve power switch on the pressure source signal control, to control the purpose of diaphragm valve switch.



8. Liquid level diaphragm valve

Work characteristics:

Through the stainless steel ball valve to control the diaphragm adjustment knob, to control the purpose of diaphragm valve switch.



Downloads

No.
Description Downloads


1 Y52 extra function selection guide
/ Y52 extra function selection guide.pdf