YST665Y Pneumatic Y-shaped Drain Valve 501

Product brief

The ZMQSY series pneumatic thin film Y-shaped steam trap is a new generation of steam trap valve specially designed and produced by our company based on the drainage of thermal power plant equipment. The product has a nearly linear flow design, reduces flow resistance, secondary throttling principle, reduces erosion, and improves service life. The valve core and seat are made of solid hard alloy, which can close internal leakage<=VI level, with a detachable middle chamber sealing design to prevent external leakage and facilitate maintenance. They can also be used in flammable and explosive environments. According to the signal from the control system or regulating instrument, the valve can be cut off or opened to meet the requirements of the controlled parameters. Therefore, it is widely used for remote control in industries such as thermal power plants.
This product is divided into positive and negative effects, with a nominal diameter grade DN (MM) ranging from 20 to 100; The nominal pressure rating PN is divided into multiple levels such as 150lb (2.0MPa); Gas source pressure (MPa) 0. 14-0. 4. Signal range Pr (KPa) 20-100; 40-200； The leakage rate is almost zero. There are multiple specifications to choose from for this product.

ZMQSY pneumatic thin film Y-shaped drain valve; This valve consists of a new series of pneumatic diaphragm actuators and a Y-shaped drain valve (Figure 1). The Y-shaped drain valve is a specially designed regulating valve body with welded ends, suitable for specific piping.
The executing agency has two forms of action: positive and negative; When the signal pressure increases, the push rod extends out of the diaphragm chamber, which is called positive action, and cooperates with the valve to form an air tight type. When the signal pressure increases, the push rod retreats into the membrane chamber, which is called a reaction and cooperates with the valve to form an open circuit.
Its principle:
When the signal pressure is input into the diaphragm chamber, it generates thrust on the diaphragm, compresses the spring, moves the push rod, drives the valve stem, and changes the flow area between the valve core and the valve seat until the reaction force of the spring is balanced with the thrust of the signal pressure acting on the diaphragm, thereby achieving the purpose of automatic adjustment of process parameters.

ZMQSY series pneumatic thin film Y-shaped drain valve specifications and technical parameters:
Nominal diameter DN 20 25 32 40 50 65 80 100
Flow coefficient 5 8 12 17 29 43 70 100
Rated travel 16 25 40
Effective area of membrane 280 400 600
Nominal pressure 150LB (2.0MPa) -1500LB (25.0MPa)
Working temperature -445
Signal range 20-100 40-200
Origin pressure 0.14-0.04
Allow leakage to be less than level VI
Connecting thread M10X1 M16X1.5