Brief introduction of high-sensitivity steam pressure reducing valve:

The YG43 pilot valve type piston pressure reducing valve is made of cast steel body, which is composed of two parts: the main valve and the pilot valve. The high-sensitivity steam pressure reducing valve sets the outlet pressure by adjusting the spring pressure, and uses the diaphragm to sense the change in outlet pressure. Through the opening and closing of the pilot valve, the piston is driven to adjust the flow area of the throttling part of the main valve to realize the pressure reducing and stabilizing function. Mainly used for steam pipelines, suitable for steam pipelines with large changes in inlet pressure and flow.

Advantages of using high-sensitivity steam pressure reducing valve:

1. The YG43H steam pressure reducing valve improves the sensing efficiency of outlet pressure changes, improves sensitivity, and greatly reduces pressure deviation caused by upstream pressure changes, flow changes and other factors. 2. Improved streamline distribution and reduced noise. 3. YG43H steam pressure reducing valve improves the sealing surface structure and prolongs the life of the sealing surface. 4. It is intrinsically reliable and can be used in hazardous areas.

Technical parameters of high-sensitivity steam pressure reducing valve:

Body material

Cast steel GB/T 12229 WCB

Different materials can be selected according to the pressure and temperature of the working medium

Valve body design pressure: PN25

Work pressure

Saturated steam: 19.0Bar

Setting pressure: 16.0Mpa

Working temperature: 300℃

Specifications and dimensions of high-sensitivity steam pressure reducing valve:

Thread connection: 3/4~2 BSP NPT

Flange connection: DN20-DN100

BS16/25 GB16/25 DIN16/25

JIS10/16 ANSI 150

Pressure control range:

1.0~3.0Bar

2.0~8.0bar

7.0~16.0bar

Installation Instructions for High Sensitivity Pressure Reducing Valve YG43H:

1. The pressure reducing valve YG43H should be installed in a place that is convenient for operation and maintenance, and it must be installed upright on a horizontal pipeline. Care should be taken to ensure that the flow direction of the medium in the pipeline is consistent with the direction indicated by the arrow on the valve body. Do not install it backwards.

2. When the high-sensitivity pressure reducing valve is installed and used, the shut-off valve on the bypass pipeline should be opened first to remove the condensed water and steam-water mixture in the pipeline to prevent water hammer from damaging the pressure reducing valve when the pressure reducing valve is opened. , When there is no abnormal phenomenon, slowly rotate the adjusting screw clockwise to adjust the outlet pressure to the required pressure. After adjustment, back pressure the lock nut and screw on the protective cover.

3. The high-sensitivity pressure reducing valve should be equipped with a filter to prevent impurities in the medium from entering the pressure reducing valve and affecting its performance.

4. A section of straight pipe before and after the installed pressure reducing valve, the length of the straight pipe before the valve is 600mm, and the length of the straight pipe after the valve is 1000mm.

High-sensitivity steam pressure reducing valve model:

Cast steel: YG43H-16C, YG43H-25C

Stainless steel: YG43H-16P, YG43H-25P

Working principle of high sensitivity steam pressure reducing valve YG43H:

The high-sensitivity pressure reducing valve YG43H is a pilot piston pressure reducing valve, which is developed with reference to the Japanese valve pressure reducing valve RP-6. The high-sensitivity steam pressure reducing valve has made the following improvements on the basis of the ordinary pressure reducing valve. The piston area is enlarged, the throttle structure is changed, the sealing form is changed, the pilot valve structure and the adjustment spring form are improved, thereby improving the product performance. It consists of two parts: main valve and pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, spring and other parts. The pilot valve is mainly composed of valve seat, valve clack, diaphragm, spring, adjusting spring and other parts. The outlet pressure is set by adjusting the spring pressure, the diaphragm is used to sense the outlet pressure change, and the pilot valve is opened and closed to drive the piston to adjust the flow area of the main valve throttling part to realize the function of pressure reduction and stabilization.

Features of high sensitivity pressure reducing valve YG43H-16C:

1. Improve the sensing efficiency of outlet pressure changes, improve the sensitivity, and greatly reduce the pressure deviation caused by upstream pressure changes, flow changes and other factors.

2. Improved streamline distribution and reduced noise.

3. Improved the sealing surface structure and prolonged the life of the sealing surface.