Y43H Pilot-Operated Steam Pressure Reducing Valve Overview

The Y43H pilot-operated steam pressure reducing valve assembly is a specialized pressure regulating unit designed for steam systems, comprising a pilot-operated pressure reducing valve, upstream and downstream isolation valves, a filter, pressure gauges, and associated piping accessories. This valve assembly utilizes a pilot-piston or pilot-diaphragm structure, where changes in downstream pressure are sensed by the pilot valve to drive the main valve for precise adjustment, achieving stable reduction of inlet steam pressure. The valve body is constructed from high-temperature-resistant cast steel or stainless steel, specifically designed for saturated and superheated steam conditions. This integrated valve assembly features high regulation accuracy and excellent stability, making it widely applicable in industrial steam systems such as power plants, petrochemicals, textiles, and food processing, providing reliable pressure control and system protection for steam-consuming equipment.

Y43H Pilot-Operated Steam Pressure Reducing Valve Product Image

Y43H Pilot-Operated Steam Pressure Reducing Valve Features

1. High-precision pilot-operated regulation: Utilizes a pilot control principle that responds sensitively to downstream pressure changes, offering high adjustment accuracy and superior pressure stabilization compared to direct-acting pressure reducing valves.

2. Specialized design for steam conditions: The valve assembly structure and materials are optimized for high-temperature steam, providing resistance to erosion and thermal deformation, suitable for saturated steam and systems with a certain degree of superheat.

3. Integrated safety configuration: Standard equipment includes an inlet filter, upstream and downstream isolation valves, dual pressure gauges, and a safety valve interface, offering comprehensive pressure monitoring, impurity filtration, and system protection.

4. Easy maintenance and stable operation: The pilot valve and main valve can be inspected and repaired separately. The filter screen can be easily cleaned and seals conveniently replaced. The valve assembly operates smoothly with strong anti-interference capability.

5. Wide range of applications: Can be adapted to steam pipelines with different pressure ratings. By replacing the pilot valve spring or adjusting the pilot valve setting, various pressure reduction ratios and flow requirements can be met.

  Y43H Pilot-Operated Piston Type Steam Pressure Reducing Valve Structure Diagram

Parts Name Material List

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard GB/T12221.

2. The connecting flange shall conform to the standard GB/T 17241.6

Y43H-64 Pilot-Operated Steam Pressure Reducing Valve Dimensions Table

Due to the rapid R&D iteration speed of valve products from China Kaivex Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!