Stop Valve J41J-40 for Thermal Power Plant Power Plant｜YOYIK

Stop Valve J41J-40 for Thermal Power Plant Power Plant｜YOYIK
2. Product Introduction

YOYIK Stop Valve J41J-40 is a medium-high pressure carbon steel stop valve with PN40 (≤4.0MPa) nominal pressure, featuring a straight-through layout, flange connection and manual operation mode. It is specifically designed for medium isolation in power generation facilities and thermal power plants, especially suitable for auxiliary pipelines and instrument loop systems that require higher pressure-bearing capacity. Constructed of carbon steel (matching the "C" suffix), it boasts robust structural rigidity and excellent adaptability to complex industrial operating conditions.

This valve is primarily applied to medium isolation scenarios in thermal power plant auxiliary pipelines and instrument loops, compatible with various industrial media including water, saturated steam and hydraulic oil. It supports a maximum working temperature of 425℃ and a maximum working pressure of 4.0MPa (consistent with PN40), which can stably adapt to the fluctuating temperature and pressure conditions of power plant auxiliary systems, effectively ensuring the safe and continuous operation of the entire pipeline network.

3. Company Profile

Based in Deyang, YOYIK is a professional manufacturer of industrial valves and power plant spare parts, focusing on R&D, production and customization of power plant auxiliary pipeline valves, with products widely used in thermal power, chemical and steel industries.

4. Product Features & Operation Points

1. PN40 medium-high pressure design: The one-piece carbon steel valve body is engineered to withstand 4.0MPa working pressure, which fully meets the medium isolation requirements of thermal power plant auxiliary pipelines and instrument loops with higher pressure demands, ensuring long-term stable pressure-bearing performance without deformation.

2. Efficient and rapid isolation function: Equipped with a precise valve core structure, it can achieve rapid and tight cut-off of medium when pipeline faults or equipment maintenance occur, effectively preventing medium backflow and fault expansion, thus protecting the safety of power generation equipment and personnel.

3. Carbon steel material superiority: Adopting high-quality carbon steel through precision forging and heat treatment, it has outstanding high-temperature resistance and wear resistance, which can adapt to the harsh high-temperature and high-pressure environment of thermal power plants, extending the service life of the valve and reducing maintenance costs.

4. Reliable sealing and easy operation: Adopts advanced metal-to-metal seating sealing technology, which enhances sealing reliability and avoids medium leakage even under high-pressure conditions; the manual operation structure is humanized, easy to operate and labor-saving, suitable for narrow installation positions of power plant auxiliary equipment.

5. Standard compliance and convenient maintenance: Complies with GBT and API international standards, undergoes strict non-destructive testing and pressure test before leaving the factory to ensure product quality; the valve structure is optimized for easy disassembly and assembly, with good interchangeability of spare parts, and daily maintenance only requires regular inspection and cleaning.

5. Applications

• Thermal power plant medium-high pressure auxiliary pipeline systems

• Power plant instrument loop isolation lines

• Thermal power plant saturated steam auxiliary pipeline isolation

• Power generation facilities high-pressure feedwater auxiliary pipelines

• Chemical plant medium-high pressure process pipeline isolation

• Steel mill auxiliary equipment pipeline cut-off

• Thermal power plant high-pressure hydraulic auxiliary pipeline networks

6. Closing Statement

Specifications and configurations can be customized according to specific project requirements. Contact our technical team for detailed engineering support and performance data.

We have a wide supply of spare parts for power plants, as follows:
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Stop valve J41J-40

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Stop valve J41J-40

DFYLCTY-2026-1-26-A