I. Product Overview
The flanged rising stem gate valve for fire protection systems adopts a flanged connection structure, with both ends of the valve body bolted to pipeline flanges. Its defining feature is the exposed stem that moves vertically in sync with the gate (rising stem design). The gate and seat utilize a flat sealing structure, paired with water-resistant sealing materials to ensure reliable sealing performance.
This valve is specifically designed for fire protection applications. It is suitable for clean water media, with operating temperatures ≤80℃ and working pressure ≤1.6 MPa. Typical applications include automatic sprinkler systems, fire hydrant systems, and main fire pipelines. The rising stem design allows for direct visual inspection of the valve’s open/closed status, ensuring operational clarity and safety in fire protection systems.
II. Product Features
Rising Stem Design The stem moves vertically with the gate and remains exposed, allowing the valve’s open/closed status to be directly observed by stem height. No additional indicators are required, making it ideal for fire systems that demand clear visual monitoring of valve position.
High-Strength Flanged Connection The flanged ends provide strong mechanical stability and excellent sealing performance, capable of withstanding pressure fluctuations in fire pipelines. Suitable for large-diameter pipe systems, the connection ensures reliable installation and facilitates maintenance and replacement.
Precision Flat Sealing The gate and seat are precisely machined to form a flat sealing surface. When closed, the valve achieves tight sealing, effectively preventing leakage of fire media and maintaining system pressure stability—meeting the sealing requirements of fire protection conditions.
Durable Materials and Corrosion Resistance The valve body is made of ductile iron or cast steel, with anti-corrosion treatment for superior rust resistance. The gate is made of high-quality steel with high strength and wear resistance. Combined with the mechanical transmission of the rising stem, the valve offers long service life and is well-suited for the demanding standby conditions of fire protection systems.
Efficient Flow Capacity When fully open, the gate is lifted completely into the upper part of the valve body, creating an unobstructed flow path with minimal resistance. This ensures rapid and sufficient delivery of fire media during emergencies, meeting high-volume water supply demands.
Flexible Operation Manual operation is standard (with optional electric actuator). Manual control offers smooth opening and closing, high transmission efficiency, and moderate torque—ideal for quick response in emergency situations. Electric actuation enables remote control and suits various fire protection scenarios.
III. Main Standards
The valve’s design, performance, and installation comply with the following national and industry standards:
• GB 5135.6-2019 – Automatic Sprinkler System – Part 6: General Valves • GB/T 12234-2019 – Steel Gate Valves for Petroleum, Petrochemical, and Related Industries • Mandatory certification standards for fire protection products
Specific technical parameters, performance indicators, and installation requirements should be based on the product’s factory-issued technical documentation.
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