Products Description
API High-Temperature Gate Valve is an on/off control device designed for full-open or full-closed operation, featuring a gate plate that moves perpendicular to the fluid flow direction. It does not support flow regulation and is primarily used in high-temperature and high-pressure pipeline applications across industries such as petroleum, chemical, power, and energy.
Key Features & Design Specifications:
Material & Cooling Solutions
Valve Body: Typically made of ductile iron or cast steel.
High-Temperature Adaptation: Some models incorporate cooling fins or water-cooling systems to withstand temperatures exceeding 500°C.
Gate Plate Types & Drive Mechanisms
Gate Plate Structures: Divided into wedge-type (single/double gate, elastic gate) and parallel-type.
Stem Drive Options: Includes rising stem (threaded) and non-rising stem (rotary) configurations.
Sealing Technology
Self-Sealing Principle: Combines hardfaced alloy sealing surfaces with flexible graphite packing.
Compensation Mechanism: Elastic gate plates compensate for machining deviations to enhance sealing performance.
Installation & Operation Requirements
Installation: Double-gate valves must be installed vertically; models with bypass valves require pressure equalization prior to operation.
Actuation: Available with bevel gear drives or electric actuators for diverse operational needs.
This design ensures robust performance in extreme high-pressure and high-temperature environments while maintaining reliable sealing and operational efficiency.
Products Specification
Operating Pressure Differential: 150lb-2500lb
Applicable Media: Weak Acids and Alkalis
Pressure Environment: High Pressure
Media Temperature: -200-550°C
Drive Mode: Manual, Pneumatic, Electric, Hydraulic
Dimensions: DN50-DN900
Application: Water, Oil, and Nitric Acid Liquid Transportation and Shutoff
Advantages:
Low Fluid Resistance – Minimizes energy loss during flow.
Reduced Erosion on Sealing Surfaces – Sealing faces experience less medium冲刷 (冲刷:冲刷 erosion) and wear.
Easier Operation – Requires less effort to open and close compared to other valve types.
Unrestricted Flow Direction – No flow disturbance or pressure drop; media can flow in either direction.
Simple & Compact Design – Short structural length, good manufacturability, and wide applicability.
Disadvantages:
Sealing Face Erosion & Scoring – Prone to erosion and wear between sealing surfaces, making maintenance challenging.
Large Size & Space Requirements – Requires significant installation space and longer opening/closing time due to its size.
Complex Structure – More intricate design compared to simpler valve types.
API High Temperature Gate Valve for sale
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