锻钢闸阀, 楔式闸阀

Product Overview

This 锻钢闸阀 is a universal high-pressure on-off control valve for industrial pipeline systems. It adopts an integral forged steel body and realizes full open and full close control through gate lifting, specially designed for small-bore high-temperature, high-pressure and ultra-high-pressure harsh working conditions.

It is available in GB standard DN15–DN50 (ANSI standard NPS 1/2″–2″), with full pressure ratings of ANSI Class 150–Class 2500 & GB PN16–PN420 (Class 2500 corresponds to PN420, 420 bar working pressure). It strictly complies with global mainstream industrial standards including GB, ANSI/ASME and API.

Widely used in high-pressure pipeline scenarios such as power stations, petrochemical, oil and gas transportation, thermal systems and water treatment, it fully meets the application requirements of various industrial working conditions worldwide.

Key Features

1. Integral forged steel body, high strength for ultra-high pressure resistance

   The valve body is integrally forged from high-quality forged steel, free of casting pores, sand holes and shrinkage defects, with dense metal structure, excellent pressure bearing capacity and impact resistance. It can operate stably for a long time under high-temperature, high-pressure and continuous working conditions, with maximum adaptability to Class 2500 (PN420) ultra-high pressure systems, fully meeting the requirements of 420 bar working pressure conditions.

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2. Precision lapped sealing pair, zero leakage shut-off

   The sealing surfaces of the gate and seat are precision lapped and matched. The metal-to-metal hard seal structure has high fitting degree, realizing tight shut-off without internal leakage and medium backflow. The sealing surface is wear-resistant, erosion-resistant and corrosion-resistant, maintaining reliable sealing even under ultra-high pressure working conditions, with a service life much longer than that of ordinary cast gate valves.

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3. Rising stem structure, stable and controllable opening and closing

   It adopts an outside screw and yoke rising stem design. During opening and closing, the valve stem only moves up and down without rotation, which effectively protects the valve stem thread and packing seal. At the same time, the valve opening can be intuitively judged by the lifting height of the stem, with accurate operation, stable opening and closing, and no jamming, suitable for stable operation under high pressure working conditions.

   

4. Full material coverage, adaptable to various media

   The core material of the valve body can be selected from A105 carbon forged steel, F304/F316 stainless steel forged steel, etc., suitable for water, steam, oil, gas, corrosive media and other working conditions, with an applicable temperature range of -29℃ ~ 550℃, covering most industrial application scenarios.

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5. Dual standard compliance for global universal use

   Bore size, connection dimensions, pressure ratings and inspection standards comply with both GB and ANSI/ASME specifications. Flanged, socket weld and butt weld connection methods are suitable for pipeline systems in different regions around the world, with accurately corresponding pressure ratings, meeting the procurement and installation standards of domestic and overseas customers.

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6. Special compact design for small bores

   Specially customized for DN15–DN50 (NPS 1/2″–2″) small-bore high-pressure pipelines, with compact overall structure and small installation space requirement, suitable for various compact industrial systems and equipment supporting. There is no attenuation of pressure bearing and sealing performance under small-bore working conditions, perfectly adapting to ultra-high pressure small-bore scenarios.

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7. Simple structure & easy maintenance

   The overall structure is simple without complex transmission parts, with low failure rate. Wearing parts such as stuffing box and sealing pair are easy to replace, and online maintenance is available, which greatly reduces the on-site operation and maintenance cost.

    

Applications

1. High-temperature & high-pressure/ultra-high-pressure steam small-bore pipelines for power stations and boilers
2. High-pressure/ultra-high-pressure process pipelines in petrochemical and refinery industries
3. Ultra-high-pressure small-bore pipelines for oil and gas wellheads and gathering systems
4. High-pressure thermal oil circulation systems
5. High-pressure pipeline systems for water treatment and municipal engineering
6. Universal high-pressure/ultra-high-pressure pipeline on-off control in chemical, power, metallurgy and other industries

Product Summary

This 锻钢闸阀 takes the integral forged steel high-strength structure as the core, and has the core advantages of reliable sealing, stable opening and closing, high temperature and high pressure resistance, and wide adaptability. It covers full sizes of GB DN15–DN50 (ANSI NPS 1/2″–2″) and full pressure ratings of Class 150–Class 2500 (PN16–PN420), with a maximum bearing capacity of 420 bar ultra-high pressure working conditions, strictly complying with global mainstream industrial standards.

With compact structure, convenient maintenance and long service life, it is a universal, high-reliability preferred valve for on-off control in small-bore high-temperature and high-pressure/ultra-high-pressure industrial pipeline systems.