锻钢闸阀, 楔式闸阀

Product Overview

This 锻钢自密封闸阀 adopts self-sealing structure as the core sealing design, specially developed for ultra-high pressure working conditions. Based on the self-sealing pressure self-tightening principle, it realizes sealing fit by relying on the medium pressure, and the higher the pressure, the tighter the self-sealing effect, achieving zero pipeline leakage fundamentally.

It is available in GB standard DN15–DN50 (ANSI NPS 1/2″–2″) and pressure ratings of ANSI Class 150–Class 2500 & GB PN16–PN420, strictly complying with global mainstream industrial standards such as GB and ANSI/ASME. With excellent self-sealing performance, it is widely used in ultra-high pressure pipelines in power stations, petrochemical, oil and gas transportation, thermal systems and other fields that require extreme self-sealing reliability, meeting the needs of global markets.

Key Features

1. Core self-sealing structure, pressure self-tightening for tighter sealing

   Adopts an integrated structure of professional self-sealing components + self-sealing seat, which is the core technology of the valve. The self-sealing principle means that medium pressure acts directly on the sealing parts, automatically compressing the sealing surface to form a seal without external assistance. The self-sealing effect is continuously enhanced with the increase of medium pressure, completely solving the leakage problem under ultra-high pressure, and the self-sealing reliability is far better than ordinary sealing forms.

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2. Self-sealing zero leakage, safe for harsh working conditions

   Relying on the unique advantages of self-sealing structure, it achieves fully fitted sealing between the seat and valve body. The self-sealing will not fail or leak under high temperature and ultra-high pressure environments, perfectly suitable for steam, heat-conducting oil, flammable and explosive media, with stable and durable self-sealing performance.

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3. Integral forged steel body + self-sealing structure for stronger pressure resistance

   The valve body is integrally forged from high-quality forged steel, free of air holes and casting defects, perfectly matched with the self-sealing structure. It can ensure the stable operation of self-sealing function under Class 2500 ultra-high pressure for a long time.

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4. Gate structure matched with self-sealing for more reliable on-off control

   Lifting gate design features smooth flow passage and low resistance. Cooperated with self-sealing structure, it realizes accurate pipeline on-off control, with wear-resistant and scouring-resistant sealing surfaces. The self-sealing and gate structure provide dual guarantees for stable operation.

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5. Special for small bores, self-sealing performance remains intact

   Customized for small-bore high-pressure pipelines of GB DN15–DN50 (ANSI NPS 1/2″–2″). The self-sealing structure can still give full play to the advantage of pressure self-tightening in small-bore scenarios, with stable self-sealing effect.

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6. Dual standard compatibility, self-sealing valve for global use

   Dimensions, connections and pressure ratings comply with both GB and ANSI/ASME standards. The self-sealing design is suitable for all kinds of ultra-high pressure pipeline systems worldwide.

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7. Full coverage of ultra-high pressure grades, self-sealing for all scenarios

   ANSI Class 150–Class 2500 and GB PN16–PN420, stable self-sealing can be achieved in the full pressure range, meeting the requirements of various ultra-high pressure systems.

Applications

1. Ultra-high pressure small-bore pipelines for power stations and boilers requiring self-sealing
2. High and ultra-high pressure process pipelines in petrochemical and refinery industries relying on self-sealing
3. Ultra-high pressure small-bore pipelines for oil and gas wellheads and gathering systems requiring self-sealing zero leakage
4. Ultra-high pressure thermal oil circulation systems needing self-sealing
5. Various high-pressure pipeline systems with extreme requirements for self-sealing reliability

Product Summary