锻钢闸阀, 楔式闸阀

Product Overview

This bellows type forged steel gate valve adopts an integral forged steel body with bellows seal structure, which completely eliminates stem leakage and realizes zero-leakage sealing. It is specially designed for small-bore high-temperature, high-pressure and ultra-high-pressure working conditions.

It is available in GB standard DN15–DN50 (ANSI: NPS 1/2″–2″), with pressure ratings including ANSI Class 150–Class 2500 and GB PN16–PN420. It is fully compliant with mainstream global industrial standards such as GB and ANSI/ASME.

It is widely used in high-pressure pipelines with extremely high sealing requirements in power stations, petrochemical, oil and gas transportation, thermal systems and other fields, suitable for global markets.

Key Features

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

   Fully forged structure without casting defects, high density, excellent pressure and impact resistance, ensuring stable long-term operation under high temperature and ultra-high pressure.

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2. Bellows seal structure, zero leakage for higher safety

   Built-in metal bellows seal assembly realizes fully enclosed stem without external leakage, preventing leakage of toxic, harmful and high-temperature media, eco-friendly and safe for harsh working conditions.

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3. Gate type structure, smooth opening and closing

   Rising and falling gate design provides smooth flow passage with low resistance, wear and erosion resistant sealing surfaces, stable and reliable for on-off control of pipelines.

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4. High temperature resistance, long service life

   Bellows and sealing parts adopt high-temperature resistant configuration, suitable for high-temperature steam, thermal oil and other media, with much longer service life than ordinary packed valves.

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5. Compact small-bore design

   Specially designed for small-bore high-pressure pipelines: DN15–DN50 (NPS 1/2″–2″), compact size and flexible installation.

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6. Dual standard compliance for global markets

   Dimensions, connections and pressure ratings meet both GB and ANSI/ASME standards, suitable for domestic and overseas customers.

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7. Full ultra-high pressure range coverage

   ANSI Class 150–Class 2500 and GB PN16–PN420, to meet various ultra-high-pressure system requirements.

Applications

1. High-temperature & high/ultra-high-pressure small-bore pipelines for power stations and boilers
2. Ultra-high-pressure process pipelines with strict sealing requirements in petrochemical and refinery industries
3. Ultra-high-pressure small-bore pipelines for oil and gas wellheads and gathering systems
4. Ultra-high-pressure thermal oil circulation systems
5. Ultra-high-pressure pipeline systems requiring zero medium leakage in chemical and power industries

Product Summary

This bellows type forged steel gate valve is based on integral forged steel structure with core bellows seal design, achieving true zero external leakage, safe, eco-friendly, high temperature and ultra-high pressure resistant.

It covers sizes DN15–DN50 (NPS 1/2″–2″) and pressure ratings ANSI Class 150–2500 & GB PN16–PN420, conforming to global mainstream industrial standards. It is an ideal choice for on-off control of small-bore ultra-high-pressure pipelines with high sealing requirements.