轴流式止回阀, 锻钢止回阀

Product Overview

This vertical forged steel check valve adopts an integral forged steel body and vertical structure, which automatically opens and closes by medium pressure to effectively prevent backflow. It is specially designed for small-bore high-temperature and high-pressure working conditions.

It is available in national standard sizes DN15–DN50 (ANSI: NPS 1/2″–2″), with pressure ratings including ANSI Class 150–Class 1500 and GB PN16–PN160. It features a compact structure and reliable sealing, fully compliant with mainstream industrial standards such as GB and ANSI/ASME.

It is widely used in high-pressure pipelines in power stations, petrochemical, oil and gas transportation, boilers and thermal systems, suitable for global markets including Europe, Russia, America and China.

Key Features

1. Integral forged steel body, high strength & high pressure resistance

   Fully forged structure without casting defects, high density and strong pressure-bearing capacity, ensuring stable long-term operation under high temperature and high pressure.

2. Vertical structure for flexible installation

   Suitable for vertical pipeline installation, compact and space-saving, especially ideal for small-bore high-pressure pipelines.

3. Automatic operation to prevent medium backflow

   Automatically opens and closes by medium pressure without manual operation, effectively protecting pumps, compressors and other upstream equipment.

4. Precision sealing, zero leakage

   Disc and seat are precision lapped for tight shut-off, no backflow or leakage, suitable for flammable, explosive, high-temperature and high-pressure media.

5. High temperature & erosion resistance

   Internal structure and sealing parts are designed for high temperature and erosion resistance, suitable for steam, thermal oil, high-pressure gas and other harsh media.

6. Compact small-bore design

   Specially designed for small-bore pipelines: DN15–DN50 (NPS 1/2″–2″), compact size and stable performance.

7. Dual standard compliance for global markets

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

8. Full pressure range coverage

   ANSI Class 150–Class 1500 and GB PN16–PN160, to meet various high-pressure system requirements.

Product Summary

This vertical forged steel check valve is specially designed for small-bore high-pressure applications, covering sizes DN15–DN50 (NPS 1/2″–2″) and pressure ratings ANSI Class 150–1500 & GB PN16–PN160. It conforms to both GB and ANSI/ASME standards to meet global customer needs.

With an integral forged steel structure and vertical compact design, it provides automatic operation, tight sealing, high temperature & high pressure resistance, erosion resistance and flexible installation. Stable performance and easy maintenance make it an ideal choice for backflow prevention in vertically installed small-bore high-pressure pipelines.