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HC41X Stainless Steel Flanged Silent Lift Check Valve

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HC41X Stainless Steel Flanged Silent Lift Check Valve

The HC41X Silencing Check Valve is specifically designed for applications—such as pump outlets and water supply and drainage risers—that demand stringent standards regarding noise reduction, water hammer prevention, and sealing performance. Its valve disc features a soft rubber sealing surface, ensuring flexible contact with the valve seat during closure; this eliminates the harsh metallic impact typically associated with valve shut-off, thereby keeping closing noise levels below 40 decibels.

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Nominal diameter Length Connection dimensions (standard values) Flange standard: Ministry of Chemical Industry 20592
1.0MPa 1.6MPa 2.5MPa
mm L D D1 n-d D D1 n-d D D1 n-d
40 97 150 110 4-18 150 110 4-18 150 110 4-18
50 100 165 125 4-18 165 125 4-18 165 125 4-18
65 121 185 145 8-18 185 145 8-18 185 145 8-18
80 146 200 160 8-18 200 160 8-18 200 160 8-18
100 161 220 180 8-18 220 180 8-18 235 190 8-22
125 181 250 240 8-18 250 240 8-18 270 220 8-26
150 202 285 240 8-22 285 240 8-22 300 250 8-26
200 233 340 295 12-22 340 295 12-22 360 310 12-22
250 252 395 350 12-22 405 355 12-26 425 370 12-30
300 305 445 400 12-22 460 410 12-26 485 430 16-30
350 351 505 460 16-22 520 470 16-26 555 490 16-33
400 407 565 515 16-26 580 525 16-30 620 550 16-36
450 433 615 565 20-26 640 585 20-30 670 600 20-36
500 450 670 620 20-26 715 650 20-33 730 660 20-36

The dimensions above are for reference only.


Zhongchi Valve Group Co., Ltd. was established in April 2008. The company is a valve manufacturing enterprise that integrates design, development, production, and sales. It is located in the Binhai Industrial Park of Wenzhou Economic and Technological Development Zone.
The company adheres to the corporate tenet of "quality-oriented, innovation-driven, management-efficient, and service-focused", and upholds the business philosophy of "service-oriented and integrity-abiding". We provide customers with reliable quality assurance through advanced technology and scientific management, offers services with a complete range of products and a short delivery time, and strives to achieve the corporate goal of "building an excellent enterprise and creating a brand in the industry". The company has successively obtained ISO9001 international quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification, special equipment manufacturing production license TS certification, CE certification, EAC certification, API607 fire protection certification, and has been recognized as a small and medium-sized technology enterprise in Zhejiang Province and a national high-tech enterprise.
The company's main products include ball valves, gate valves, globe valves, check valves, filters, butterfly valves, etc. These products are widely used in various industries such as petroleum, chemical, natural gas, light industry, electric power, pharmaceuticals, dyes, metallurgy, fiber, leather making, textile, food, military, construction engineering, refrigeration, water supply, and more.
About Us
Zhongchi Valve Group Co., Ltd.
Zhongchi Valve Group Co., Ltd. was established in April 2008. The company is a valve manufacturing enterprise that integrates design, development, production, and sales. It is located in the Binhai Industrial Park of Wenzhou Economic and Technological Development Zone.
The company adheres to the corporate tenet of "quality-oriented, innovation-driven, management-efficient, and service-focused", and upholds the business philosophy of "service-oriented and integrity-abiding". We provide customers with reliable quality assurance through advanced technology and scientific management, offers services with a complete range of products and a short delivery time, and strives to achieve the corporate goal of "building an excellent enterprise and creating a brand in the industry". The company has successively obtained ISO9001 international quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification, special equipment manufacturing production license TS certification, CE certification, EAC certification, API607 fire protection certification, and has been recognized as a small and medium-sized technology enterprise in Zhejiang Province and a national high-tech enterprise.
The company's main products include ball valves, gate valves, globe valves, check valves, filters, butterfly valves, etc. These products are widely used in various industries such as petroleum, chemical, natural gas, light industry, electric power, pharmaceuticals, dyes, metallurgy, fiber, leather making, textile, food, military, construction engineering, refrigeration, water supply, and more.
Certificate Of Honor
  • Occupational Health and Safety Management System Certification
  • Environmental Management System Certification
  • Quality Management System Certification
  • API 607 certification
  • CE marking
  • EAC certification
  • TS certificate
  • Certificate for Technology-Based Small and Medium-Sized Enterprises
  • Ball Valve Type Test Certificate
  • Type Test Certificate for Gate Valves
  • Type Test Certificate for Globe Valves
  • Certificate of Type Testing for Check Valves
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