High Pressure Quick Opening Blind Plate | DN50-DN600 Pipeline Blind for Medium & Small Bore High Pressure Applications
Model: DN50-DN600
Min. Order: 1 Unit
- Nominal Diameter:
- DN50–DN600
- Nominal Pressure:
- PN1–PN40
- Design Temperature:
- -20℃ ~ +245℃
- Applicable Medium:
- Gas, liquid, etc.
Product Features & Applications
The high pressure quick opening blind plate is designed for medium and small-bore high-pressure pipeline plugging operations. It allows one operator to loosen the valve body and move the blind plate into place via actuator, completing the operation in 3-5 minutes. Optional manual, electric or pneumatic actuators are available for safer and more efficient operation. Suitable for gas and liquid media, it meets GB/T9119-2010 standards, ideal for refining, chemical, cement industries and more.
Product Overview

The high pressure quick opening blind plate is a specialized pipeline fitting for medium and small-bore high-pressure pipeline plugging operations. It features a compact structure and high-pressure sealing design, enabling one operator to complete the blind plate insertion/removal within 3-5 minutes. With optional manual, electric or pneumatic actuators, it offers enhanced safety and efficiency, making it ideal for frequent maintenance and isolation tasks in high-pressure process pipelines.Core Structure & Components

- Left/Right Blind Body: Forms the main sealing structure with the sliding blind plate, ensuring reliable sealing under high pressure.
- Sliding Blind Plate: The core component for pipeline isolation and opening, moving horizontally via the screw pair.
- Support Shaft: Provides stable support for the blind plate and ensures smooth sliding movement.
- Handwheel/Screw Pair: Transmits torque to loosen the valve body and adjust the blind plate position.
- Actuator (Optional): Electric or pneumatic actuator can be equipped to realize automatic operation, improving safety and efficiency.
Key Advantages

- High Pressure Adaptability: Covers PN1-PN40, suitable for high-pressure pipeline systems.
- Quick Operation: Completes plugging in 3-5 minutes, significantly reducing downtime for medium and small-bore pipelines.
- Reliable Sealing: Adopts high-performance sealing materials and structure, ensuring zero leakage under high pressure.
- Flexible Drive: Supports manual, electric and pneumatic actuation to meet different site requirements.
- Safe & Efficient: Replaces manual operation, reducing labor intensity and operational risks in high-pressure environments.
- Compact Structure: Small size, easy to install and maintain, suitable for limited space.
Application Industries

- Refining Industry: Ethylene furnaces, coke removal lines, steam pipelines, separator isolation, flare gas lines, etc.
- Chemical Industry: Reactor blowdown ports, chemical cleaning isolation devices, regenerated gas pipelines, transfer pipelines, mixed medium pipelines, etc.
- Cement Industry: Finished product pipelines, oil depot tanks, petrochemical storage tanks, natural gas storage tanks, loading/unloading stations, etc.
Why Choose This High Pressure Quick Opening Blind Plate?

- Efficient Maintenance: Minimizes medium and small-bore high-pressure pipeline downtime and improves production efficiency.
- High Pressure Sealing: Reliable sealing performance under PN40 pressure, ensuring safe operation.
- Flexible Drive Options: Meets different operation requirements with manual, electric and pneumatic actuators.
- Safe Operation: Reduces manual operation risks in hazardous high-pressure environments.
- Compliant: Meets national and international standards, ensuring compatibility and reliability.
- Long Service Life: High-quality materials and robust design extend the product’s service life under harsh high-pressure conditions.





Technical Specifications
- Nominal Diameter
- DN50–DN600
- Nominal Pressure
- PN1–PN40
- Design Temperature
- -20℃ ~ +245℃
- Applicable Medium
- Gas, liquid, etc.
- Body Material
- Carbon steel, stainless steel, special materials (duplex steel, titanium alloy, etc.)
- Blind Plate Material
- Carbon steel, stainless steel, special materials (duplex steel, titanium alloy, etc.)
- Sealing Material
- Rubber, silicone rubber, fluorine rubber, etc.
- Drive Mode
- Manual, electric, pneumatic
- Flange Standard
- GB/T9119-2010 PN10
Trade Specifications
- Minimum Order Quantity
- 1 Unit
Shandong Weiheng Valve Technology Co., Ltd.
Shandong Weiheng Valve Technology Co., LTD., founded in 2006. is a company special izingin high-end valve research and development and manufacturingAt the beginning of itsestablishment, Weiheng people took "science and technology innovation quality Weiheng" asthe development concept, and Tieling Valve Research Institute, China University of PetroleumSuzhou University of Technology and major design institutes have worked closely to digestand absorb a number of domestic and foreign technologies, and obtained 16 national patents.including inventionsPatents 1, maleic anhydr ide special bl ind valve patents 3. Main productsquick switching bl ind plate, chemical special butterfly valve. To "European and American,domestic Import substitution "as a development goal. The company has won the nationalhigh-tech enterprises, Shandong innovative small and medium-sized enterprises, Zibo CitycontractKeep the reputation of the unit and Zibo City excellent integrity enterprise, andsuccessfully Iisted in Qilu equity (equity code: 306125).
- Location
- Industrial Park, Dongshen Village, Fenghuang Town, Linzi District, Zibo City, Shandong Province
- Main Products
- Valve, Pipe Fitting, High-pressure Bolt
- Employees
- 51-100 People
- Factory Area
- 1,000-5,000 m²
- Annual Revenue
- US$1 Million - US$5 Million
- Main Markets
- North America / Europe / Southeast Asia / Middle East & North Africa
