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About US

Zhejiang Lasen Intelligent Equipment Co., Ltd. ( Used to be known as Hangzhou Lasen Valve Co., Ltd. ), located in Hangzhou Changkou industrial zone, which is on the Bank of Fuchun River. Founded in 2004 with a registered capital of 100 million yuan, the company is a science and technology enterprise integrating R & D, production, sales, and maintenance of control valves. Zhejiang Lasen Intelligent Equipment Co., Ltd. is Pneumatic Globe Valve Manufacturer and Pneumatic Globe Valve Supplier.

Our company is a national high-tech enterprise, a national science and technology-based small and medium-sized enterprise, an industry-university research teaching base of Zhejiang University of Technology, and a teaching base of "engineer training plan". We have passed ISO9001 \ ISO45001 management system certification, special equipment manufacturing license (class A1 certification) issued by the State Administration of market supervision, functional safety certification (safety integrity level reaches SIL2 / SIL3) and EU safety certification "CE", ball valve and butterfly valve products have passed API607 fire protection certification, regulating valve has passed ISO15848 valve low leakage rate certification, In the process of product development, our company continues to introduce international advanced technology and adopts CAD, CAE, CAM, FEA, and finite element analysis and design. At the same time, we have set up a new product R & D center, life test center, high-temperature test center and low-temperature test center, so as to ensure the quality of all our products. We also have a professional team engaged in R&D, manufacturing and management, marketing and finished product inspection of regulating valves for many years.

Zhejiang Lasen Intelligent Equipment Co., Ltd.
  • 2004
    In February 2004, the company was registered and established.
  • 2012
    In June 2012, the company reached a cooperation agreement with BrightonWell in the United States on advanced control valve technology.
  • 2013
    In March 2013, the company cooperated with Zhejiang University of Technology to establish an industry university research teaching base and an excellent engineer training base.

    In July 2013, the company developed high-performance intelligent three eccentric butterfly valves for DN500, Class900LB, and 1500Lb hydrogenation units.
  • 2014
    In January 2014, the company's series of products were officially named (BR.W series).
  • 2016
    In October 2016, the company's products obtained TRCU and CE certifications and were exported overseas.
  • 2017
    In April 2017, the company's products passed the TS A2 level renewal audit of the special equipment production license.
  • 2019
    In May 2019, the company's products passed the API607 fire protection certification.
  • 2020
    In December 2020, the company was awarded the title of "National High tech Enterprise".
  • 2021
    In February 2021, the company completed a new 10000 square meter factory and upgraded its special equipment production license to A1 level.

    In October 2021, the company's products passed the SIL2/3 Functional safety certification.
  • 2022
    In August 2022, the company was awarded the title of "Hangzhou Enterprise High tech Research and Development Center".
  • 2023
    In February 2023, the company's products passed the "Made in Zhejiang" product certification.

    In March 2023, the company's products passed ISO15848 low leakage rate certification.


International system certification, effectively consolidate the competitiveness of the enterprise.

  • TUV ISO15848 Certificate (4
  • TUV ISO15848 Certificate (4
  • TUV ISO15848 Certificate (8
  • API607 Fire Certification(Q41F-CL150 NPS 4)
  • API607 Fire Certification(Q347F-CL150 NPS 8)
  • API607 Fire Certification(Q41F-CL150 NPS 2)
  • API607 Fire Certification(BR.W72 /150LB NPS2)
  • API607 Fire Certification(BR.W73/150LB NPS2)
  • API607 Fire Certification(BR.W8/600LB NPS2)
  • API607 Fire Certification(BR.W72/150LB NPS4)
  • API607 Fire Certification(BR.W73/150LB NPS4)
  • API607 Fire Certification(BR.W8/ 600LB NPS4)

News and Information

Industry Knowledge

What are pressure control valves, and how do they function in industrial systems?

Pressure control valves are essential components in industrial systems designed to regulate and control fluid or gas pressure within pipelines, equipment, and machinery. They ensure that pressure levels remain within predetermined limits, contributing to safe and efficient operations across various industries.
Types of Pressure Control Valves:
Pressure Relief Valves (PRVs): PRVs are designed to protect systems from overpressure conditions by diverting excess fluid or gas to a low-pressure area or back to a reservoir. They are crucial for preventing catastrophic failures in pressure vessels or pipelines.
Pressure Reducing Valves (PRVs): PRVs maintain downstream pressure at a set level by reducing incoming high-pressure fluid or gas to the desired lower pressure. They are commonly used in water distribution systems, gas pipelines, and steam systems.
Pressure Sustaining Valves: These valves ensure that upstream pressure remains constant, even as downstream demand fluctuates. They are often employed in municipal water supply systems to maintain pressure during peak demand.
Back Pressure Regulators: Back pressure regulators control the pressure in a system by maintaining a constant back pressure upstream. They are used in applications like chemical processing and reactor systems.
Pilot-Operated Pressure Control Valves: These valves use a pilot system to regulate the main valve, allowing for precise pressure control. They are versatile and find applications in various industries.

What are the key principles governing the operation of pressure control valves, and how do they play a pivotal role in achieving optimal pressure management in industrial systems?

Principles of Pressure Control Valves:
Pressure control valves are fundamental components in industrial systems, responsible for regulating and maintaining precise pressure levels within pipelines, machinery, and equipment. They operate on a set of principles that ensure efficient pressure management:
Set Point: Pressure control valves are set to maintain a specific pressure level. When the pressure exceeds this set point, the valve takes action to reduce it, and conversely, when the pressure falls below the set point, the valve acts to increase it.
Sensing Mechanism: These valves incorporate sensing mechanisms, such as diaphragms, springs, or electronic sensors, to monitor the system's pressure. This mechanism detects deviations from the set point and triggers the valve's action to restore the desired pressure.
Adjustment: Pressure control valves have an adjustment mechanism that allows operators to fine-tune the set point. This adjustment is crucial for tailoring the valve's performance to the specific requirements of the system.
Actuation: Depending on the type of pressure control valve, actuation mechanisms can vary. Some valves use mechanical force, while others utilize pilot systems, electronic controllers, or pneumatic actuators to make adjustments.
Types and Applications:
Pressure control valves come in various types, each designed to address specific pressure management needs across diverse industrial applications:
Pressure Relief Valves (PRVs): PRVs protect systems from overpressure conditions by diverting excess fluid or gas to a lower-pressure area or back to a reservoir. They are crucial for preventing catastrophic failures in pressure vessels and pipelines.