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BR.W84 Series eccentric rotary valves

BR.W84 Series eccentric rotary valves

Purpose and features:

The BR.W84 series pneumatic eccentric rotary control valve (also known as cam deflection valve) adopts Masoneilan technology combined with the characteristics of China, and combines the advantages of single seat valves, ball valves, butterfly valves, etc. It has outstanding advantages such as simple structure, small volume, light weight, large rated flow coefficient, large adjustable range, wide temperature range, small leakage, and good stability. Due to the fact that the plug and stem only rotate, the friction force they experience during operation is very small. When the plug and seat are in contact and closed, the plug deflection arm generates small elastic deformation and elastic tightening force under the thrust of the executing structure, making the contact between the plug and valve seat more tight and firm. Therefore, the leakage of the eccentric valve is very small. The actuator thrust required to close the valve is smaller than that of ball valves and butterfly valves. Therefore, this series of products is widely used in automatic control systems for industrial processes such as chemical, metallurgical, and power plants.

  • BR.W84 Series eccentric rotary valves
  • BR.W84 Series eccentric rotary valves
  • BR.W84 Series eccentric rotary valves
  • BR.W84 Series eccentric rotary valves


Eccentric rotary valve

Body size

25~250 mm(1"~10")

Body ratings


ANSI Class 150,300,600


Equal percentage, linear

Rangeability R

Equal percentage  100:1

Linear  50:1


(RF、MFM)  Flanged(RF、MFM)


Flange standard



ANSI B16.5

Body & Bonnet Material




Flexible Graphite

Seat leakage

metal seal: Ⅳ,Ⅴ

Soft seal:Ⅵ

Painting color

 As required

Stainless steel body have no paint



We mainly produce high-grade butterfly valves, self-operated regulating valves, pneumatic (electric) regulating valves, pneumatic (electric) shut-off valves and special valves (such as zirconium, two-way steel, all kinds of Ti, Hastelloy, etc.).

  • 1.How long can i get the feedback after we sent the inquiry? 

    We will reply to you within 12 hours of the working day.
  • 2.Are you a direct manufacturer or trading company?

    We are a factory, and we also have our own international trade department. we produce and sell all by ourselves.
  • 3.What products can you offer?

    We specialize in the production of various types of pneumatic and electric control valves, and undertake control devices, on-site maintenance, and other business. At present, the company mainly produces high-grade butterfly valves, self operated control valves, pneumatic (electric) control valves, pneumatic (electric) shut-off valves, and special valves (such as zirconium materials, bidirectional steel, various types of Ti, Hastelloy alloys, etc.)
  • 4.What applications do your products relate to?

    Our products have been widely used in various industries such as petrochemical, chemical, coal chemical, metallurgy, power, air separation, LNG, etc.
  • 5.Can you do customized products?

    Yes, our main focus is on customizing products. We develop and produce products based on the needs provided by customers.
  • 6.How about the capacity of your company?

    Our independently produced product categories include control valves, butterfly valves, ball valves, gate valves, and pressure reducing valves. Annual production capacity of 20000 sets of regulating valves.
  • 7.How many employees of your company? What about the technicists?

    We now have more than 170 employees, including 10 engineers and 30 technicians.
  • 8.How to guarantee the quality of your goods?

    Firstly, we will do the inspection after every process. For the finished products, we will do an inspection according to the customers’ requirements and the international standard. Secondly, we have the advanced and complete top testing equipment in the industry: spectral analyzers, metallographic microscopes, universal tensile testing machines, hydraulic valve test benches, cryogenic testing equipment, high-temperature testing devices, impact testing machines, ultrasonic flaw detectors, Rockwell hardness testers, ultrasonic thickness testers, etc. The above equipment can fully ensure the provision of high-precision final castings to customers, while also meeting customers' comprehensive testing requirements for material physical and chemical properties, non-destructive testing, high-precision geometric dimension testing, and other aspects.
  • 9.What’s the payment term?

    When we quote for you, we will confirm with you the way of transaction, fob,cif, pdf, etc. For mass-production goods, you need to pay a 30% deposit before producing a 70% balance against a copy of documents. the most common way is by t/t. l/c is also acceptable.
  • 10.How to deliver the goods to us?

    Usually, we ship by sea and have stable international logistics partners, making sea exports very convenient. of course,if your goods are very urgent,the Xiaoshan International Airport and shanghai International airport are also very nearby.
  • 11.Where are your products mainly exported to?

    Our products are mainly exported to more than ten countries, including the United States, Germany, Japan, Spain, Italy, the United Kingdom, Southeast Asia, Russia, etc.

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 Wholesale BR.W84 Series eccentric rotary valves Company and BR.W84 Series eccentric rotary valves Manufacturers.

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)

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