Company Profile
About Bigtork
Founded in 2006, Zhejiang Bigtork Valve Automation Co., Ltd. specializes in the design and manufacture of pneumatic and hydraulic actuators for rotary and linear valve applications. Since 2011, BIGTORK has supported domestic and international oil and gas projects with actuator sizing, engineering customization, manufacturing, testing and technical support.
BIGTORK has signed framework agreements with SINOPEC and CNOOC and has been approved as a qualified supplier of pneumatic actuators. Meanwhile, we are the reliable business partner of foreign world famous brand.
Our Factory
Bigtork® have covered an area of total 20000 square meters, which its workshop for machining, assemble, testing and its warehouse for raw material, semi-finished product and finished product.
BIGTORK LISHUI NEW FACTORY
Our Product
Bigtork® are dedicated in our own brand with excellent quality pneumatic actuator for ball valve, butterfly valve, plug valve & hydraulic actuator for gate valve, global valve, etc rotary and linear valve. Our product range involve pneumatic actuator, hydraulic actuator, linear actuator, rack and pinion actuator, scotch yoke actuator and accessories such as air filter regulator, limit switch box, solenoid valve, valve positioner, air operated valve, quick exhaust valve, speed control valve, etc.
Product Application
Bigtork® offer advanced one-stop industry control automation solutions in the oil and gas, chemical, power, municipal engineering, pharmaceutical, food and beverage, printing and dyeing, paper, water supply and drainage, wastewater, construction and other industries.
Production Equipment
Bigtork® introducing vertical and horizontal CNC machine centers, CNC lathes, and other product machines. We establish our own production testing lab for leakage test, pressure resistance test, gas tightness test, torque test, lifetime test, low temperature test, high temperature test, salt spray test, etc.
Our service
Bigtork® provide prompt respond pre-sales consultative services and technical support; on-sales manufacturing, inspection and on-time delivery; after-sales technical support services for valve actuators, actuator accessories, pneumatic valves and hydraulic valves.
Development History
2006
● Company Founding
● Development of AT Rack&Pinion actuator
2011
● Rapid growth of enterprises
● Capacity and scale Expanding to 5000 units
2014
● Developing linear actuators
2020
● Increase the comprehensive scale and production capacity
● Introducing CNC machining centers, Automated processing,
● Obtaining explosion-proof certification ATEX
2022
● Awarded Chinese High-tech Enterprises
● Establishment of Moscow Branch Bigtork officially entered the CIS market
2024
● BIGTORK signed a framework agreement with CNOOC and became one of its qualified pneumatic actuator suppliers.
2007
● Independently developed by Bigtork
● Pushing out BG Scotch&Yoke cylinder
2012
● Launch new modularity
● Scotch&Yoke cylinder
2017
● Product obtained SIL 3 certification
2021
● Comprehensive brand upgrading strategy;
● Establishment of product laboratory
2023
● Awarded Chinese Star Enterprises
● BIGTORK signed a framework agreement with SINOPEC and became one of its qualified pneumatic actuator suppliers.
2026
● 2026 Successfully Joined ADNOC Supplier Network
R&D Capabilities
Design Standards
◉ Compliant with EN15714.3, IS05211, DIN3337, VDI/VDE3845, NAMUR standard
Operating Medium
◉ Dry clean or inert gas, as well as non-corrosive gas unreacted with actuator parts and lubricants
◉ Dew point temperature: +20°C
◉ Particulate matter: <30μ(<5μwhile using positioner)
Air Source Pressure
◉ 3bar ◉ 4bar ◉ 5bar (Default Value)
◉ 6bar ◉ 10bar
Operating Temperature Ranges
◉ Std:-20 to +80°C (-4 to +176*F)
◉ Low Temp.:-40 to +80°C (-40 to +176°F)
◉ Ultra-low Temp:-60 to +80°C (-76 to +176°F)
◉ High Temp.-20 to +160°C (-4 to +320°F)
Lubricating
◉ Lubricated as standard
◉ Optional lubricants for high and low temperatures available
Control System Applications
1. Modular design, convenient on-site configuration and inventory.
2. Safe design, the spring module is completely closed and safe to use.
3. The processing accuracy is guaranteed. The box body is made of horizontal processing center.
4. Excellent anti-corrosion surface, through hard chrome plated cylinder and piston rod, improve anti-corrosion performance and service life.
5. High efficiency and durability, dynamic transmission and dynamic seal with low friction, self-lubricating design.
6. Rated torque output range: 360Nm to 110000Nm.
7. Wide temperature range: ultra-low temperature (-60°C),low temperature (-40°C) and standard type
(-20°C).
8. Movable operating devices (screw, gear and hydraulic pressure).
1. High rigidity integrated casting shell.
2. Full series of double guide rod design, optimize the lateral load.
3. There are two kinds of fork design: symmetrical and inclined.
4. The size of the base connecting disk complies with ISO 5211 standards, facilitating direct installation.
5.0° and 90° have adjustable travel limit device to avoid overopening valve.
6. Self-lubricating oil-free bearing design, low friction, long life.
1.3 precision grinding process + hard chrome plated cylinder, wear resistance, corrosion resistance and excellent low friction coefficient,mirror level roughness sealing reliable.
2. Sealing ring + wear-resisting ring double guide design, excellent dynamic sealing performance.
3. The piston rod adopts self-lubricating oil-free bearing design, with low friction and long service life.
4. Provide a variety of air source interface sizes.
1. Fully closed welding anti-stay design, ensure the use of safety.
2. The spring is provided by high quality supplier with guaranteed performance.
3. The surface of the spring is coated with corrosion resistant resin.
4. Spring seat full travel guide, smooth operation.
5. Embedded screw manual and hydraulic manual design, reduce product length, easy installation.
Team Introduction
Design guarantee system
With our advanced selection software, you can access actuator sizing calculations, control system configurations, system diagrams, and comprehensive project documentation support..
Execution guarantee system
Bigtork has always focused on the sales, production, R&D and design of pneumatic actuators for industrial process control valves, and has signed long-term ORM cooperation services with foreign automatic control valve companies.
After-sales guarantee system
Bigtork has always focused on the sales, production, R&D and design of pneumatic actuators for industrial process control valves, and has signed long-term ORM cooperation services with foreign automatic control valve companies.
Training guarantee system
The construction and maintenance personnel of the franchise stores can obtain job qualification certificates after undergoing systematic training.
Production
Material Inspection
Certificates
Bigtork® products qualification owned ISO 9001, ISO 14001, ISO 45001, SIL3-TUV, EAC, CE, ATEX-BV, IP68-TUV, Salt Spray Test, DNV ambient & cryogenic type test and etc certifications.
Bigtork® products patents: A scotch&yoke type pneumatic actuator; A pneumatic actuator with stable guidance; A pneumatic actuator with efficient shock absorption function; A universal scotch&yoke type pneumatic actuator; An anti blocking pneumatic valve; A manual pneumatic integrated linear pneumatic actuator, etc.
EAC010-5DEAC010-5D
Competitive Advantages
20+ & 16+ Years Experience
BIGTORK not only focus on manufacturing Rotary & Linear and Pneumatic & Hydraulic valve actuator, but also offering one industry process control solution since founded by Mr zhang in 2006. We have 20+ extended production experience and 16+ extensive globle project undergo.
Strong R&D Ability
Our team involves 6 engineers who owns domestic and oversea project work experience. We supply 100% technical support and problem solution for whole product life. Size selection tool that self owned software is avaivable for every clients.
Strong Supply Capacity
We have 4 complete series production line for valve actuator which expend to annual 60000pcs output. Introducing latest generation CNC machine centers and CNC lathes etc high-precision machining equipment to enhance manufacture speed and product accuracy.
Quality Assurance
All series products strictly controlled with 9 processes by ISO and other system. The business partner of the raw material and components are profession major which supply for world renowned brand. A product warranty was provided with final testing and test report accordance with international product standards.
One Stop Service
Bigtork offer OEM & ODM services according to your requests from pre-sale to after-sale period. Each project has its own sale service tracking records. Each staffs is well trained to master proficient skill and full professional knowledge to support industry flow control one stop solution service.
Brand Effect
Bigtork worked with whole world valve and actuator major several years, and gradually develop its inpendent own brand BIGTORK which had a good reputation in clients. We built a rapid order and delivery processing management to assure your project progress. Futhermore we will genuine in cost accounting to reduce your budget.
Organization
