Trunnion Ball Valves
For pipeline use and general processes
Unlike floating-ball designs that allow the ball to move with line-flow conditions, a trunnion design with coil spring-loaded seats prevents particulate matter from getting between the seat and ball contact area, eliminating premature seat leakage, increasing cycle life, reducing down time and lost production.
Block and bleed
Pressure self-relief
Fire safe design
Through conduit (optional)
Full bore sizes from 1" to 30" (25mm to 750mm), Reduced bore sizes from 3" to 36" (80mm to 900mm)
Liangjing Group was founded in 1985. As a key enterprise of Chinese valve industry field, we are leading the way in Chinese valve industry. We are specialized in producing high-medium pressure valves of " LION " brand.
Our main products are:
Gate Valve Ball Valve Butterfly Valve Valve Casting Globe Valve Plug Valve Power Station Valve Valve Gear Check Valve Diaphragm Valve
Valve Forging Valve Pneumatic
Our products totally are covering 15 classes and over 2, 000 kinds and sizes, of which the pressure class is 150-2500LB or 1.0-36MPa and the nominal diameter DN10-2000. Our products are designed, manufactured and inspected in according with API, ANSI, ISO, JIS, DIN BS and GB standards. The drive patterns include manual operation, electrical operation, pneumatic operation, hydraulic operation, hydro-pneumatic operation and computer-controlled operation.
There are 358 employees in our company, including 58 technicians. Our workshops and office buildings cover an area of 40, 000 square meter, including a building area 28, 000 square meter. The capital assets are worth 6, 050, 000 USD and we are well equipped with 213 PCS of machinery, including 18 sets of precision numerical control metal cutting equipments. Our company has a complete testing and inspection equipments and system. In additional our company has a precision casting factory and a sand casting factory made valve casting with an annual output of 4, 000 tons.
Our company has passed the ISO9001 authentication for its quality assurance system, and obtained the API Certificate from American Petroleum Institute.
Our Company is dediated to providing quality products and services to our customers, to maintain this standard the company strictly adheres to a Quality Program in accordance with ISO 9001. To support the quality program Liangjing Group has extensive manufacturing test procedures including: Ultrasonic, X-ray, magnetic particle inspection and photoelasticity and fire safe tests, strain gage testing. Liangjing Group is a member of API and is complies to all major international standards including:
API 600 API 6D ANSI B16.34 JIS BS DIN ASME
Quqlity is the foundation of Liangjing, every aspect of our activity is based on operated within strictly defined procedures, and this philosophy prevails through every department within the company. We sincerely wish ti supply more and better high products for both the foreign and domestic market.
