
Carbon Steel 10 Inch 2pcs Trunnion Mounted Ball Valve American Standard
Specifications
Overview
The trunnion ball valve is a form of quarter-turn valve which uses a hollow, perforated and fixed/supported ball to control flow through it.
A trunnion mounted valve means that the ball is constrained by bearings and is only allowed to rotate, the majority of the hydraulic load to be supported by the System constraints, resulting in low bearing pressure and no shaft fatigue. The line pressure drives the upstream seat against the stationary ball so that the line pressure forces the upstream seat onto the ball to cause it to seal.
The mechanical anchoring of the ball absorbs the thrust from the line pressure, preventing excess friction between the ball and seats, so even at full rated working pressure operating torque remains low. This is particularly advantageous when the ball valve is actuated because it reduces the size of the actuator and hence the overall costs of the valve actuation package.
Advantage
Trunnion mounted ball valve is an economical and high-performance quarter-turn valve. The quarter-turn operation is fast and reliable which makes this valve applicable to quick on-off operation and tight seal. This ball valve is widely used in pulp paper refinery, mining, chemical fiber, sewage and water treatment, sugar refining industry.
Body:
Separate body design, various materials are available.
Ball:
The ball is trunnion mounted, which prevent seat damage and reduce seat ware dramatically comparing with floating ball valve.
The ball is precisely machined and mirror finished for bubble-tight shutoff and less operating torque.
Full bore design minimizes the flow resistance and achieve better valve performance.
Seat:
With seats on both sides,the trunnion ball valve can handle flow in either direction with 0 leakage.
Seat is spring preloaded, which ensures self
Application
The trunnion ball valve is a kind of double-block-and-bleed(DDB) valve, while the floating ball valve only seal the downstream side.The trunnion ball valve can block both upstream and downstream media. And when the pressure in the middle cavity is greater than the seat spring force, the seat will be pushed open to release the pressure inside the chamber to ensure safety.
FAQ
Q: Are you trading company or manufacturer ?
A: We are a factory.
Q: How long is your delivery time?
A: According to the order,7~60days.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
Wenzhou Xidelong Valve Co. LTD
Xidelong Brief Introduction
Xidelong is a professional manufacturer in valve automation, integrating with research and development, manufacturing, sales and after-sales services of valve and accessories over 12 years.
The factory of Xidelong valve is located in Longwan (Zhejiang, China), covering an area of 25,000 square meters, of which square meter is for office work whereas 24,000 square meters is for production (including the assembly area, testing area and warehouse area). Moreover, the factory is only 9 miles to Wenzhou Airport, greatly facilitating for the visitor of our international customers and partners.
Boasting of excellent technical strength, design and experience in Gate, Ball, Butterfly and Bellow valves manufacturing, the company has a quality management system as required by ISO9001-2008.
Xidelong Valve have been working to find reliable sales agents or distributors.
Xidelong Manufactory
Established in 2007, Xidelong Valve is a preferred supplier of industrial valves for major Chinese manufacturers.The factory of Xidelong valve is located in longwan (Zhejiang, China).
Xidelong Business
Valve: Ball Valve, Butterfly Valve, Gate Valve, Globe Valve, Check Valve, Sight Glass
Material: ● Steinless Steel: CF8, CF8M, CF3, CF3M, Duplex Stainless Steel
Material: ● Casting Steel: WCB, WC6, WC9, A105, LCB
Accessories: Pneumatic Actuators, Electric Actuators, Worm Gear, Manual Override, Limit Switch, Solenoid Valve
Standard: JB/GB, ANSI/API, JIS, DIN
Xidelong Production
We are equipped with CNC lathes, automatic machining centers, automatic MIG seal welding and automatic hard facing facility to reduce human error. Today equipment and technology along with a qualified training to our employees produce valves as required by international market.
Xidelong Testing
All our production is tested in accordance to the standard required.
We analyze the raw material at first. Any piece is verified in order to respect the required tolerance. Each valve must exceed the pressure test before it has been judged ready for delivery.