
Stainless Steel Trunnion Ball Valve Full Bore 2pc Ball Valve Gas Pipeline
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 ball design is the lower operating torque, ease of operation, minimized seat wear (Stem/ball isolation prevents side loading and wear of downstream seats improving performance and service life), superior sealing performance at both high and low pressure (a separate spring mechanism and upstream line pressure is used as the sealing against the stationary ball for low pressure and high pressure m applications).
The trunnion is available for all sizes and for all pressure classes but they are not suitable for throttling purposes.
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.
Why choose Xidelong?
Specializing:
We are specializing in manufacturing Ball Valve , Butterfly Valve ,
Gate Valve , Globe Valve , Check Valve , Sight Glass , Valve
Accessories ......
Advantage:
1.Price: As we are the professional manufacture in valves and
accessories, we ensure that the price offered must be very
competitive compare with others.
2. Raw material inspection: All material test high quality, and
keep in warehouse.
3. Workers: All workers training 3 months, skilled workers on
production line.
Sample Order:
We will charge express fee only for old customers in generally, and
for new customers we will charge 50% of the units cost and express
fee mostly. (It can be discussed, we keep options always.)
Delivery Time:
We usually take 20days for official orders after received the
prepayment, And Sample orders will be ready within 7days.
Quality Control:
We got very strict and complete quality system to ensure that each
product will meet quality requirements as per clients, incoming
quality control, final quality control, out-going quality control.
Meanwhile, all of the products will be strictly inspected before
delivery.”’ Quality First, Service First’’ that we are pursuing All
the time.
Warranty Period:
18 months from the date we signed the contract or PI. Technical
support for the whole life.
(In case of goods discrepancy to the order and drawings, the
customers issues Reclamation Report concerning defective goods and
attaches photo documents. customers shall consider either to make
an additional delivery for replacement of defective goods, all
expenses are covered by our company. Or the customers shall decide
that we should compensate expenses for defective goods. Such
compensation will cover all transport costs, custom duty costs,
amount of paid goods.)
Payment Terms And Conditions:
1. TT Terms: The payment will be 30% of prepayment by direct bank
remittance (T/T),remaining 70% before Shipment or the copy of BL
send by us Via Fax or Email.
2. L/C Terms: Payment by L/C at sight and Unrestricted. (L/C must
allow 30days minimum from the shipment date of presentation of
documents for negotiation, all the clauses within L/C must be
clear, concise and acceptable. Do not allow special clauses, terms
and conditions.)
Competitive Price:
We provide competitive price, good quality and best service to
reach the win-win goal.
Customization:
custom-made is acceptable.
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.