|No566 Binhai 3rd road yongxing subdistrict longwan dist wenzhou zhejiang china
Payment & Shipping Terms:
|Trunnion Ball Valve
Stainless Steel Trunnion Ball Valve,
Gas Pipeline Trunnion Ball Valve,
2pc Full Bore Ball Valve
Stainless Steel Trunnion Ball Valve Full Bore 2pc Ball Valve Gas Pipeline
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.
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.
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?
We are specializing in manufacturing Ball Valve , Butterfly Valve , Gate Valve , Globe Valve , Check Valve , Sight Glass , Valve Accessories ......
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.
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.)
We usually take 20days for official orders after received the prepayment, And Sample orders will be ready within 7days.
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.
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.)
We provide competitive price, good quality and best service to reach the win-win goal.
custom-made is acceptable.
Contact Person: Li