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Double Disc Gate Valves
The so called double disc valve incorporates a double disc, double wedge and double seat system, which makes this design unique, being designed to assure a reliable operation under the most severe service conditions.
The two independent trunnion mounted discs which permit each disc to rotate a few degrees during closing. This rotating feature allows the discs to seat in a different position on each closing stroke which provides even wear and prevents small imperfections from growing into major leaks.
Design: ASME B16.34, API 600, BS 1414
TECHNICAL ADVANTAGES OF THE DOUBLE DISC WEDGE ASSEMBLY
Parallel Slide Gate Valves
An alternative to double disc valves, having two discs but only one wedge instead of two. The discs are in permanent contact with the seat rings, getting a tight seal due to the horizontal inconel spring located in between and without the wedging system help.
Design: ASME B16.34, API 600, BS 1414
PARALLEL SLIDE DESIGN MAIN FEATURES
1.Two discs and just one wedge design gate valve.
2.Parallel slide gate valve provides a smooth flow path between seats.
3.This design of gate valve is commonly used for clean fluids and steam applications.
4.System pressure is used to provide isolation. The closing is only made over one of the seats. The higher pressure in the system, the better closing tightness.
5.The discs have a certain movement to assure its right alignment with the seats contact faces when closing (seal is established on outlet seat face only), avoiding any mechanical stress.
6.The inconel spring located between both discs, provides initial seating force. Once the discs are in the right position, no additional torque is necessary to achieve a positive seal.
7.Torque requirement is lower than other gate valves as wedge type because needs lower operative forces.
8.The wiping action of the discs over seats while the valve is operating removes debris and prevents premature wear of the components. A long life service is guaranteed by means of hardening seats and discs with an extra hard material as Stellite 6, Tribaloy or others.
9.Parallel slide system avoids jamming related to cooling down of the pipeline.
10.A wide range of construction materials, actuation systems and accessories are available for each case.
We are a professional Double Gate Disc Gate Valve manufacturers in China. We can provide the best Double Gate Disc Gate Valve for sales and competitive price. If you are looking Single Double Gate Disc Gate Valve supplier, we are a good choice. Contact us to buy Double Gate Disc Gate Valve
Why choose us?
- We offer a wide range of Gate Valve products to meet the diverse needs of our clients.
- We are adhering to the philosophy of 'attracting customers with the best products and excellent service'.
- Our high-quality Gate Valve products are backed by comprehensive warranties and after-sales services.
- The company is united, insisting that quality is life, and is determined to provide consumers with high-quality products.
- We take pride in our ability to provide exceptional customer service and support.
- We take the promotion of the development of the domestic Double Gate Disc Gate Valve industry as our responsibility and strive towards the goal of being a leader in Double Gate Disc Gate Valve industry.
- Our commitment to quality ensures that our Gate Valve products perform consistently and reliably.
- We are good at discovering our company's advantages, bringing our relative advantages into play in different regions, times and environments, and thinking that our relative disadvantages can be used for our advantage.
- Our Gate Valve products are manufactured using only the highest quality materials, ensuring exceptional reliability and longevity.
- We advocate a fair and just management philosophy and the spirit of unity in the village to provide employees with competitive salaries and broad development space.
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