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Home > Products > Ball Valve > Floating Ball Valve > Fully Welded Ball Valves
Fully Welded Ball Valves
  • Fully Welded Ball Valves

Fully Welded Ball Valves

    Payment Type: L/C,T/T
    Incoterm: FOB,CFR,CIF,EXW,FCA

Basic Info

Model No.: Q41

Material: Stainless Steel, Carbon Steel, Stainless Steel, Duplex Steel

Connection Form: Welding

Driving Mode: Turbine

Nominal Pressure: PN1.0-32.0MPa

Channel: Straight Through Type

Structure: Floating Ball Valve

Type: Floating Ball Valve

Function: Relief Valve

Temperature: Normal Temperature

Application: Household Usage, Water Industrial Usage, Industrial Usage

Pressure: 150-2500LB

End: RF,BW

Additional Info

Packaging: Standard Export Package

Transportation: Ocean,Air

Place of Origin: Wenzhou

HS Code: 8481804090

Port: Shanghai,Ningbo

Product Description

Fully welded ball valves are used mainly in Gas transmission and distribution pipeline (Mid-stream), typical for underground and buried installation The ball is fixed and the seat rings are floating, free to move along the valve axis.

Side load generated by pressure acting on the ball is absorbed by bearings.

At low pressure the seat sealing acting is achieved by the thrust of the springs acting on the seat. As the pressure increases the fluid pressure pushes the seat rings against the ball, making the sealing more reliable.

Features and Benefits

Upstream Sealing At low pressure, seat-to-ball contact is maintained by Belleville springs. At higher pressures, seat contact is reinforced by line pressure.

Automatic Internal Relief of Body Pressur Relief of excess body cavity pressure is automatic, avoiding dangerous pressure buildup. Any pressure exceeding downstream line pressure by approximately 200 psi pushes the downstream seat away from the ball, allowing the pressure to relieve into the pipeline.

Rotating Seat Rings The exclusive rotating seat feature is standard in the Qilong fully welded Ball Valve sizes 14” (350 mm) and larger. Both seats rotate 15 degrees each time the valve is closed, exposing a new pinch point and evenly

Distributed Seat Wear

The pinch point is the area of the seat insert that experiences an increased velocity when the valve is seated closed and unseated open. This is where the seat seal experiences the most wear, and in most valves, where a leak path begins. By rotating the seat ring, the pinch point wear is distributed throughout the seat seal, providing an increase in seat life.

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Product Categories : Ball Valve > Floating Ball Valve

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