Directly buried long rod ball valve introduction
Q61F/H/Y extension rod buried all-welded ball valve is a new generation of high performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety and harsh environment are specially considered in design. For a variety of corrosive and non-corrosive media. Compared with the floating ball valve, when working, the force generated by the fluid pressure on the ball before the valve is transmitted to the bearing, and the ball is not moved to the valve seat, so the valve seat does not withstand excessive pressure, so the ball valve is fixed. Low torque, small seat deformation, stable sealing performance and long service life, suitable for high pressure and large diameter applications. An advanced spring pre-valve assembly with self-tightening for upstream sealing. Each valve has two seats that seal in each direction, so the installation has no flow restriction and is bidirectional. This valve is generally installed horizontally.
Q61F/H/Y extension rod buried all-welded ball valve has two-piece and three-piece valve body structure, the middle flange is bolted, and the seal is made of reinforced PTFE embedded in the stainless steel ring. The spring is provided to ensure that the valve seat is close to the ball and keeps the seal. The upper and lower valve stems are all equipped with PTFE bearings to reduce friction and save labor. The bottom of the small shaft is provided with adjusting pieces to ensure the position of the ball and the sealing ring. Full bore: The valve flow orifice is the same as the inner diameter of the line for the pipeline to be cleaned.
Direct buried extended rod ball valve performance advantages
1. Low effort: The ball is supported by the upper and lower bearings to reduce friction and eliminate excessive torque caused by the huge sealing load formed by the inlet pressure pushing the ball and the sealing seat.
2, the sealing performance is reliable: PTFE single material sealing ring is embedded in the stainless steel valve seat, the metal valve seat is provided with a spring at the end of the valve seat to ensure sufficient pre-tightening force of the sealing ring. When the sealing surface is worn during the use of the valve, under the action of the spring The valve continues to guarantee good sealing performance.
3, fireproof structure: in order to prevent the occurrence of sudden heat or fire, the PTFE seal ring burned, a large leakage occurred, and promoted the fire, a fire seal ring was set between the ball and the valve seat, when the seal ring burned, Under the action of the spring force, the seat ring is quickly pushed onto the ball to form a metal-to-metal seal, which has a certain degree of sealing effect. The fire test conforms to the APl6FA and APl607 standards.
4. Automatic pressure relief function: When the pressure of the medium in the valve cavity is abnormally increased and exceeds the pre-force of the spring, the valve seat retreats out of the sphere to achieve the effect of automatic pressure relief.
5. Drainage pipe: The drain body is provided with drain holes on the upper and lower sides of the valve body to check whether the valve seat leaks. In the work, when the valve is fully open or fully closed, the pressure in the middle cavity is removed, the filler can be directly replaced; the middle cavity can be discharged. Retentate, reducing the contamination of the valve by the medium.
Direct buried long rod ball valve features
1. Double blocking and discharging function: The fixed ball valve adopts a spring preloading floating valve seat. When the valve is in the fully open or fully closed state, the valve seat on the upstream and downstream sides blocks the fluid, and the retentate in the valve body is discharged through the discharge valve. .
2. Automatic pressure relief function: When the valve body cavity stays in the medium temperature and causes abnormal pressure rise, it does not need to pass the safety valve, but the valve seat function can automatically release pressure, which ensures the safety of the valve when conveying liquid medium. Sex is very important.
3, fire safety structure: the valve has fire safety function, its design, manufacture are in accordance with API 607 and API 6FA specifications.
Product performance parameters
Nominal pressure or pressure level: PN1.0-32.0MPa, ANSI CLASS 150-900, JIS10-20K
Nominal diameter or caliber: DN6～900, NPS 1/4～36
Connection method: flange, butt welding, thread, socket welding, etc.
Applicable temperature: -196 ° C ~ 540 ° C
Drive mode: manual, worm gear drive, pneumatic, electric, hydraulic, gas-liquid linkage, electro-hydraulic linkage
Body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L)
Main shape and connection size