Why Are Ball Valves Divided Into Floating Ball Valves And Fixed Ball Valves

Why do ball valves distinguish between floating ball valves and fixed ball valves, because they have their own advantages and applicable occasions?

1. The floating ball valve is suitable for medium and low pressure, and the diameter is small; the fixed ball valve can withstand up to 2500LB, and the size can reach 60 inches.

2. The fixed ball valve can realize the function of double resistance and double row, while the floating ball valve is mostly a one-way seal. The fixed ball valve can block the medium at both ends of the upstream and downstream at the same time. When the pressure in the cavity of the valve body is greater than the tightening force of the valve seat spring, the valve seat will be pushed open to release the pressure in the cavity, and the packaging is safe.

3. Fixed ball valves usually have a longer life than floating ball valves.

4. The torque of the fixed ball valve is smaller than that of the floating ball valve, so the operation is more labor-saving.

5. The fixed ball valve above 4 inches is equipped with a valve seat grease injection valve, but the floating ball valve does not.

6. The sealing performance of the fixed ball valve is more reliable: the PTFE single material sealing ring is embedded in the stainless steel valve seat, and the tail end of the metal valve seat is provided with a spring to ensure the sufficient pre-tightening force of the sealing ring. The valve continues to ensure good sealing performance under the action of the spring.

7. The fixed ball of the same specification is generally more expensive than the floating ball.

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