The 60 Series ball valve is very reliable for general purpose uses, in particular with piping, steam and other thermal uses. It has a working pressure of up to 3000 psi and works for a temperature range of -65 to 450 degrees Fahrenheit.
Under high pressure, the ball in the 60 Series is forced downstream, flexing the downstream seat and creating a seal. The upstream seat also flexes with the ball, maintaing a seal.
- The seat design and support ring compensate for seat wear and pressure and temperature changes.
- The support ring contains the seat and protects against premature wear and deformation.
- The coned-disc spring provides a spring-load to the seat, sealing the seat regardless of pressure changes, reducing seat wear from pressure surges.
- The live-loaded chevron packing design supports the axial load radially, reducing the operating torque of the valve. This also compensates for stem wear and creates a tight seal of the stem and bonnet.
- By comparison, conventional packing designs require higher force for the packing to work, so the axial load is transmitted with higher force and uneven distribution. It creates unnecessary wear on the stem, lowers the cycle life and requires higher actuation torque.
- As pressure forces the seat downstream, the seat spring compresses, which reduces the force on the ball.
- This reduces wear and lengthens the cycle life.
- By comparison, in conventional valve seats, the only support on the inside is the ball. Seat failure can occur because the segment of the seat exposed to the ball orifice is entirely unsupported on the inside. The lack of support allows pressure to deform the seat into the opening of the ball.
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