Ball Valve Catalog

Ball Valve

Conval Camseal® Ball Valves are designed for the world’s most demanding high-pressure, high-temperature applications.

Ball Valve

Standard Sizes

Ball Valve Sizes through 4″

Pressure Rating

ASME Class through 4500#

Standard Forging ASME Materials

SA 105, SA 182-F22, SA 182-F91, SA 182-F92, SA 182-F316 Other materials available upon request

Standard Casting ASME Materials

SA-216 Gr. WCB, SA-217 Gr. WC9, SA-217 Gr. C12A, SA-351 Gr. CF8M
Other materials available upon request


SW, BW and FNPT Ends


Actuators – Electric, Pneumatic or Hydraulic Limitswitch – Single or double Locking Devices – open, closed, or both Position Indicator Stem Shroud

Design Features

Camseal® Ball Valve Provides Zero Leakage

  • Zero Body Leakage:
    The body/bonnet joint is not subject to pipeline stresses. There is no in-line body bolting to loosen and fatigue, so the body remains leak-free.  
  • Zero Seat Leakage:
    All Conval ball valves are capable of meeting zero bubbles for four minutes at 50 psi and 1,000 psi Nitrogen at final factory seat test; after field in-line welding; following post-weld heat treat; during and after process thermal excursions. Modular internals isolate critical seal surfaces from thermal effects.  
  • Zero Stem Seal Leakage:
    Conval’s exclusive Integral Gland Wrench concentrically loads the stem packing without tools, eliminating stem leaks and extending packing life. Live loading is available as an option.  
  • Robust Stem-Ball Engagement:
    Reliable, accurate ball alignment is achieved due to the robust engagement between the one-piece stem and the ball.  

Superior Bearing Support

Superior bearing support of the blowout-proof stem ensures proper axial alignment and Zero Seat Leakage even on actuated valves. We are unique in that a bearing supports the stem above and below the packing. This greatly extends the life of the packing.

Proprietary Chrome Carbide Coating System

Conval’s highly-engineered Chrome Carbide coating system has superior bond strength and coating density to provide long-life and leak-free performance even in high temperature-drop applications.

Integral Mounting Pad

An ISO-5211 integral mounting pad facilitates error-free, air, motor and gear operator actuation due to superior rigidity, precise alignment and a fully-guided stem bearing system. Lockout capability is standard.

Single-piece Gland

In extreme environments, the simpler the design and the fewer the parts, the better. The durable single-piece stainless steel gland contributes to the longevity of the valve.

Axial-Loaded Packing System

The Axial design ensures tight concentricity, which eliminates side loading of the packing and minimizes wear forces on the trim components. This feature is critical for superior ball valve performance.

Rapid In-Line Renewability

The CAMSEAL® Ball Valve is much easier to renew than anything else on the market. The CAMSEAL® Ball Valve line provides a modular solution to rising maintenance expenses. Low acquisition cost is not as important as low cost over the serviceable life of a valve. Maintaining a Conval valve is far easier and much less costly than replacing a competitor’s valve.

Camseal® Ball Valve Design and Testing

Sophisticated state of the art techniques are used for applying hard coatings, grinding and lapping the ball and seat of the Camseal®. The extremely high density of the coating and the precise lapping techniques produce a ball-to-seat seal that is bubble tight, and will remain bubble tight during and after installation.

The Camseal® seat and the ends of the valve are separate components. In practice, this isolates the seat from the end of the valve during installation. Unlike valves in which the seat is an integral part of the valve end, this configuration isolates the seat from damaging heat of welding. This results in a ball valve that remains bubble-tight after it is welded in line and subsequently post weld heat treated.

The Camseal® ball valve has been subjected to rigorous computer-aided analysis, laboratory testing and field testing during its development. State of the art 3-D computer modeling was used to optimize the design details of the valve. Extensive laboratory testing was conducted to verify these results. Prototypes were subjected to severe thermal testing with repeated thermal cycles between ambient and 1200 degrees F. Pressure testing was done with repeated pressure cycles between atmospheric pressure and varying pressures; tests were performed with both gas and liquid. Steam blow-down testing was performed with a 2,000 psi pressure drop. Various mechanical tests were run. The valve has consistently passed a very rigorous program of tests.