Torisphere refers to the combination of torus (rounded tube) and a sphere.  A torispherical tank is also referred to as a dish-end tank.  Torispherical tanks are a commonly shaped container for pressure tanks that store liquids and gasses. The body of the tanks are cylindrical, but the ends are torispherical.  The industrial use of torispherical head tanks include:

• autoclaves
• propane tanks
• LNG tanks

Torispheric-head or Dished End Calculators

• Capacity of a Dished End Tank: Computes the volume of a cylindrical tank with torispherical heads based on the length and diameter of the tank and the crown radius and knuckle radius of the torispherical heads.
• Torispherical Head Volume: Computes the volume and diameter of an torispherical head (dish-head) based on the crown radius, knuckle radius and the height.
• Torispherical Head Volume and Height: computes the volume of an torispherical head based on the crown radius, knuckle radius and the Diameter. It also computes the head height. 
• Volume of a Torispherical Head Cylindrical Tank: Computes the volume of a cylindrical tank with torispherical heads (dish end) based on the length and diameter of the tank and the crown radius and knuckle radius of the torispherical heads.
• Mass of the Contents of Torispherical Head Tank: Computes the weight / mass of the contents of tank with torispherical heads based on the volume and density of the contents.