Alma Kelley Valves April 14th, 2019 - 12:17:03
If the sealability is not good or the strength is not intensive, the parts may be destroyed. Thus, it will result in the economic loss in different degree, such as transporting the poisonous, explosive or corrosive fluid. And even it will lead to the serious accident. In order to ensure the sealing and strength of the valve, the manufacture should not only obey the related standards to design and produce the product but also should properly select the material.
The sometimes highly specialized working environments in which manual operated sleeve valves must perform can include differing temperatures ranging from -60°F to 300°F. The sleeves themselves can be manufactured from natural rubber or a compounded elastomer, which provide specific operational capabilities. Control sleeve valves are recognized for their excellent abrasion resistance and ability to process animal and vegetable fats.
The second type is a product with override control to stop flow regardless of flow direction or pressure. It can not only close in response to backflow or insufficient forward pressure, but also can be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.
The formula for the theoretical length of tubing, TL, needed to lower a set number of half steps, x, for an instrument of length, L, is TL = L (16/15) ^ x. Example: 100" instrument lowering 3 half steps: TL = 100(16/15)^3. TL = 21.36.
Swagelok Valves, as with all Swagelok products, are thoroughly tested, and the customer is assured that they will perform reliably, meet expectations of quality and are backed by the Swagelok Limited Lifetime guarantee. Valves are devices which are designed to open, close, or partially obstruct passageways in pipers, and in this way they regulate the flow of fluids and gasses. Valves have application over many different areas of many industries - this means they come in numerous designs and materials depending on the specifications they must meet. For this reason Swagelok produces top of the range Process, Instrumentation and Sanitary Valves, in a range of materials and end connections. Where necessary, Swagelok can manufacture or configure Valves to the special needs of a client's system requirements.
Ever since the 60's, people have been using titanium to create titanium valves for various cars. Titanium is the metal of choice for the creation of spy planes that soar in high-altitudes, as well as nuclear submarines. This is also why the metal has been used for engine valves.