Valve Concepts Design Guide

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Frequently Asked Questions

• Why are valve concepts the leader in tank storage?

  Valve Concepts is the leader in tank storage with its pilot-operated technology in both blanketing Valves and relief vents, allowing for tighter control of vapor spaces, fewer emissions and less product loss. This protects both the environment as well as the tanks themselves while maintaining the quality of the stored product.

• How does valve concepts, inc.get quality?

  Valve Concepts, Inc. Get Consistent Quality By involving every employee in our ISO 9001:2008 Quality Assurance Program, you can count on the quality we provide you.

• What are the basic functions of a valve?

  Valve Functions and Basic Parts Summary. There are four basic types of flow control elements employed in Valve design. 1. Move a disc, or plug into or against an orifice (for example, globe or needle type Valve). 2. Slide a flat, cylindrical, or spherical surface across an orifice (for example, gate and plug Valves).

• How big are valve concepts back pressure regulators?

  Select Control Valves & Regulators FOR SPECIALIZED OR UTILITY SERVICE We manufacture a broad line of throttling rotary and linear control Valves, pressure reducing regulators, and back pressure regulators in line sizes from 1⁄4 inch to 10 inches and Cv ranges from .002 to 4,406.

• What are the basic parts of a valve?

  There are many Valve designs and types that satisfy one or more of the functions identified above. A multitude of Valve types and designs safely accommodate a wide variety of industrial applications. Regardless of type, all Valves have the following basic parts: the body, bonnet, trim (internal elements), actuator, and packing.

• How is the performance of a control valve determined?

  A Valve’s performance is determined by the disk and seat interface and the relation of the disk position to the seat. Because of the trim, basic motions and flow control are possible. In rotational motion trim designs, the disk slides closely past the seat to produce a change in flow opening.

• Which is the best shape for a valve?

  Although a sphere or a cylinder would theoretically be the most economical shape to resist fluid pressure when a Valve is open, there are many other considerations. For example, many Valves require a partition across the Valve body to support the seat opening, which is the throttling orifice.

• What kind of material is used to pack a valve?

  Packing is commonly a fibrous material (such as flax) or another compound (such as teflon) that forms a seal between the internal parts of a Valve and the outside where the stem extends through the body. Valve packing must be properly compressed to prevent fluid loss and damage to the Valve’s stem.