Hydraulic control valve is a pressure control valve , which consists of a main valve and pilot valve attached to the catheter needle valve ball valve and pressure gauges and other components.

Various types of flow characteristics are available. This tutorial discusses the three main types used in water and steam flow applications: fast opening, linear, and equal percentage flow; how they compare, and how (and why) they should be matched to the application in which they are used.

Valves need to be measured on their capacity to pass fluid. To enable fair comparison, valves are sized on a capacity index or flow coefficient.

Sizing a control valve for a steam application can be a complex matter. This Module attempts to throw light on the subject by using first principles to explain the relationship between flow and pressure drop.

The choice of valve for a particular application depends on various factors such as the fluid flow rate, the process temperatures and pressures, and whether the fluid is corrosive or abrasive.

Choose the right valve size needed. Choosing the right size is critical to the longevity of the pressure reducing valve. Over-sized valves will lead to noise, valve failure and wire draw during low flow conditions. If more than one size of valve meets your required capacity, choose the valve tha

working pressure is also important: -Types of b/f valves: 1. Resilient butterfly valve which has a flexible rubber seat. Working pressure 232 PSI 2. High performance butterfly valve which is usually double eccentric in design. Working pressure up to 725 PSI 3. Tricentric butterfly valve which is u

Top entry ball valve fixed the shortcomings of the spring preload can not be adjusted and controlled, and large compression spring assembly, the assembly difficult. To solve this problem, instead of the spring material selection ANSI 302 304. ANSI 302 spring stiffness, corrosion resistance