Regulating valves: types, parameters, purpose

The regulating Valve is a broad list of functional structures designed for the distribution and overlap of the working fluids, the regulation of parameters of individual processes. In particular, the change in the parameters of pressure, temperature, pressure, amount of consumed substances is carried out by modifying the flow rate of the roaming environments. Mounted control valves in piping systems, tanks and units that require the distribution of, or disable or used transporternyh environments.

Basic types of valves

1. Reinforcement of the regulatory – the main purpose aimed at regulating the preset parameters of working environments. Includes all sorts of by-pass valves, balancing and reducing nature.
2. Valves – used for covering the threads when you move environments. Among the most common types of valves include: butterfly valves for shutoff of liquids, ball valves, gate valves wedge-shaped, valves.

Elements control valves

Reinforcement of the regulatory functions on the basis of the following elements:

• Control valves;
• Mixing valves;
• Control valves;
• Pressure regulators of direct action.

Purpose

Control valves is used to support the required set of values of certain technological processes due to regulation of consumption of specific environments.

According to the design, reinforcement of the regulatory character virtually indistinguishable from the gate. In some systems, the same control valves can be used for its intended purpose and as a shut-off.

Varieties of control valves

1. Vodorazdelnaya – used when it is necessary to divide working environments that are in different States.
2. Condensing – used to eliminate condensate, a restricted crossing or overlapping flow of superheated steam.
3. Protective valves – aimed at the automatic protection of pipelines and equipment from unexpected or unacceptable changes in the functioning of the pipeline system.
4. Control – designed to control the flow of operating environments in measuring and control equipment.
5. Mixing and distribution – distributes separate streams of work environments in different areas either directly involved, if necessary mixing them.
6. Throttling – apply, if necessary, reducing the pressure of the environments in systems that operate under conditions of considerable sudden changes in pressure.
7. Lockable non - reverse valve in forced open, restriction or closure of turn.

Features

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Because in most cases the level of reliability and durability of the reinforcement depends on the efficiency, high stability of the whole pipeline system, the most important point is her choice. Here you should pay attention to the following points:

1. To Get the adjustable valve on the basis of defining operating conditions: nature of fluid, temperature, pressure in the system.
2. The choice of control valves is consistent with the characteristics of conventional diameter passage.
3. Before you lean toward the purchase of rebar, it is necessary to clarify its method of control: remote, manual, on the basis of an electric, hydraulic or pneumatic actuator.
4. Initially, you should determine the material body cast iron, corrosion-resistant steel, bronze, etc.
5. Purchased the fittings depending on the purpose of individual elements: adjustable or safety valve, valve, gate valve.
6. Important are the geometrical parameters that characterize the regulating valve: length, height, flange types, sizes and number of bolts, and the like.
7. You Must verify that the characteristics and parameters of the selected valve to the specified requirements and conditions of functioning of the pipeline system.