different types expansion valves powerpoint

Differences between a thermostatic expansion valve and an ...

In this article we will explain in a simplified way what is the role of the expansion valve iin the refrigeration production cycle. We will also detail the differences between a thermostatic expansion valve and an electronic expansion valve. Firstly, it is important to understand the main principles and operations within the refrigeration production cycle.

Direct Expansion System - Air Conditioning

The valve used is a reversing valve that reverses the refrigerant flow to enable the heat pump to run cooling or heating. A normal valve is used when a cooling only system is needed. This type of system is also known as the vapor compression systems. Here are the refrigeration cycle of a direct expansion system. Expansion(Flow Control)

List of valves - Wikipedia

Basic Types - by function. Valves can be categorized also based on their function Check valve or non-return valve, allows the fluid to pass in one direction only.; Flow control valve, to maintain and control a variable flow rate through the valve; Poppet valve, commonly used in piston engines to regulate the fuel mixture intake and exhaust; Pressure Reducing Valve, to regulate the pressure of ...

Expansion Cards and their Slots on Motherboard - Computing ...

Mar 07, 2017· The expansion cards are the different types of cards or adapters which are used in computer to improve the performance and compatibility of …

How TXV works - Thermostatic expansion valve working ...

Nov 07, 2017· Danfoss Thermostatic Expansion Valves (TE 5, 12, 20, & 55) deliver high quality, reliability, and lifetime value. You can mix and match parts for optimal performance and minimum stock.

4.2 Thermal expansion valves (TEVs) - SWEP

Thermal expansion valves must always operate with a minimal working superheating to achieve stable regulation. The minimum stable signal (MSS) depends on the type of TEV, the characteristics of the evaporator present and the mutual positions of the expansion valve, the evaporator and the bulb.

Pressure Relief Valve Engineering Handbook

a power source of some type, such as electricity or compressed air in order to operate. A pressure relief valve must be capable of operating at all times, espe-cially during a period of power failure when system controls are nonfunctional. The sole source of power for the pressure relief valve…

5.4 Refrigerant types - SWEP

Refrigerants are divided into groups according to their chemical composition. Following the discovery that some of these chemical compounds may be harmful to the environment, they are being replaced with more environmentally friendly alternatives (see Figure 5.2).The process is not easy, and although there are alternatives to old refrigerants, the new ones are usually not flawless.

Types of Industrial Valves - Applications, Advantages, and ...

VALVES Common Types • Check (Non Return) Valves Check valves or non return valves are designed to ensure one way flow only. Usually used in water pipework systems and installed immediately after the pump. The most common check valve is the disc type (horizontal or vertical). When flow is sufficient the disc is pushed out. When

CONTROL VALVE HANDBOOK - Emerson Electric

Control valves are an increasingly vital component of modern manufacturing around the world. Properly selected and maintained control valves increase efficiency, safety, profitability, and ecology. The Control Valve Handbook has been a primary reference since its first in 1965.

Compare Ball, Gate and Butterfly Valves - Lockout Tagout

The Ball Valve – A rotary ball design is the main component of these valves.Quick to respond, these valves are also easy to use and maintain, and are ideal for clean operations. The Butterfly Valve – Designed in the form of a disc or double or triple offset shafts that operate perpendicular to the flow direction, these valves ideally can control flow, but do leave some residual material in ...

Presentation on Expansion Devices - LinkedIn SlideShare

Apr 11, 2017· A float type valve opens or closes depending upon the liquid level. Float type expansion valves :- 17. Low-side float valves:- A low-side float valve maintains a constant liquid level in a flooded evaporator or a float chamber attached to the evaporator.When the load on …

Types of Pressure Relief Valves and Their Recommended ...

Types of Pressure Relief Valves and Their Recommended Applications. A pressure relief valve is a safety device that protects a pressurized vessel or system when the pressure isn't at the right level. This type of valve opens when a pressure level is reached in order to release the pressure, thus preventing damage to the system or other areas.

Expansion Valves - Air Conditioning

Thermostatic Expansion Valve uses a valve mechanism to control the flow of liquid refrigerant into the evaporator coil. The flow is controlled by the pressure in the evaporator. This type of metering device is able to operate well when the load fluctuates and hence is suitable for use in air conditioning system.

The 5 Main Types of Water Heaters Explained in Detail

The 5 Main Types of Water Heaters Explained in Detail If you're in the market for a new water heater, you may not exactly know what you're looking for. Here's a very detailed article explaining the 5 types of water heaters including conventional, tankless, solar, heat pump and condensing types.

Types of Actuators | Bizfluent

An actuator is a mechanism used in the manufacturing of machines and equipment to initiate valves required to stop or start a function. An important part in machines, such as computer-operated machines or audio equipment, actuators can use fluid, air or electric current to …

Electronic Expansion Valves: The Basics

Jul 28, 2004· The electronic expansion valve (EEV) operates with a much more sophisticated design. EEVs control the flow of refrigerant entering a direct expansion evaporator. They do this in response to signals sent to them by an electronic controller.

What is a Metering Device | HVAC Refrigeration Heating Cooling

What is a Metering Device – Specific Types of Metering Devices used in HVAC Refrigeration: Thermostatic Expansion Valve - Also referred to as the TEV or TXV for short. The thermostatic expansion valve is used in many HVAC applications including use in chillers for chilled water systems. More on TXV's below.

Valve Types and Features

Valve Types and Features The three basic functions of valves are: 1. to stop flow, 2. to keep a constant direction of flow, and 3. to regulate the flow rate and pressure. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. Butterfly valve

The Different Types of Cooling Compressors

The Different Types of Cooling Compressors Executive summary There is much confusion in the marketplace about different compressor types and their characteristics. In this paper, each of these compressors is defined, benefits and limita-tions are listed, and practical applications of each are discussed. With this information,

Ice Breaker: How Automatic Expansion Valves Work

The automatic expansion valve (AXV) is similar in construction and appearance to the commonly used thermostatic expansion valve (TXV). However, the metering devices operate much differently. Ice Breaker: How Automatic Expansion Valves Work

Operation and Maintenance of different valve types

R. Arztmann: Operation and maintenance of different valve types _ 4 2.2 COP® Valve design The COP® valve is a poppet valve of special design. The valve guard, poppets, springs and wear shims are conventional. The valve seat on the other hand is made of two pieces. A seat plate covers the seat body. This plate is a wear part.

Different Types Of Valves With PDF File - Engineering ...

5- Thermal expansion valve ... For more information watch this video about types of valves. control valve. A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller. This enables the direct control of flow rate and the consequential control of process quantities such ...

Different Types of Valves used in Piping - A Complete ...

Dec 08, 2012· What is valve? Classification of valves Valve types. Methods of controlling flow through a valve. Basic Parts of the valve. Valve types 3. What is valve? A valve is a device that regulates, directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways.Valve Functions Stopping and starting fluid flow ...

Tech Sheet #ST 107 - Fluid Controls Institute

There are three basic types of thermostatic traps that operate according to the temperature principle: Expansion, Balanced Pressure, and Bi-Metal. • Expansion trap elements have an internal filling that expands and contracts with temperature change to actuate the valve…

Corrosion Types and Prevention - Different Types Of ...

As corrosion most often occurs in aqueous environments, we now explore the different types of degradation a metal can experience in such conditions: Uniform Corrosion Uniform corrosion is considered an even attack across the surface of a material and is the most common type of corrosion.

How thermostatic expansion valves work - The Engineering ...

Nov 11, 2017· How thermostatic expansion valves work In this article we'll be learning how thermostatic expansion valves work. The expansion valve is an essential component in almost every refrigeration cycle and the thermostatic expansion valve is …

Piping and plumbing fitting - Wikipedia

A fitting or adapter is used in pipe systems to connect straight sections of pipe or tube, adapt to different sizes or shapes, and for other purposes such as regulating (or measuring) fluid flow. These fittings are used in plumbing to manipulate the conveyance of water, gas, or liquid waste in domestic or commercial environments, within a system of pipes or tubes.

Types of Valve used in Piping - Learn about 9 Types of ...

May 22, 2018· Learn about 9 Different Types of Valves used in Piping such as Gate Valve, Globe Valve, Check Valve, Plug valve, Ball Valve, Butterfly Valve, Needle Valve, Pinch Valve and Pressure Relief Valve.

The Types of PC Expansion Slots - dummies

ISA: The most ancient type of expansion slot is the ISA, which stands for (get this) Industry Standard Architecture.That's because it never really had a name until another, better type of expansion slot came along. ISA slots hang around to be compatible with older expansion cards.

Types of Pipe Fittings Used in Piping - A Complete Guide

Connect different components such as couplings and stop the flows such as Caps. There are different types of pipe fitting used in piping. Pipe Fittings used in piping work are mainly Elbow, Tee, Reducer, Union, Coupling, Cross, Cap, Swage Nipple, Plug, Bush, Expansion Joint, Adapters, Olet (Weldolet, Sockolet, Elbowlet, Thredolet, Nipolet ...

What is Expansion Strategy? definition and meaning ...

Expansion Strategy Definition: The Expansion Strategy is adopted by an organization when it attempts to achieve a high growth as compared to its past achievements. In other words, when a firm aims to grow considerably by broadening the scope of one of its business operations in the perspective of customer groups, customer functions and technology alternatives, either individually or jointly ...

Thermal expansion valve - Wikipedia

A thermal expansion valve or thermostatic expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator thereby keeping superheat, that is, the difference between the current refrigerant temperature at the evaporator outlet and its saturation temperature at the ...

What is Thermostatic Expansion Valve (TEV) for ...

Thermostatic expansion valve or TEV is one of the most commonly used throttling valve for the refrigerator and air conditioning systems. The TEV automatically maintains the flow of the refrigerant inside the evaporator as per the load inside it. TEV enables safe running of the compressor without flooding and also helps the refrigeration plant run as per the optimum capacity.

Thermostatic Expansion Valves - Parker Hannifin

TYPES OF EXPANSION DEVICES Expansion devices can be divided into four general categories: the fixed area restrictor, the automatic (constant pressure) expansion valve, the thermostatic expansion valve, and the elec-tric expansion valve. The fixed area restrictor expansion device is simply a precisely formed restriction through which liquid

Components — Expansion Devices - Ravti

Sep 09, 2016· The last main expansion device is the electronic expansion valve. There are many types of electronic expansion valves, and each can be calibrated in a variety of ways. They will usually have a temperature sensor at the outlet of the electronic expansion valve and a temperature sensor leaving the evaporator.