Tag: Valve

Applications and Working process of Control Valve


A valve is a device that regulates the fluid flow as well as the pressure within a system or process. Unlike on-off valves, a control valve is used to regulate the fluid flow by stopping and starting the fluid flow as per the direction is given by the controller.

Control Valve

Control valves consist of three main parts: the valve, the actuator, and the controller. Various components of the Actuator include rain cap, eye bolt, diaphragm, spring, actuator stem, diaphragm case, scale plate, stem connector, and yoke.

The components of body part include packing flange, packing follower, yoke claim nut, gland packing, valve stem, bonnet, stud bolt and nut, gasket, guide ring, guide bushing, valve plug, seat ring, valve body, trim set, and positioner.

Though the primary purpose of a control valve is to regulate the fluid flow, there are two main forms of action i.e. the sliding stem and the rotary action. The most common type of control valves in the sliding stem include globe valve, angle body valve, and angle seat piston valve while the rotary action includes a butterfly valve and ball valve.

Why Control Valves are Used?

Control valves are used for various purposes in the industrial, engineering, manufacturing, and scientific communities. The primary purpose of a control valve is to regulate the rate of the fluid flow by varying the size of the flow passage. Control valves are most commonly used for consequential control of process quantities including pressure, temperature, and the liquid level.

How do Control Valves work?

With the help of opening and closing internal passages, control valves regulate the fluid flow. Control valves form a control loop which is then used by a controller to send signals. Control valves respond to these signals and adjust the internal openings accordingly.

Control valves use the actuator to move the valve stem. Usually, it is either air (pneumatically) or electrically driven. The pressure between the inlet and outlet decides the rate of flow through the valve.

In order to reduce the fluid flow, the valve is closed, which results in more back-pressure and increases the difference between the inlet and outlet pressures.

Control valves help in controlling the fluid flow and are used in various industries including pipeline, oil & gas, food & beverage, the biopharma industry, and marine industry.

SKG PNEUMATICS INC is the top industrial valve suppliers and they are also the leading control valve suppliers in India. All their products are tested for resilient durability to provide the best industrial valve to their customers.

Different Types Of Hydraulic Valves

Hydraulic valves direct any type of flow of liquid medium through a hydraulic system and control the flowing fluid. There are different systems utilized in hydraulic to enable this to happen. Valves can be precisely worked (by handle, handle or cam), electric solenoid-worked, or pilot-worked (air or water powered weight incites the valve). A few valves utilize the weight of the circuit’s liquid to activate themselves, as with alleviation valves. Valves can likewise be incited with links, switches, plungers, torque engines, etc. There are many industrial valves supplier in the market which provides different types of valve for various purpose in which the most common valve the use water valve. Here some other valves which we supply to our clients.

Hydraulic Pressure Reducing Valve

Hydraulic pressure valve exerts its pressure by the hydraulic fluid in all the direction and exerts the force per unit area. Thus hydraulic pressure is used in various hydraulic systems like jaws of life, metal shears, automobile brakes, car crusher etc.

Butterfly Valve

A valve comprising of a pivoting round plate or a couple of pivoted half-circle plates appended to a transverse shaft and mounted inside a pipe so as to manage or forestall stream. Butterfly valves work comparatively to ball valves. Pivoting (rotating) the handle, either physically or with a pneumatic framework, turns the plate opposite or parallel to the stream of the liquid.

Hydraulic and Pneumatic Valve

A solenoid valve is an electrically enacted valve, regularly used to control the stream or heading of air or fluid in liquid power frameworks. Solenoid valves are utilized in both hydraulic pressure and pneumatic pressure power system, and regularly in either poppet or spool arrangements.

Check Valve

A check valve, non-return valve, reflux valve, maintenance valve or single direction valve is a valve that ordinarily permits liquid (fluid or gas) to course through it in just a single bearing.

Globe valve

It has a unique relation to ball valve, is a sort of valve utilized for controlling stream in a pipeline, comprising of a portable plate type component and a stationary ring seat in a for the most part round body. These globe valves are generally used in the petroleum industry.

Ball valve

A ball valve is a type of quarter-turn valve which utilizes an empty, punctured and rotating ball to control move through it. It is open when the ball’s gap is in accordance with the stream and shut when it is turned 90-degrees by the valve handle. The handle lies level in arrangement with the stream when open, and is opposite to it when shut, making for simple visual affirmation of the valve’s status.

Ball valves are solid, performing great after numerous cycles, and dependable, shutting safely even after extensive stretches of neglect. These characteristics settle on them a brilliant decision for shut off and control applications, where they are frequently linked to doors and globe valves, yet they come up short on their fine control in throttling application. India’s leading supplier – SKG PNEUMATICS INC  is a one-stop destination for a complete range of industrial equipment, customized to the requirements of various industries.

Pressure Reducing Valves – Applications & Installation

Pressure Reducing Valves or more commonly Water Pressure Reducing valves lower the pressure of in rushing water/ steam/fluid to a manageable and predetermined level usually at a constant level to make it safer. Utilized in residential, commercial, institutional, and industrial installations the downstream pressure is ensured through a pressure adjustment valve setting. The modern models also incorporate an external sensor for the same purpose. Similarly, the Pressure Independent Control Valve (PICV) includes a tiny diaphragm type DPCV to ensure a constant differential pressure across the opening such that a constant flow rate is maintained.

Pressure reducing valves are categorized into two types — direct acting and pilot operated. These employ globe or angle style bodies. Direct-acting valves have gained more popularity as they comprise globe-type bodies with a spring-loaded, and a heat-resistant diaphragm linked to the outlet valve that connects a spring. The spring, on the other hand, presets tension on the valve seat that is a pressure-equalizing mechanism in order to gain precise water pressure control. 

SKG PNEUMATICS INC is India’s leading suppliers, distributors and the top-notch, one-stop destination for a complete range of industrial products, customized to the requirements of various industries. Each product is a result of extensive testing and engineering excellence for trustworthy durability and resilience-ensured through multiple stringent quality controls. SKG PNEUMATICS partner with the best in the industry to bring best in class products including all valves like Ball valves, Air Pressure Reducing Valve, pressure regulator valve et al at great value due to its durability.  

 

INSTALLATION STEPS FOR PRESSURE REDUCING VALVES  

  1. Determine first the inlet water pressure. Attain it BY ATTACHING  A PRESSURE GAUGE TO HOSE SILL Cock. Ideal house water pressure should be measured at around 50 PSI.
  2. In case pressure exceeds excessively, install the pressure-reducing valve.
  3. Using threaded pipe and fittings, attach a pressure gauge, an initial step to the pressure-reducing valve at each side.
  4. Place the pressure-reducing valve assembly against water pipe to draw the mark for cutting the pipe.
  5. After Shut off the water mains, drain water from the piping system.
  6. Employ a tubing cutter for removing a water pipe section, from the marks made in Step 4.
  7. Remove from valve assembly both the pressure gauges and rubber O-rings.
  8. Brush flux the valve assembly ends onto the ends of the water pipe.
  9. Solder valve assembly to the water pipe as part of the piping system that is made of copper.
  10. Reinstall the pressure gauges and O-rings, after assembly cools.
  11. After turning on the water take a reading of the pressure gauge placed on the outlet side of the valve.
  12. In case water pressure is above 50 PSI (too high), the adjusting screw on the valve should be turned counterclockwise.
  13. On the other hand in case the water pressure is less than 50 PSI ( too low )  the adjusting screw on the valve should be turned clockwise.

 

The same installation can follow all similar steps including pressure control valve, water prv.

In hydraulics, a pressure reducing valve serves the same purpose as a pressure regulator valve in a compressed air system and will lessen the pressure in one branch but enable full system pressure operations at other branches. Installed directly after the water meter in homes, commercial buildings, and industrial plants, a ( water) pressure reducing valve automatically reduces the pressure to a lower, more utilizable pressure from the main supply.

SOME OF ITS APPLICATIONS ARE:-

  • Protecting electric hot water storage heaters and household appliances
  • Building and domestic installations
  • Collective installations
  • Industrial installations