Tag: Air Pressure Reducing Valve

Difference between Pressure Relief Valves and Pressure Safety Valves

A pressure relief valve is one that is used to limit the pressure in a system within a specific set level. However, a pressure safety valve actuates automatically to release excessive pressure. Relief valve opens only when the pressure reaches the specific set pressure limit and is usually operated by an operator. It does not require operator assistance to release excessive pressure.

The similarity between the pressure relief valve and the safety valve is that they both are spring-loaded valves. Usually, the valve is forced shut by the spring. When the pressure increases, the force of the spring has overcome that forces the valve to open.

Classification of the Pressure Relief Valves

Pressure Relief Valves are essential for controlling the flow rate of fluid, thereby facilitating the practical use of the system and providing additional safety to pressurized vessels or systems. There are three types of Pressure relief Valves.

  • Safety valves: – A pressure valve that is used with compressible gases, steam, and air services.
  • Relief valve: –  A valve that is used in a hydraulic system as pressure over sill devices. They can further be into adjustable relief valves and safety relief valves. They are usually used in naval ships for generating thermal electricity.
  • Safety Relief valve: – A valve that is used either for liquid or compressible fluids in a pressurized vessel is called a safety relief valve. These are generally used in boilers.

Classification of Safety Relief Valves

  • Conventional(spring-loaded):- The main components of traditional spring-loaded safety relief valve are the nozzle, seat disc, disc holder, bonnet, spring, set pressure adjusting screw, body, and blowdown adjustment ring.
  • Pilot operated:-  The main component of pilot-operated hydraulic valve is inlet from the system, orifice, main spool spring, dart, pilot spring, adjustment screw, pilot drain, the skirt of the spool, and
  • Balanced bellows:-  The essential components of Balanced bellows relief valve are nozzle, body, adjusting ring, disk, seating surface, bellows, balanced piston, bonnet, spring, adjusting screw, stem, and cap.

SKG Pneumatics is the best supplier of industrial valves in Delhi. The company has been into pneumatic industries for several years. The company manufactures different types of relief and safety valves that can be used in the industrial production unit. The pressure safety relief valve can prevent damage to property, life, and environment to a great extent and shall be used in every industry for additional safety. The pressure relief valves can be used in pressurized vessels, boiler, and other pressurized systems.

Types of Valves in Gas and Oil Industry

In a piping system, valves play a very important role. They are the most essential components of the oil and gas industry and are used in various purposes. In upstream, midstream and downstream, valves are used for controlling the flow, protecting the equipment and refining of crude oil respectively. In this post, we shall discuss the types of valves used in the gas and oil industry.

Following are the most common types of valves used in the gas and oil industry:

  1. Control Valves: 

    As it is clear from the name that control valves are used to control the flow Based on the process conditions. A control valve is termed as a final control element in automatic control terminology. There are two main parts of control valve i.e. the sliding stem and the rotary action.

  2. Bellow Seal Valve:   

    Bellow seal valve is a kind of control valve which is used in balancing the pressure of the fluid. For pipelines of steam and flammable, explosive media, bellow seal valve is the perfect solution. By adopting the structure with bellows, it helps in avoiding the leakage of the valve stem. It is very secure and prevents the loss of fluids. It has a very long operating life with minimum operating cost. The structure of bellow seal valve is durable which helps in preventing leakage.

  3. Butterfly Valves:   

    Butterfly valve is used to stop, regulate and start the flow. It has a very vast use in oil and gas industry. It is a quarter- turn rotary motion valve which means that rotating the handle of the valve at 90° can completely close or start it.

  4. Cryogenic Valves:  

    Cryogenic valves are used in very cold applications. Most oil and gas industries use cryogenic temperature range starting at -238° F i.e. -150° . Cryogenic valve has a very keen ability to function in both low (-320° F) as well as high (750 psi) temperature.

  5. Gate Valves: 

    A gate valve is also known as sluice valve and it is mostly used for both above- ground and underground installation. It performs it operation doing a clockwise to close CTC or clockwise to open CTO rotating motion of the stem. Gate valves are also used when minimum pressure loss and a free bore is needed.

  6. Globe Valves:

     Globe valves are used for regulating the flow in the pipeline and for throttling flow control. There is a flow direction arrow marked on the valve body and it must be installed according to it. Pressure classes of globe valve include 150 through 1500.

  7. Pressure Reducing Valves: 

    As the name tells, pressure reducing valves reduce the pressure of a fluid. It controls the downstream pressure or outlet of the fluid. It is an open, 2 ways valve which ensures the pressure of the fluid until the desired pressure is reached downstream.

 

These valves are used in many different appliances, systems, and common items inside the house, industries. Industrial valves are of various types such as Gate Valves, Globe Valves, Ball Valves, Butterfly Valves, Check Valves, Pressure Valves, and Diaphragm Valves, etc. SKG Pneumatics Inc, are leading suppliers of Industrial Valves and Equipment, based in Delhi. They are offering a quality range of industrial valves & all types of fire safety products.

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