Tag: Pressure Relief Valves

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.

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

 

 

Types of Pipe valve

A valve is a device that can control the flow and pressure of the fluid in a pipe. A few either starts or altogether stops the flow of fluid whereas there are some that partially obscures the path.

The different types of pipe valves are explained below in detail.

Ball Valves

Ball valves operate with a quarter-rotary motion. In a ball valve, the flow path is manipulated by the ball-shaped disk which requires a 90-degree turn of the valve handle. It is comparatively smaller in size and lighter than a gate valve.

Butterfly Valves

Butterfly valve can start, stop, and regulate the flow path but only to some extent. It is a simple valve that can be operated by a 90-degree turn of the valve handle. A butterfly valve is not normally designed to give a positive shut-off but modern technology has provided room for improvement in its blueprint. This valve is now capable of a bubble-tight shut-off.

Check Valves

Check valves, or NRVs (non-return valves), supports the unidirectional flow of fluid only. Their function is to check backflow. In check valves, backflow is prevented by “stoppers”. The different kinds of “stoppers” are ball, piston, and swing. Ball and piston check valves work by demanding a little amount of inbound flow pressure. The movement of fluid in a swing check valve is through a pivoting flap which opens only in one direction and ensures that there is no backflow.  

Gate Valves

Gate valves are the most ordinary and the most frequently sold valve type in the industrial valve trade. These act as a block valve for isolating pipe systems since their properties are limited to either opening or closing. There is no restriction in the flow path once a gate valve is opened as it opens all the way. Gate valves are preferred in a straight-line system that requires minimum obstruction. You can regulate a gate valve with the help of a hand-wheel or a piston actuator.

Pressure Reducing Valves

If you are looking for a device to reduce the water pressure, pressure reducing valve is your answer. These valves get down to work by bringing down the quantity of water that flows through a pipe. With the valve, water that was pushing through the pipes at high pressure will be efficiently slowed down.

 

You must surely recognize the valve that you’ve been looking for all this time. Get one from leading suppliers of industrial valves in Delhi as SKG Pneumatics Inc at the earliest, for best prices!

Classifications of Valves According to Functions and Motions

When you are installing a piping system in your building or industry, here is some information provided by SKG Pneumatics that will help you to get the services accordingly. SKG is a one-stop for all types of industrial piping devices with a rugged quality.

Classification of valves according to functions

1. For isolation to the piping system – Gate Valves, Ball Valves, Plug Valve, Butterfly Valve, Diaphragm Valve etc are included.

2. For regulation – Globe valve, Butterfly Valve, Needle Valve, Ball Valve etc are included to provide regulation in the flow of the fluid in the piping system.

3. Safety Relief – Pressure Relief Valves, Vacuum Relief Valves are included.

4. Non Return – Swing check valve, lift check valve are included.

Special purpose valves-multi port valve, float valves, foot valves, knife gate valve, knife gate valve are included for special types of works mostly done in a household or small piping system done for any buildings.

Classification of valves according to motion

1. Linear motion valves – These are the valves that have a stem sliding closure part like slat, plate or disc, or diaphragm which raise or lower the closure part by moving the handle or grip to the device. This comes with easy design, easy maintenance, versatility in sizes, pressure classes etc. These valves are slower in operation but are more accurate in shutting or opening the flow. SKG provides you with a series of valves functioning under motion like Gate, Globe, and Diaphragm valves etc

2. Rotary motion valves – Rotary valves include a closure part that rotates in the body and opens or shuts the flow when a lever attached is made to quarter turn. They come with larger pore size, cost-effective but limited in applications with pressure drops. SKG caters you all type of valves that comes with a rotary motion like Ball Valves, Butterfly Valves, and Plug Valves etc.

The SKG Pneumatics is catering the products that are needed by any type of piping system. They are incorporated in 2005 and have various partners that also cater the devices like an Advance valve, Zoloto valves, NVR Valves, Easyflex Valves and New age Fire fighting equipment. In this new age, firefighting equipment includes Flexible drops, RRL Hose, Sprinklers, Branch Pipe, Hose Reel Drum and Hose Pipe etc.  More of it SKG also deals in Rubber Bellows, that are designed to reduce the noise, vibration and absorb any thermal movements. These Rubber Bellows are vital to install in a piping system.