Category: 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.

Pressure Reducing Valves in Hydraulic system

Valves are considered to be the essential components in the hydraulic system. A valve that maintains lower pressures in the hydraulic system is called a pressure-reducing valve. Valves are considered to be the crucial components in the hydraulic system. A valve that maintains lower pressures in the hydraulic system is called a pressure-reducing valve. It determines the upstream main system pressures. A pressure-reducing valve is an open, two-way valve that allows system pressure fluid to flow it until a set pressure is achieved downstream. Pressure reducing valves then shifts to throttle flow into the branch. SKG Pneumatics is the best pneumatic company that is the largest suppliers of industrial valves in Delhi.

Basic components of Pressure reducing valves

The main components of pressure reducing valves include Adjusting screw, Adjusting spring, Diaphragm, Inlet port, Valve Disk, Valve stem and Outlet port.

Difference between pressure safety valve and pressure relief valve

Sometimes people confuse with similar terms pressure safety valves and pressure relief valves. Even though pressure safety valve or pressure relief valve sounds identical but they are different altogether. The difference is that pressure safety valves have a manual lever to activate the valve in case of emergency. However, most Pressure relief valves are spring operated.

Hydraulic pressure control using Pressure release valve

The pressure at which the valve begins to open is called crackling pressure of the valve. However, the pressure at which the relief valve is completely open is full flow pressure. The difference between the crackling pressure and flow pressure is called pressure override.

There is always a risk to life, property and environment while using a hydraulic system. That is why the safety relief valve is required to protect the hydraulic system against overpressure so that the system does not fail.

Classification of the safety relief valve

A type of valve which opens and closes through valve disc due to increase and decrease of pressure, thereby controlling the discharge is called safety valve. They are classified into

  • Low Lift Safety Relief Valve
  • Full Lift Safety Relief Valve
  • Full Bore Safety Relief Valve

SKG Pneumatics is the leading pressure control valve suppliers in India. The company manufactures different types of valves that are used for several purposes. It is also the largest suppliers of industrial valves in Delhi. The company has been manufacturing valves of various types for decades. The company has its office in New Delhi, but it supplies valves in all states of India.