Rego relief valve

Types of REGO Relief Valves

A relief valve is a significant component of any machinery or engine. The proper functioning of the whole machine depends on the relief valve. To sum up the main jobs of a relief valve, it lets the gas exit when it gets very hot. It averts any possible hazards from happening. REGOs relief valves well illustrate these functions.

• Direct acting valves: When the spring force is equal to the weight of the gas force, the gas is sealed. However, when the force of the gas is bigger than the spring force, the gas is allowed to pass through the valve. The gas passes through the valve and reliefs the excess gas. The gas then returns back under the control of the spring. This is the basic working principle of a direct acting valve. This is why the direct acting valve is often used in low or medium pressure situations.
• Pilot-operated relief valves: Unlike the direct relief valve, a pilot-operated relief valve does not directly relieve the pressure. Instead, it uses a small valve to control or let the pressure pass through. The small valve or the pilot valve is controlled by a piston. This valve can handle high pressure in the system. It operates smoothly and reliably. This is the reason why pilot-operated valves are used in high pressure areas.
• Balanced relief valve: This kind of relief valve is used when there is resistance of pressure built downstream. Another time the balanced valve is used is when a constant pressure is to be maintained inside the system. The valve acts in response to the changes of pressure of the system keeping a constant pressure in the system. This is the main working of the balanced relief valve.

Others include bellows seal and blow-off relief valves. The bellows seal relief valve allows flexibility and movement of the gas inside the valve to prevent excessive pressure. In blow-off valves, the gas is released from the system by the electric current allowing the gas to exit through the valve.

Specifications and Maintenance of Rego Relief Valves

Values controlled by gas relief valves are typically high-pressure settings. Some common valve pressure settings are as follows:

• Low Pressure

  Low-pressure valves typically handle pressures between 0-1.5 bar. Functions include managing pipeline flow and preventing gas from exiting relief valves.

• Regular Pressure

  Normal operating pressure is between 1-6 bar. Normal pressure REGO relief valves are commonly used in gas pipelines and gas storage facilities.

• High Pressure

  High-pressure REGO gas relief valves handle high-pressure settings between 6 to 25 bar. They are commonly used in gas transmission systems, compressors, and high-pressure vessels.

Functionality and durability of the gas relief valve can be harmed if the valve is subjected to temperature extremes. It's important to note that the low to normal pressure REGO relief valves work optimally within the temperature range of -20 degrees to +65 degrees. High-pressure valves work optimally between -20 degrees and +90 degrees.

Operating gas flow rates and valve sizes are interconnected. Generally speaking, the gas flow rate is up to 100 cubic meters per hour for valve sizes of 1 inch. Higher valve sizes of 2.5 inches and more typically have a gas flow rate of 1500 cubic meters per hour or more.

The maintenance program for the relief valve is important for both performance and safety reasons. Consider supplier's guidance before maintenance and repairs.

Some general maintenance tips are:

• Routine examination of the gas relief valve should include parts secured and any signs of leakage or corrosion. The valve appears to be functioning appropriately without any unusual noises. Early detection of issues can prevent costly failures and ensure the system's reliability.
• If there is any suspicion that the valve has stuck, gently tap the actuator/button rather than applying any force that may damage the valve. Adopting this practice will prevent damage to the valve's body.

If testing reveals any issues with the REGO gas relief valve, follow manufacturer's guidelines or consult a professional technician or expert. Any repairs carried out should be documented, including any valve replacements and the date and name of the person carrying out the repairs.

Records are helpful when it comes to future maintenance or system upgrades. Using documentation of this kind, system service history can be reviewed, and any required advisories can be provided.

Professional service is generally required for the following:

• Any adjustments to the valve's set pressure should only be done by trained professionals with the manufacturer's permission.
• Repair or replacement of any components of the relief valve should be done by qualified technicians.

Scenarios of Rego Relief Valves

Following are some scenarios where the use of the relief valve is a must.

• Storage Vessel:

  A gas storage vessel may have a supply line whose pressure is above the set pressure of the valve. In this case, the storage vessel will need a gas relief valve to protect itself from the pressure provided by the supply line.

• Compressors:

  In the case of gas venturi compressors, a Rego relief valve is used directly on the outlet of the compressor to protect it from overpressure caused by downstream blockages or inadvertent malfunctions. Placing the relief valve as close as possible to the potential source of overpressure is a primary goal of compressor design.

• Cryogenic Transfer Lines:

  Transfer lines carrying cryogenic fluids are typically insulated to minimize evaporation. However, unintentional blockage can occur, leading to a build-up of pressure within the insulated line. In such a case, a Rego relief valve may be employed at the line's end to avoid a build-up of pressure within the line. The valve would then allow a safe escape of the fluid to the ambient environment, thereby avoiding any risk.

• Gas Meters:

  Gas meters are used to measure the flow of gas through pipelines at different points in a distribution system. As gas pressure may vary significantly throughout the system, gas relief valves may be installed along the pipeline to ensure that the gas meter is not exposed to pressure higher than the value it can resist.

How to choose Rego relief valves

When shopping for relief gas valves, there are several things end-users should consider to get quality, durable, and performance-oriented valves. First, they should think about the right pressure setting. This is the operating pressure of the gas supply system or equipment in which the valve will be fitted. Users should match it with the setting of the relief valve. Also, they should consider the type of relief valve they need for their application. This includes the function it should perform, the medium it should handle, and the specific pressure control requirements.

Housing material is an important factor to consider. Users should choose relief valve materials compatible with the gas they handle. They should also consider factors such as the environment in which the valve will be installed and the temperature of the gas. Sizing of the relief valve is also important and users should ensure that the valve selected has the appropriate flow capacity. This is enough to prevent overpressure conditions in the system. When selecting these valves, users should also ensure they choose those with the appropriate level of tightness.

In most cases, the effectiveness of a relief valve is determined by its ability to seal properly under normal operating conditions. This means preventing any gas from leaking. Furthermore, users should consider relief valves with resilient seats. Such types easily seal and provide long-lasting performance. Users should also consider the maintenance requirements of the relief valve they are choosing. Some relief valves require more frequent maintenance than others. Ultimately, this may result in additional costs for the user. More importantly, the selection should be done based on the manufacturer's recommendations for the maintenance and servicing of the relief valve in question.

R—Q® of Rego relief valves

Q: What tasks do relief valves perform?

A: Pressure relief valves preserve the integrity of pipelines and containers by diverting gas or liquid back to the source when a specific pressure threshold is reached. This action prevents potential explosions, leakages, or system failures caused by overpressure.

Q: What does the REGO valve number mean?

A: REGO valve numbers correspond to specific models or types of valves. The use of numbers facilitates easy identification, communication, and documentation of different valve designs, ensuring that customers can efficiently order the appropriate relief valve to meet their needs.

Q: Are REGO relief valves manufactured in the USA?

A: Yes, REGO relief valves are manufactured in the USA. Their commitment to quality engineering, straightforward design, and dependable performance has established them as a market leader and a popular choice among users worldwide.

Q: Do relief valves require maintenance?

A: Rego relief valves don't require regular maintenance but should be inspected periodically to ensure their proper functioning. The relief valves may be cleaned with a damp cloth, but harsh chemical cleaning substances should be avoided to prevent damaging the spring or valve seat.