A pressure relief valve is an incredibly useful and necessary mechanism found in a variety of applications. The purpose of these valves is to protect the integrity of a system if the pressure reaches an alarming level. These typically work by opening up to allow the pressure to release outside of the system.

20131028 — A mixing valve isn't designed simply to provide comfort; it serves as a safety mechanism that will keep you from accidental scalding due to high temperatures.

They are classified into three distinct categories based on the amount of lift during the pop-up function. Low-lift safety valves have a small capacity and the valve lifts 1/24th of the bore diameter. High-lift safety valves travel 1/12th of the bore diameter. Finally, full-lift safety valves lift at least 1/4th of the bore diameter and are most applicable for steam services.

We hope this guide from Fluid Controls has helped you to better understand the types of relief valves available and thereby choose the one most appropriate for your system. We offer relief valves, pressure regulators and many other valve types for maximum efficiency in your application.

The JRGUMAT thermostatic mixing valve is also used as a thermal switch, for example in heat exchangers and hygiene storage tanks with different water temperature ranges.

Valves

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·The JRGUMAT can protect against scalding where set to do so. The high control accuracy also ensures safety in production processes with defined temperature specifications.

For advice, please contact your local technical customer services team or representative. We will be happy to advise you on the correct application and installation specifications.

Solenoidvalve

The JRGUMAT thermostatic mixing valve is an open architecture, proportionally regulating three-way mixer made of gunmetal. The blended water temperature is transferred to the thermostat. This compares the temperature with the set point. If the blended water temperature does not match the set point, the volume in the thermostat changes. This causes the valve slide to move across the pin so that more cold or hot water can flow in as required, until the blended water temperature matches the set point.

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We also stock a wide range of flow control and measurement components and gauges and sensors. If you’d like to speak to a qualified expert about the types of relief valves at Fluid Controls, don’t hesitate to contact us today at Sales@FluidControls.co.uk.

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In a similar manner to power-actuated valves, temperature-actuated valves are controlled solely through external temperature or the pressure that is applied on the inlet side.

When water is heated using solar energy, pellet stoves or log heaters for example, high temperatures can occur in the hot water tank. The JRGUMAT thermostatic mixing valve regulates the hot water to the desired temperature.

On farms, for example, the JRGUMAT thermostatic mixing valve regulates the water temperature of drinking troughs for livestock or during feed preparation.

A Relief Valve is a pressure relief device that is spring-loaded and features gradual opening and closing. They are actuated by the upstream pressure and are best used with incompressible fluids. There are two types of relief valves: adjustable and electronic. Adjustable relief valves allow pressure setting changes via the outlet port. Electronic relief valves are capable of zero leakage using electric controls that observe and regulate system pressure. These types of relief valves are commonly used in close discharge systems.

With the JRGUMAT thermostatic mixing valve from GF Piping Systems, mixed water with a constant temperature can be ensured in an energy-efficient manner - wherever this is desired or required. It is used in different system sizes and applications. The JRGUMAT thermostatic mixing valve is extremely durable and has proven its worth for decades.

Going into further detail with the types of safety relief valves, there are five main types of pressure relief valves that are commonly seen. The main types of safety relief valves are:

Safetyvalve

The thermostatic mixing valve works without outside energy. When integrated into a circulation system, the amount of hot water needed to cover heat losses is fed back into the storage tank or hot water generator. The rest is fed directly into the mixer.

Anderson & Forrester provides a conversion chart to guarantee an easier experience in finding the correct product to fit your needs.

The housing of the JRGUMAT thermostatic mixing valve is made of low-lead gunmetal. This alloy complies with the current EU lead limits and may be installed without hesitation until 2036 and used afterwards. Click here for more information on the conversion of the product range to lead-free materials.

JRGUMAT 3400 thermostatic mixing valves are currently available with factory-set standard temperatures (25/40/48/55°C). The individual settings range from a minimum of 20°C to a maximum of 65°C. Other types covering additional temperature ranges are available. It is possible to change the blended water temperature setting within the specified setting ranges of the respective thermostatic mixing valve.

In comparison to relief valves and safety valves, a safety relief valve can be used for either liquid or gas pressure relief depending on the application. This is because safety relief valves are capable of both rapid and gradual opening.

Pressurevalve

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A balanced spring-loaded valve features a system to protect the bonnet, spring, and guide from the released fluids and additionally reduces the effects of backpressure. The disc area that is vented to the atmosphere is precisely equal to the disc area exposed to backpressure. These types of safety relief valves can be used in corrosive or dirty service and with variable backpressure.

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Checkvalve

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Excessively hot water can scald the skin. The maximum hot water temperatures at tapping points such as faucets or shower heads should therefore be limited. Because skin damage occurs within minutes at a water temperature of between just 45 and 51°C, within seconds at 51°C and above, and within a split second at over 70°C. In buildings with sensitive uses such as hospitals, care homes, schools and nurseries, but also within in hotels or apartments, the hot water can be set to a safe maximum temperature with the JRGUMAT thermostatic mixing valve.

An auxiliary pressure pilot works to control a pilot-operated valve. A pressure is produced that provides resistance force on the main valve’s piston while the process pressure through an orifice is occurring. The net seating force on the piston then increases as the process pressure gets closer to the set point.

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Thanks to their high control accuracy, JRGUMAT thermostatic mixing valves can be used for special applications, as regulating elements for maintaining temperatures or for processes requiring a constant water temperature. Wherever hands are not free to individually adjust the water temperature via a mixer tap, blended water set to the desired temperature comes in handy.

A pressure relief valve then closes over once the correct pressure level is reached to continue the regular function. These are essential to your system as overpressure could have dangerous consequences if not managed effectively.

The temperature of the supplied hot water must be at least 5K above the desired blended water temperature for the JRGUMAT thermostatic mixing valve to function properly. Balanced hydraulic conditions at the hot and cold water inlet are crucial.

Pressurerelief valve

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When managing the pressure within your system, there is a vast range of specific valves that can help to control and reduce this pressure. With so many different methods of controlling system pressure, it can be useful to know about these in detail so you can choose the most applicable type of valve for your system. If you would like to know about the various types of pressure relief valves in further detail, continue reading this comprehensive guide from Fluid Controls.

The ability of power-actuated valves to open or close is controlled by a source of power such as electricity, steam or water. With these types of safety relief valves, pressure is then released to either the atmosphere or to a container at lower pressure.

Safety valves are for use with compressible fluids, such as vapours and gas. These are recognised by their quick opening and closing action. Safety valves are commonly used in steam plants for boiler overpressure protection.

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The types of pressure relief valves can be classified into the following three categories, all with specific intended applications:

The installation instructions must be followed to ensure trouble-free function of the JRGUMAT thermostatic mixing valves. The local standards and guidelines must be observed

The bonnet, spring and guide in a conventional spring-loaded valve are exposed to the released fluids. If the bonnet is vented out to the atmosphere, relief-system backpressure decreases the specified pressure. If the bonnet is vented internally to the outlet, relief-system backpressure increases the set pressure. Due to its design, the conventional spring-loaded valve is used in noncorrosive services and also where backpressure is less than 10% of the set point.