20mm BSP Threaded, Maximum Inlet Pressure of 5kPa. Suits: Professional Series Cooktops, Griddles, Chargrills, Oven, Salamander, ...

When the water volume increases with nowhere to go, an expansion tank allows excess water to enter the pre-pressurized tank. As the temperature and pressure reaches its maximum, the diaphragm flexes against an air cushion to allow for increased water expansion, because unlike water, air is compressible. When the system is opened again or the water cools, water leaves the tank and returns to the system.

Both the International Plumbing Code (IPC) and Uniform Plumbing Code (UPC) require thermal expansion control to be addressed in plumbing systems. A temperature and pressure (T&P) relief valve is not considered a thermal expansion device. This is because when water is allowed to continuously drip from the T&P relief valve, minerals from the water can build up on the valve, eventually blocking it. This blockage can render the T&P valve useless and potentially lead to hot water heater explosions.

Steam pressurereducing valve working principle

The 403 piston-actuated pressure regulating are pilot-operated, piston-actuated, pressure regulators primarily used for reducing pressure in STEAM systems. These regulators can be equipped with an optional internal sensing line which simplifies installation (Suffix I). The 403 Series has all stainless steel internals for high-pressure applications up to 450 PSIG. Double Spring Option is available for wider range of reduced pressures.

The 403 piston-actuated pressure regulating valves contain a separate pilot valve which is mounted on top of the main valve. The valve senses the downstream pressure (low pressure side) and precisely modulates a small amount of steam from the upstream side (high pressure side) to the top of the piston chamber, which in turn controls the opening of the main valve. When steam demand increases and downstream pressure starts to drop, the valve is opened further, allowing for additional flow. These regulators have increased accuracy and consistency of set pressure when compared to the Direct-operated type. Set pressure is more stable and will only vary a few percent over the full flow range.

Our potable water expansion tanks are designed to absorb the increased volume of water created by thermal expansion and maintain a balanced pressure throughout the potable water supply system. They are used to prevent plumbing system and/or water heater damage as well as unnecessary relief valve discharge caused by excessive pressure from thermal expansion.

From the Capacity chart, find the inlet pressure and required regulator outlet pressure. Follow across chart to nearest capacity (steam) that meets or slightly exceeds demand requirements. Follow vertically up to determine appropriate size. When exact application values are not shown, interpolate between values. From the spring range chart, select the spring range that accommodates the required outlet set pressure.

When water is heated, its density decreases and volume expands. Because water is not compressible, the extra volume created by expansion needs somewhere to go. During no-flow periods in a system, pressure reducing valves, backflow preventers, and other one-way valves are closed, thus eliminating a path for expanded water to flow back to the system supply. That is when system pressure increases, causing a number of undesirable and potentially dangerous problems.

Water Containment solutions allow for thermal expansion while containing thermally expanded water in the plumbing system. Our full line of thermal expansion tanks are considered water containment devices, requiring no installation of discharge lines or drains.

Steam RegulatorValve

Radiant offer a range of under tile or in screed under floor heating kits which are suitable for bathrooms and living areas. Use our calculator to work out ...

For reducing pressure in high pressure application, you can use a High Pressure Control Valve package set up for pressure reducing application. In this ...

When the water volume increases with nowhere to go, an expansion tank allows excess water to enter the pre-pressurized tank. As the temperature and pressure reaches its maximum, the diaphragm flexes against an air cushion to allow for increased water expansion, because unlike water, air is compressible. When the system is opened again or the water cools, water leaves the tank and returns to the system.

Our potable water expansion tanks are designed to absorb the increased volume of water created by thermal expansion and maintain a balanced pressure throughout the potable water supply system. They are used to prevent plumbing system and/or water heater damage as well as unnecessary relief valve discharge caused by excessive pressure from thermal expansion.

Water Relief solutions discharge thermally expanded water at a pressure setting that is below the setting of the water heater's temperature and pressure relief valve. We offer variety of water relief solutions that can be installed on the system piping, in a water closet, or on an outside faucet. These products must be piped to a suitable drain or discharge location.

When water is heated, its density decreases and volume expands. Because water is not compressible, the extra volume created by expansion needs somewhere to go. During no-flow periods in a system, pressure reducing valves, backflow preventers, and other one-way valves are closed, thus eliminating a path for expanded water to flow back to the system supply. That is when system pressure increases, causing a number of undesirable and potentially dangerous problems.

PressureReducing Valve

Continuous flow or instantaneous systems heat only the water required and do not use a storage tank, so do not suffer the same amount of heat or energy losses ...

Steam: The 403 Series pilot-operated (piston-actuated) pressure regulating valves are used for pressure reduction on steam mains and other process equipment. Piston-actuated regulators are more compact than Diaphragm-actuated regulators. The 403 Series has a Ductile Iron body but contains all stainless steel internals for high-pressure applications up to 450 PSIG. Size Connection PMO (PSIG) Max Capacity 1/2" - 4" NPT, FLG(150,300) 20-450 Steam - 83,300 lbs/hr.

The automatic water feed valve reduces the incoming water pressure from the building supply side down to (typically) 12 psi. That's because the normal in-boiler ...

Hammer arresters absorb sudden pressure changes to keep the pipes from banging, providing continuous and maintenance-free protection against water hammer.

We offer several alternatives for pressure relief. While unlike an expansion tank such products do not prevent against loss of water, they do limit high pressure and prevent issues associated with thermal expansion.

Steam regulatoradjustment

Both the International Plumbing Code (IPC) and Uniform Plumbing Code (UPC) require thermal expansion control to be addressed in plumbing systems. A temperature and pressure (T&P) relief valve is not considered a thermal expansion device. This is because when water is allowed to continuously drip from the T&P relief valve, minerals from the water can build up on the valve, eventually blocking it. This blockage can render the T&P valve useless and potentially lead to hot water heater explosions.

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Pressure Reducing Station with Internal Sensing Line Internal Sensing Option (Specially drilled internal sensing path eliminates the need for an external sensing line)

Internal Sensing option (if requested , the regulator can be modified to internally sense pressure , eliminating the need for an external sensing line

Use the 403 Series Spring Selection Table to specify the proper spring(s) based on valve size and reduced pressure range by Replacing the "X" with Spring Code from chart.

SpenceSteam regulator

Series LF25AUB-Z3 Lead Free* Water Pressure Reducing Valves are used in commercial and residential applications to reduce incoming water pressure for ...

Both inline strainers obtain their name from the shape (how the basket element fits within the chamber) and drain port location. However, as both in-line ...

Our non-potable water expansion tanks are designed to absorb the increased volume of water caused by thermal expansion and maintain a balanced pressure throughout the a water heating system. They are used to prevent system damage and unnecessary relief valve discharge caused by excessive pressure from thermal expansion.

Our non-potable water expansion tanks are designed to absorb the increased volume of water caused by thermal expansion and maintain a balanced pressure throughout the a water heating system. They are used to prevent system damage and unnecessary relief valve discharge caused by excessive pressure from thermal expansion.