ASME Pressure Vessels
ASME pressure vessels set the standard for safe and effective operation for receptacles required to operate under changing pressure and temperature conditions. Our ASME (American Society of Mechanical Engineers) certified vessels are constructed to ASME Code, Section VIII, Division I standards and are welded according to Section IX standards or other industry standards depending on the the application.
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Hydropneumatic Tanks are ASME certified filter vessels to contain air and water under pressure. These vessels use the pressurized air as a buffer or cushion in water pumping systems to absorb water hammer shocks caused due to sudden changes in water pressure from pump starts or stops. The tanks are also used in well water and fire protection systems.
The ASME pressure vessel is typically horizontal and is constructed with 2,000 gallon (7,571 L) capacity or higher. A small air compressor may be used to replace air absorbed by the water in the tank. Epoxy or polyurethane will be used for the tank lining and the coating will be selected based upon requirements for above or underground installation.
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Fire Protection Tanks
Specifically designed for use in private fire protection applications, these hydropneumatic tanks are a code requirement for automatic sprinkler systems in commercial, industrial and institutional buildings. In addition to ASME certified construction, the tank also meets NFPA (National Fire Protection Association) standards for design, fabrication, testing and inspection.
Available for above or underground installation with internal and external coatings suited to the tank application and location. The ASME pressure vessel is typically filled to two/thirds capacity with water and then air pressurized to 125 psi.
Fire Protection storage tanks are also available in an atmospheric (non-pressurized ) style.
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Chlorine Contact Tanks
Chlorine disinfection is the most common sanitation process used by public and private water systems for potable, or drinking, water. This method of sanitation is accomplished bringing water in contact with chlorine for at least thirty minutes.
Chlorine Contact Tanks are typically used with a chlorine injection system in a well water application. Our Chlorine Contact Filter Vessel utilizes a series of internal baffles to lengthen the path the water travels through the tank. This method ensures sufficient contact time between the water and chlorine and provides optimal use of chemicals over time.
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Granite Environmental Technical Team at +1-772-646-0597to discuss your water filtration needs
Boiler Blowdown Tanks
Boiler maintenance programs require that water be removed from the boiler at regular intervals to ensure that impurities and chemicals dissolved in the water are removed from the system. This process is referred to as "boiler blowdown."
An integral part of the blowdown system, the boiler blowdown tank allows for impurities to be filtered out, and can allow for high-pressure water to be be safely flashed to steam. The steam can then be routed back to the boiler through a Flash Tank and Heat Exchanger combination and the remaining water can be discharged once it has been cooled.Standard Features:
- Shell and Head: 3/8" (10mm) minimum thickness
- Tank Vent (sized for application or applicable code)
- 12 x 16 inch (30 x 41 cm) elliptical manway (minimum)
- Bottom overflow drain outlet with siphon breaker
- Cleanout drain: 2" (5 cm) NPT at the bottom of the tank (minimum
Our Boiler Blowdown Tanks are certified for ASME pressure vessel Code for 25% working pressure of the maximum working pressure of the boiler.
If a thicker shell is required please contact our Granite Environmental Technical Team for more information regarding your application at: +1772.646.0579 or request a quote
Flash Tanks are used in a blowdown waste heat recovery system to take advantage of energy that would otherwise be lost during a boiler blowdown.
The liquid temperature from a boiler blowdown is typically about the same temperature as the steam produced, which can be 220 degrees or higher. If the heated water is then discharged, the water must be cooled prior to releasing it into a sewer or drainage system and the energy used to heat the water is lost.
A portion of that energy can be recovered by rerouting discharged water into a Flash Tank. The tank allows for a portion of the water to be converted to steam, which can then be used in a deareator to heat the feedwater. The remaining waste water can be used in a heat exchanger to preheat the boiler's makeup water and reduce the exit temperature of the discharge to an acceptable level.Standard Features
- Tangential Blowdown Inlet with Wear Plate
- Tank Vent (sized for application or in compliance with local codes)
- Bottom Drain Outlet
- Pressure Gauge Connection
- Safety Relief Valve Connection
Optional Tank Support Systems are also available.
All Flash Tanks are built to ASME Code. The standard design is 150 psi. Other pressure ratings are available upon request.
Please contact our Granite Environmental Technical Team to request a quote or for more information regarding your application: +1-772-646-0597
Air Receiver Tanks
Air Receiver Tanks are compressed air storage tanks in an air compressor system. They are used to provide compressed air when short-term demand exceeds air supply from the compressor.
The receiver tank can also be used to remove moisture and oil from the system through the blow-off drain in the bottom of the tank.
Our Air Receiver Tanks are sized according to the air compressor application and operation. Generally, one gallon of storage is used for each Actual Cubic Foot per Minute (ACFM) for the compressor rated output.
For more exact sizing, use the below formula:
V = Cr x (Ci/Co
V = Air Receiver Volume (ft3)
Cr = Compressor Volume (ft3)
Ci = Compressor Inlet Free Air
Co = Compressor Outlet Pressure
Once the capacity is calculated, inlets and outlets can be sized according to the needed compressor outlet connection.
Air Receiver Tanks are built to ASME pressure vessel code. Standard pressures are 125 and 150 psi. Other pressure ratings are available upon request.
Please contact our GEI Works Technical Team to
request a quote or for more information regarding your application call: +1-772-646-0597
Thermal Expansion Tanks
Thermal Expansion Tanks are pressure regulation vessels designed to contain the thermal expansion and contraction of water in a heating system.
These ASME pressure vessels should be installed at the highest point in the system and will include all necessary openings for controls, valves and gauges.
Contact our Granite Environmental Technical Team to request a quote or for more information regarding your application call: +1-772-646-0597
Filter Vessels are used in water and waste water treatment systems for removal of suspended solids or contaminants that may be dissolved in the water.
Custom built Filter Vessels will be skid-mounted, and include filters, pumps, motors, controls, valves, piping, wiring and the required granular filter medium of sand, activated carbon, organoclay or other special material as required by the application.
These vessels are built to ASME pressure vessel code as required. Non-code filter vessel construction is also available.
Contact our Granite Environmental Technical Team to request a quote or for more information regarding your ASME pressure vessel application call: +1-772-646-0597.