Buffer tank
Tianmiao Buffer Tanks offer stable pressure regulation and energy storage, ensuring highly efficient flow stabilization and pressure equilibrium across all operating conditions. With 100% non-destructive testing performed on all welds, we guarantee leak-free operation. The tank body features a seamless, one-piece molded design, ensuring exceptional pressure resistance and durability; furthermore, it minimizes the frequency of pump and valve cycling, thereby conserving energy and reducing system wear. Volume, material, and connection ports can be fully customized to meet specific requirements, making the tanks compatible with a wide range of media—including water, air, and oil—and suitable for universal application across HVAC, chemical processing, and oil and gas industries.
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Across numerous industrial sectors—including petrochemicals, power generation and heating, HVAC, pharmaceuticals and food processing, metallurgy and environmental protection, as well as district heating—fluid pipeline networks frequently encounter operational challenges such as pressure fluctuations, sudden flow surges, water hammer shocks, and airflow oscillations. Conventional buffer tanks are often generic, off-the-shelf products characterized by simplistic designs, low pressure ratings, mediocre materials and welding techniques, and poor corrosion resistance. Prolonged use of such equipment can lead to system imbalances, instrument malfunctions, pipeline resonance, and even media leakage, thereby increasing operational and maintenance costs as well as the risk of unplanned downtime.
Tianmiao Chemical Machinery specializes in the R&D and manufacturing of pressure vessels. We offer customized, non-standard buffer tanks tailored to specific real-world operating conditions. Our solutions feature comprehensive upgrades—ranging from structural design, material selection, and internal flow path optimization to precision welding—providing fluid systems with an integrated solution for pressure stabilization, buffering, and flow regulation.
Tianmiao buffer tanks are available in both vertical and horizontal configurations. Each unit consists of a shell, elliptical heads, saddle supports or legs, nozzles, manholes, and safety accessories, offering exceptional structural rigidity and reliable pressure-bearing capabilities. Available materials include Q345R carbon steel, 304/316L stainless steel, titanium, and duplex stainless steel. Carbon steel interiors can be lined with rubber or PTFE (Teflon), or treated with anti-corrosion coatings; stainless steel interiors can undergo electrolytic polishing to prevent residue accumulation. The tanks feature a volume range of 0.1 to 100 m³, a design pressure range of 0.6 to 16 MPa, and a design temperature range of -20°C to 450°C. Tank dimensions, nozzle orientations, and interface specifications can all be fully customized to meet specific operational requirements.
Our manufacturing process utilizes CNC machining for precision plate cutting and rolling. Welds are executed using a combination of TIG welding for root passes and submerged arc welding for cover passes, strictly adhering to rigorous welding procedure specifications. All pressure-bearing welds undergo 100% non-destructive testing (RT/UT) to ensure zero defects. Internal components—such as buffer baffles, foam-breaking screens, and flow-guiding structures—can be installed to effectively stabilize flow, dampen vibrations, and mitigate water hammer effects. Flange interfaces are precision-machined to ensure compatibility with both Chinese (GB) and American (ASME) standards, guaranteeing a leak-free, long-term seal. This equipment integrates four key functions—pressure stabilization, energy storage, vibration damping, and gas-liquid separation—making it widely applicable across diverse sectors such as petrochemicals, power generation, HVAC, pharmaceuticals, food processing, metallurgy, building materials, environmental protection, and district heating. It effectively achieves pipeline network pressure stabilization, eliminates water hammer, buffers material flow, and balances system loads.
The product supports comprehensive, fully customized non-standard configurations. Optional features include thermal insulation jackets, liquid level and pressure instrumentation, safety valves, drain valves, and remote monitoring interfaces. External surfaces can be treated with anti-corrosion coatings and thermal insulation cladding; support structures are available in fixed or sliding configurations to effectively absorb thermal expansion displacements, thereby safeguarding both the equipment and the pipeline network.
Tianmiao holds the Class A2 Pressure Vessel Manufacturing License and strictly adheres to GB 150, TSG 21, and HG/T 20584 standards. Primary materials are sourced exclusively from major, reputable steel mills and undergo rigorous incoming inspection, including spectral analysis and mechanical property spot-checks. Upon completion, every unit undergoes a hydrostatic test at 1.5 times its design pressure to verify pressure retention and leak-tightness; units intended for flammable or toxic media undergo additional pneumatic leak testing. Each unit is delivered with a Certificate of Conformity, Quality Certificate, As-Built Drawings, Non-Destructive Testing (NDT) reports, and pressure test records, ensuring full quality traceability throughout the entire process.
Regarding operation and maintenance, the equipment comes standard with a maintenance manhole. Internal buffering and flow-guiding components are designed to be detachable and replaceable without requiring the complete disassembly of the vessel, thereby minimizing downtime and reducing maintenance costs.
Tianmiao provides comprehensive, one-stop services spanning the entire product lifecycle. Users simply provide details regarding the medium type, temperature and pressure parameters, required volume, flow rate, and site conditions; our technical team then provides complimentary services covering process calculations, solution design, 3D modeling, and construction drawings. Our subsequent services encompass manufacturing, quality inspection, logistics, installation guidance, commissioning, and lifetime after-sales support.
Whether for new construction projects, equipment replacements, energy-saving retrofits, or specialized requirements involving high temperatures, high pressures, highly corrosive media, or large volumes, Tianmiao buffer tanks can be custom-engineered to deliver safe, stable, energy-efficient, and easily installable holistic solutions. We invite you to contact the Tianmiao engineering team for technical specifications, product selection assistance, and price quotations.
Buffer Tank Parameter Table
Parameter | Value & Specification |
Type | Vertical / Horizontal Buffer Tank (Pressure Vessel) |
Design Code | ASME VIII Div.1, GB 150, ISO 9001 |
Volume Range | 50 L – 20000 L, fully customizable |
Installation Type | Vertical with legs / Horizontal with saddles |
Application Scope | Water, HVAC system, oil, gas and various process fluid buffering |
Design Pressure | Standard: 6 bar / 10 bar; Optional: Max 20 bar |
Max Working Pressure | Standard: 6 bar (0.6 MPa); Optional: 10 bar / 16 bar |
Design Temperature | Standard: -20℃ ~ 110℃; Optional: -40℃ ~ 200℃ |
Hydrostatic Test Pressure | Standard: 1.5 times design pressure; Optional: 2.0 times design pressure |
Applicable Medium | Standard: water, glycol, oil, neutral gas; Optional: custom industrial process fluid |
Shell & Head Material | Standard: S235JR / Q345R carbon steel; Optional: SUS304, SUS316L stainless steel |
Nozzle Material | Standard: carbon steel; Optional: stainless steel |