FAQs of Mixing Tank

1. How does the mixing tank for the heating system work?

The mixing tank works by bringing hot water from the boiler together with cooler return water from the heating system. Inside the tank, the water flows and mixes through its internal mixing structure or simple stirring action. This helps keep the outlet water close to the set temperature, instead of sending water that is too hot directly into the system.

At the same time, the tank provides extra volume for the system, which helps smooth out water flow and pressure changes. This reduces the frequency of starts and stops of the boiler and other heat source equipment. As a result, the heating terminals receive more stable water temperature, energy use is improved, and the system components last longer in daily operation.

From HEAT EXCHANGE AND TRANSFER, INC.

2.  What is the difference between a heating mixing tank and an ordinary mixing tank?

The Heating Mixing Tank is a key component made just for heating systems. In any heating system, steady water temperature directly affects how efficiently the system runs, how comfortable it is to use, and even how long the boiler lasts.

When in use, the Heating Mixing Tank fully blends the high-temperature hot water from the boiler with the low-temperature return water in the system loop. It then sends water with a much more stable temperature back into the heating system. The insulation layer on the outside of the tank cuts down heat loss effectively, lowering the system’s overall heat consumption.

The General Mixing Tank is designed for an entirely different purpose. It’s mainly used in industrial settings like chemical and food processing, for stirring and homogenizing materials. Its focus is on mixing efficiency and stirring effect—not on controlling water temperature, managing heat, or balancing the system’s hydraulics.

3. Are mixing tanks pressure tested before shipment?

Every Plumberstar Mixing Tank goes through a 100% full-pressure test before leaving the factory. This makes sure the product runs stably for the long haul under real working conditions.

We use clean water as the test medium. The test pressure is 1.5 times the tank’s rated working pressure, and we hold it for at least 30 minutes. During the test, our quality inspectors check the tank’s welds, flange connections, water inlets and outlets, manholes, and all sealed parts in real time. Only when there’s no leakage, no deformation, and no pressure drop is the pressure test passed.

The whole pressure test process is fully recorded. The records include test pressure, pressure holding time, test results, inspectors, inspection date, and other key details, and a formal pressure test report is made. Each report is paired one-to-one with the product number and archived forever. You can request the pressure test report for any batch or individual product as needed—it’s an important basis for equipment acceptance and later operation and maintenance.

4. What accessories are included in the FOB quotation for mixing tanks?

The FOB price includes a drain valve, an air vent, mounting brackets, flanges, sealing gaskets, an insulation box, and basic fittings.

The price also includes export packing, simple instructions, and inspection documents. Transport to the port and export customs work are included. Sea insurance and import customs clearance at the destination are not included and are paid by the buyer.

5. Can large mixing tank orders support batch delivery?

Plumberstar supports split delivery for large orders of heating mixing tanks. The delivery plan can be discussed when the order is placed. This includes the number of tanks shipped each time and the corresponding delivery dates, based on the project schedule and available storage space.

We prepare production, conduct quality checks, and handle export work according to the agreed-upon plan. Each shipment is dealt with separately. There is no additional charge for split delivery, and all shipping documents are provided for each batch to facilitate easier order management.

6. Can the inlet and outlet directions of the mixing tank be customized?

Plumberstar is a professional valve custom factory. We can flexibly customize the inlet and outlet directions of heating mixing tanks based on your project needs, fitting different on-site piping layouts and installation conditions perfectly.

To make sure the product matches your system accurately, you need to provide clear system drawings when placing an order. Or just clearly mark the positions and dimensions of the inlets and outlets. We can arrange the interfaces as needed—on the same side, opposite sides, or in vertical positions.

These adjustments are simple to make. We just change the tank’s opening positions or use custom pipe fittings. The tank’s internal mixing structure and performance parameters stay the same, with no impact on product performance at all. And we don’t charge any extra design fees for this inlet and outlet direction customization.

7. Why should distributors choose Plumberstar mixing tank solutions?

1. Factory Direct Pricing: No middleman markups—we offer exclusive factory prices directly to distributors. Our pricing system is fully transparent, with ample profit margins built in for your channel. We also support tiered pricing for bulk orders. Compared to other distributed products on the market with the same specs and quality, our prices have a clear competitive edge, helping you close terminal deals more easily.
2. Low Inventory Threshold, Flexible Stocking: No mandatory high inventory requirements. We support small-batch replenishments and mixed-model shipments. In-stock standard models ship within 1–3 working days; bulk custom orders are scheduled for production and delivery in 7–15 working days. You can stock up flexibly based on actual sales volume, reducing capital utilization and inventory overstock risks, and making your channel operations lighter and more efficient.
3. Free Marketing Materials & OEM Branding Support: We provide a full set of marketing materials for free, including product brochures, technical manuals, spec sheets, and on-site installation diagrams. We also support OEM branding services for distributors—such as tank engraving and custom packaging—to help you build your own exclusive branded products, boost channel recognition, and end-customer trust.
4. Professional Technical Support Team, Easier Technical Sales: We have a dedicated professional technical support team to provide you with product selection guidance, technical Q&A, and installation scheme design support. When your end customers have complex working conditions or custom needs, our factory technicians can communicate with them directly. We’ll help you complete technical explanations and scheme confirmation, raising your negotiation success rate and lowering the barrier for technical sales.

8. How do you lower procurement risks of the mixing tank for overseas buyers?

We help overseas buyers lower purchasing risk in a few simple and practical ways: these cover product documents, quality checks, shipping, and after-sales service.

1. First, we provide the necessary certificates and documents for the mixing tanks. This helps buyers make sure the products meet local rules and safety standards.
2. Second, buyers can check samples before production and follow the production process through photos, videos, or third-party inspections. This makes the product quality easier to see and understand.
3. Third, we work with trusted logistics partners to arrange international shipping. The steps from the factory to the port are clearly agreed in advance. Shipping insurance is arranged to reduce the risk of loss or damage.
4. Finally, we support overseas customers with after-sales service through local partners and remote technical help. During the warranty period, parts replacement and basic service are provided as agreed in the order.